Supersocies GEH -2762A INSTRUCTIONS DS-50 AND DS-60 SERIES POLYPHASE SWITCHBOARD WATTHOUR METERS
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ft y 1 GENERAL ELECTRIC CONTENTS Page i INTRODUCTION 3
INSTALLATION 3 SEALING THE METER 4 INSTRUMENT TRANSFORMERS 4 READING THE REGISTER 4 FIGURING REGISTER RATIOS 5 < TESTING 5 Watthour Constant 6 5 i CALIBRATING ADJUSTMENTS . . . 6 Full Load . , . 6 Light Load 7 Inductive Load (Power Factor) . 7 Torque Balance (Phase Balance) 7 MAINTENANCE 7 Magnetic Suspension System (2-stator Meters) . . . . 7 Magnetic Suspension System (3- and 4-stator Meters) 8 Mechanical Bearings (3- and 4 -stator Meters) . . . . 10 Register . . .' 11 Stator 11 INSTALLING DEMAND REGISTER 11 i
PULSE DEVICES . . • * * * 13 POTENTIAL INDICATING LAMPS 13 DETENT 13 CONNECTIONS 13 LIST OF OTHER PUBLICATIONS 14 CONNECTION DIAGRAMS 15-18 * 1 FIELD TESTING CONNECTIONS 19 24 * - DIMENSION DIAGRAMS 25-28 I
NOTICE OF CHANGES: This issue of GEH -2762B is a complete revision of the previous issue of GEH -2762A. ,!
These instructions do no/ purport to cover all details or verr/afions in equipment nor to provide for every possible contingency fo be mot In connection with Installation, operation or maintenance, The equipment covered by these operating instructions should be operated and serviced only by competent technicians familiar with good safety practices, and those instructions are written for such personne/ and are not intended as a substitute for adequate training and I experience in sofe procedures for this typo of equipment Should further information be desired or should particular problems arise which are i . not covered sufficiently for the purchaser 's purposes, the mailer shou /d be referred to the Genera / Electric Company.
H m DS-50 AND DS-60 SERIES POLYPHASE SWITCHBOARD WATTHOUR METERS
INTRODUCTION Similarly, the letter “W” in the type designation denotes a watthour meter with a contact device or These instructions apply to General Electric two-, pulse generator (Type D-20-V, D-30-V, D-41 or three- and four-stator, transformer-rated, poly- D-51); for example: DSW-65. phase switchboard meters on the following types: INSTALLATION TYPE NO, METER CIRCUIT APPLICATION STATORS DS-60 series meters have drawout construction with a universal case designed for either surface or should be mounted DS 53, 63 2 wire; single phase 2 semi-flush mounting. The case - - unit is in 3-wire network 2 and wired permanently before the meter - 3 wire; 1 , 2 , or 3-phase 2 serted. The meter unit is installed by aligning the - - - cradle with the guides in the case and sliding it into top DS-54, 64 4 wirey; 3-phase 3 place. The cradle is locked in the case with the - and bottom latches. (See Figs. 5 and 7.) The con- , completing the elec , DS 55, 65 4 wire Y; 3-phase 2 necting plug is next inserted - - - trie circuits through the meter. The cover is then four thumb screws. DS-66 4-wire delta; 3-phase 2 secured to the case with DS- 67 2 circuit, 3-wire; 3-phase 4 The DS-50 types have direct-wired connections - between the terminal block and the meter; there- types can DS 69 2 circuit, 4-wire Y; 3-phase 4 fore, they are installed as a unit. These - - be surface or semi-flush mounted the same as the DS-60 meters. All internal wiring has sufficient The DS 60 family of meters features a V frame length to permit a partial withdrawal of the meter - - for inspection, testing or adjustment. construction with two stators and a single-disk from the case rotor or three and four stators and a double-disk The meter unit is withdrawn by first unlocking the rotor. top and bottom latches, then grasping the latches, on in each hand, and carefully pulling out the meter At General Electric's DS-50 family of switchboard until the top strap prevents any further travel. watthour meters is derived from the DS 60 family this point, the lower part of the meter is moved - into a design and therefore the meter and meter charac- outward off the bottom skids and lowered are identical, and the size and appearance locked position. The meter is now plumb with the teristics To of the case as well as the provisions for mounting case and may be operated and adjusted. return grasp the are the same. Basically, the difference is in the the meter to the fully recessed position, for testing the meter The DS 50 series latches, one in each hand, and raise the meter until provisions . - fully re does not have the built in test switch facility of the it can be pushed back into the case. When - - , lock the upper and lower latches DS-60 line. These DS-50 meters are designed to be cessed in the case used where a separate test switch is desired, o.r, in and replace the cover. some applications, where no test switch is required. Both the meter and cradle of the DS-50 types may The DS-50 and -60 series meters are rated be entirely removed from the case during installa- 10 and 20, and they havefull load nameplate tion, servicing, conversion, or maintenance. This Classes - that ratings (test amperes) of 2.5 and 5.0, respectively. is accomplished by removing the two screws block to the case. Withdraw both When used with potential transformers, these me- fasten the terminal are rated at 120 volts; however, they are avail the meter and the terminal block from the case. De- ters - that it able in ratings up to 600 volts when only current press the strap at the top of the meter so transformers are to be used. disengages the post in the top cover while the meter is withdrawn. The letter “ M ** in the type designation denotes demand meter with mechanical demand When a meter is mounted semi flush, the mount a watthour - panel- register (Type M-30, M 31, or M 51); for example: ing screws are inserted from the back of the - - on the mounting flange. The DSM-65, into threaded bosses 3 GEH-2762B D$~5Q and DS ~60 Series Polyphase Switchboard Watthour Meters screws and bosses are hidden from view by the connection with lightning arresters should be fol- meter cover. Hardware for any type of mounting lowed. % (semi-flush, surface, metal or insulating panel ) and either type of connection (threaded studs with WARNING: UNDER NO CONDITIONS nuts and flat washers, or washer-head screw with SHOULD THE CURRENT CIRCUIT OF prong washer) accompanies each meter. All drill- A TRANSFORMER -RATED METER BE on - ing, , wiring, and hammering should be completed OPENED WITHOUT FIRST SHORT CIR - the switchboard before a meter is installed. See CUITING THE SECONDARY WINDING Figs. 28 and 30 for 2 ~stato.r switchboard drilling OF THE CURRENT TRANSFORMER . and Figs. 29 and 31 for 3- and 4-stator switchboard drilling. Removal of the connecting plug in drawout-type DS-60 meters automatically short-circuits the cur- Make the external connections to the case termi- rent terminals so that the meter unit can safely be nals as indicated in the proper diagram included in removed from the case. « this manual. See Figs. 9 through 21. ( For external connections of contact devices, refer to the instruc- NOTE: Every circuit in the drawout case tion book covering the type of device being used.) has an auxiliary, brush. See Fig. 1 . It is especially important on current circuits All meters are tested before shipment. They re- and other circuits with shorting bars that quire only mounting, connecting, and sealing before these auxiliary brushes engage the con- being placed in operation. No shipping device is necting plug or test plug before the main necessary on 2-stator meters. brushes do . This willprevent CT second - ary circuits from being opened . Adjust the brushes if necessary . On 3- and 4-stator meters, a shipping wedge is used to hold the rotor assembly during shipment. Before placing the meter in service, remove the CONNECTING PLUG MAIN BRUSH CONNECTING BLOCK shipping wedge. No adjustment of the bearings is necessary. M, ( SEALING THE METER * * The screws that hold the cover in position have knurled heads to permit tightening with the fingers. They are also slotted to take standard types of AUXILIARY BRUSH TERMINAL BLOCK sealing devices. NOTE: AFTER ENGAGING AUXILIARY BRUSH, CONNECTING PLUG TRAVELS 1 /4 INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK . INSTRUMENT TRANSFORMERS Fig. 1 . Cross section of drawout case showing position Both current and potential transformers have of auxiliary brush polarity markings of white paint, or markers (Hj for primary, X for secondary) located on or near one primary and^ one secondary terminal. These markings denote relative polarity of the winding and indicate that the instantaneous direction of currents READING THE REGISTER in the is the ; namely, toward the trans 4 leads same - The can be supplied with either 4 dial or in the marked primary lead and from the meters - former 5 dial pointer type registers or with 4 digit, in the secondary lead, or vice versa - - - transformer . registers The register can be either polarity markings are shown in the connection cyclometer . The secondary reading or * 'primary reading, * diagrams. In order to obtain the correct direction “ - ” - ’ of of the watthour meter rotor, these mark rotation - Secondary reading registers have high register ings must be followed, regardless of their physical ratios to read- the energy in the transformer sec location on the transformers - . ondary circuit; consequently:
The meter enclosure should be connected to the 1. The actual reading of the secondary- reading grounded side of the secondary circuit of each trans- register must be multiplied by the proper constant former connected to the meter. No. 12 AWG copper (the ratio of primary energy to secondary energy) 4 wire is adequate for this purpose. At the ground to obtain kilowatt-hours in the primary circuit being end of the wire the usual precautions employed in metered. This constant is normally the product of 4 OS-50 and D5~60 Series Polyphase Switchboard Watthour Meters GEM-27628 the respective ratios of the current and potential Disk revolutions for 10 kilowatt-hours = transformers used with the meter. 1000 10 x 2, Meters with secondary- reading registers can Kh be used with transformers of any ratio without changing registers, since only the multiplier is For example, calculate the register ratio for a affected. 2.5-ampere, 120-volt, DS-63 meter. This meter has a Kh of 1.2 watthours per disk revolution.Therefore, Primary reading registers have register ratios - « (usually low) to read the energy in the transformer Disk revolutions for 10 kilowatt-hours primary circuit; i.e., they allow for the potential 1000 and current transformer ratios.; consequently: ' 3 10 x ~1 . 2 = 8333 1/ 1, Multipliers are usually in tens; i.e, 1 , 10 100, 1000 or higher. To get the register worm-gear revolutions for 10 kilowatt-hours, divide this figure by the gear 2. Changing transformer ratios normally re- reduction between the rotor shaft and the worm quires changing a primary-reading register ratio. gear. This reduction is the number of teeth on the worm gear (100) divided by the pitch of the worm on the rotor shaft (2) . Therefore, the first gear re- The watthour constant“ K t f * marked on the name- duction is 100/2 = 50, Dividing the disk revolutions plate is for use only in calibrating and checking the for 10 kilowatt-hours by 50 gives meter, and is not to be used in connection with the register reading. Worm-gear revolutions for 10 kilowatt-hours = type register, the posi 3 When reading the pointer- - 8333 1/ 166 2/3 tion of each pointer must be determinedaccurately. w - In deciding upon the reading of each pointer, the pointer before it (to the right) must be observed. Since this is the number of worm-gear revolu- Unless this pointer has reached or passed zero or, tions for one revolution of the first pointer, it is by in other words, completed a revolution, the pointer definition the register ratio, Rr. to its left has not completed the division upon which it may appear to rest. For this reason, the register Consolidating the above steps, can be read most easily and rapidly from right to 00 left. 10 * A °»h - 10,000 200 , the demand registers Register Ratio ~ ~ On watthour demand meters Rr = 100 50 the sweep hand or the cumulative Kh Kh may be either - 2 type. Refer to the applicable demand register in- - - structions (see list on page 14) for reading these The general formula for the register ratio, in- registers. cluding the dial-face multiplier, is therefore: 1, For secondary-reading registers: HGURING REGISTER RATIOS 200 is defined as the number R » - x dial-face multiplier The register ratio “Rr” —Kh of revolutions of the worm gear (which meshes with the rotor shaft) required to produce one revolution 2. For primary-reading registers: of the fastest ( right-hand) pointer. . 200 dial face ~ xr - Rr x CT ratio x PT ratio. multiplier For example, if the register is direct-reading, Kh i.e., has a multiplier of 1, then one revolution of the fastest pointer equals 10 kilowatt-hours. Now For further information on register ratios, re- determine how many disk revolutions equal 10 fer to publication GET-1887, kilowatt-hours: TESTING Disk revolutions for one kilowatt-hour ~ for testing and adjusting ) Detailed procedures 1000 (watthours per kilowatt-hour Electric a c watthour meters are given in ( per disk rev,) General - watthours publication GET-813, 5 GEH-2762B DS-50 and DS-60 Series Polyphase Switchboard Watthour Meters
The portable watthour-meter standards manu- with those already in use, a double -pitch worm is factured by the General Electric Company provide used on the rotor shaft so that, for the same rating m means for making the necessary field tests quickly of meter, the register ratio is unchanged from that and accurately, and independent of load variations. used on the older meters. Meter testing of the DS-60 series, either in the field or the meter test shop, is facilitated by using test plug Model 12XLA12A1. These connections are CALIBRATING ADJUSTMENTS shown in Figs. 22 through 27 with the test plug used in place of the meter connecting plug. Refer to In- The following adjustments are provided for cali- structions GEI-25372 for further information on test brating the meters for all Load conditions met in plug Model 12XLA12A1. normal service. All adjustments increase the meter speed when turned counterclockwise and decrease All DS-50 series are tested by using an external the speed when turned clockwise, as indicated on test switch as described in publication GET-813. the nameplate around the full-load adjustment screw. < See Fig. 2.
WATTHOUR CONSTANT FULL LOAD ? > The watthour constant “K marked on the Full-load adjustment is made by turning the mi- nameplate is the number of watthours^ per revolution crometer screw shown in Fig. 2. This screw has of the meter rotor. Two watthour constants are sufficient range for all normal requirements, in- shown; namely, “Test K” or “K ” for use when cluding adjustment of a replacement magnet, should testing the meter without transformers^ , and the this ever be necessary. This adjustment affects the “Primary Test or , “Primary as the over- meter calibration equally at all loads andpower fac- all constant for the meter with its transformers. tors. One turn of the screw will change the calibra- tion approximately 0.3 to 0.4 percent. To improve performance over the extended cur- rent and voltage ranges, rotor speed has been re- duced to one -half that of corresponding older meters. CAUTION: DURING THE ADJUSTMENT ., This results in a watthour constant twice that CLEANING , OR REPLACEMENT OF A previously applicable to a given rating of meter. RETARDING MAGNET , IT IS IMPOR - i However, in order that register ratios be consistent TANT NOT TO ALLOW ANY MAG - r, *
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INDUCTIVE LOAD ADJUSTMENT FULL LOAD ADJUSTMENT
TORQUE BALANCE {PHASE BALANCE) ADJUSTMENT i Fig . 2. Loccr /ion of adjustment screws, DS-50 and DS-60 series meters 6 DS-50 and DS-60 Series Polyphase Switchboard Waffhour Meters GBN-27&2B
NETIC OBJECT , SUCH AS A SCREW - If it becomes necessary to make any change in DRIVER BLADE OR MAGNETIC GAP this adjustment, as may be the case when installing CLEANER, TO COME INTO CONTACT a new stator, the two screws of each stator should WITH THE MAGNET POLE FACES BE - always be moved exactly the same number of turns CAUSE IT WILL POSSIBLY WEAKEN and hi the same direction. This will prevent exces- THE MAGNET . sive shift in light-load calibration. Turning the screws counterclockwise increases the torque NOTE: When replacing magnets in the (speed) of the stator. Sensitivity is about 0. 75 per- field, check Renewal Parts Bulletin GEE- cent per turn of the two screws. After balancing the 4139 for correct catalog number desig - torques of the stators, the accuracy of the meter nation for meter type. should be checked on full load, inductive load, and light load. LIGHT LOAD Light-load adjustment is made by moving the MAINTENANCE light-load plate sideways in the air gap of each stator with the adjusting screws provided.See Fig. 2. MAGNETIC SUSPENSION SYSTEM Since this adjustment introduces a fixed torque of a (2-stator Meters) magnitude depending on the amount the plate is magnetically suspended moved, the effect varies inversely with the load No maintenance of the 50 and 60 series meters should torque. For example, a 5.0 percent change at 1/10 rotor in the DS- - load current will cause approximately 0.5 per be required in normal service during the life of the rated - should any cent change in the same direction at rated load 1.0 meter. No lubrication is required nor power factor, and approximately 1.0 percent change be used. at rated load 0.5 power factor. The direction of ad- justment is the same as for full load; i.e., counter- Inspection to increase speed Sensitivity of this ad clockwise . - position is about 0.7 percent per turn when testing With the meter in its normal operating justment ): one stator at 20 percent rated load, or 1.4 percent inspection can be made as follows (see Fig. 3 per turn when both stators are energized at10 per- load and both adjusting screws are turned. cent CENTERING PIN r/ * ' NOTE: If the meter under test has a con /GUIDE BUSHING - OUTER tact device, the light-load check should SUSPENSION revolutions ( 4 to 6) of the MAGNET ' cover sufficient \ UPPER to average out variation in friction flTJjft) SUSPENSION rotor liljililur ^8ET SCR W position , * due to contact V INNER SUSPENSION INDUCTIVE LOAD (Power Factor) MAGNET Inductive-load adjustment is made by moving the lag plate radially with respect to the disk, into or out of the air gap on each stator with the adjusting screw provided. See Fig. 2. The direction of adjust- I ment is the same as for full load; i.e., counter- 1 clockwise to increase speed. Sensitivity is approxi- mately 0.5 percent per turn. Whenever the inductive-load adjustment is changed, both full-load and light-load calibrations should be checked, as they may be affected a small amount.
TORQUE BALANCE (Phase Balance) LOWER GUIDE SET SCREW torques / All stators in each meter have their \ ) equalized at the factory by means of the two steel adjusting screws . located in the shunt potential flux gaps of each stator. These appear just above the supporting bracket for the lag and light-load plates and are readily accessible from the sides of the Fig. 3 , Magnetic suspension system used on 2-stator meter. See Fig. 2. meters 7 GEH-2762B DS-SO and DS-60 Series Polyphase Switchboard Watthour Meters
1. Raise the rotor until movement is stopped by 3. Inspect the outer suspension assemblyfor any the centering pin . In this postion, the disk should dirt or magnetic particles. ( Use anon-magnetic tool i have clearance below the upper pole faces of the to clean, if necessary.) Assemble the assembly into retarding magnet. The clearance can be adjusted the hole at the top of the die-cast frame and enter by moving the outer suspension assembly. the rotor into the assembly. The centering pin will be guided into the hole in the bushing by the counter- 2, Depress the rotor until movement is stopped sink. by the lower guide pin. The disk should move down- inch to ward 0.005 0.010 inch and have clearance 4. Finger tig’hten the upper suspension setscrew. above the lower pole faces of the retarding magnet. - This downward motion and clearance can be ad- justed by moving the lower guide assembly . 5. Inspect the lower guide for any dirt. Insert it into the hole at the bottom of the die-cast frame and enter the centering pin into the bushing in the bottom Removal of Suspension i of the shaft. If it becomes necessary to remove the suspension system, it can be done in the following manner: 6. Finger-tighten the lower guide setscrew. 1. Remove the register, nameplate, and retard- 7 Assemble the retarding magnet ing magnet , . . CAUTION: IN REMOVING THE RETARD- 8. Center the disk in the retarding-magnet air ING MAGNET , IT IS IMPORTANT NOT gap by moving the outer suspension assembly. TO ALLOW ANY MAGNETIC OBJECT , Tighten the upper suspension setcrew. SUCH AS /1 SCREWDRIVER BLADE OR MAGNETIC GAP. CLEANER , TO COME 9. Move the lower guide upward until motion of INTO CONTACT WITH THE MAGNET the disk is noted. Then move the lower guide down- POLE FACES BECAUSE IT WILL POS - ward 0.005 inch to 0,010 inch. Tighten the lower SIBLY WEAKEN THE MAGNET . ALSO, guide setscrew. KEEP THE MAGNET AWAY FROM MAGNETIC PARTIC LES. 10. Check the position of the disk in the magnet < 2. Loosen the lower gui'de setscrew and remove gap. Refer to the INSPECTION section on page 7. the lower guide. 11. Replace the register and nameplate. 3, Loosen the upper suspension setscrew and remove the outer suspension assembly - . MAGNETIC SUSPENSION SYSTEM NOTE: The outer suspension assembly (3- and 4-stator Meters) contains the outer magnet and centering pin. Necessary precautions should be ob - Three- and four-stator meters with serial num- served in handling to prevent demagnetiza - bers 30, 861, 500 and above have a magnetic suspen- lion of the magnet or damage to the center sion system consisting of a rotor shaft with two - suspension ing pin, Magnetic objecis should not touch laminated disks, an inner magnet on the magnet. Cleanliness is essential ivhen each end of the shaft, and outer suspension assem- handling this assembly. Keep it away from blies at each end paired up with the inner magnets. magnetic particles. The two pairs of magnets are required to provide the lift necessary to float the rotor assembly. It 4. Remove the rotor. The die-cast section at the should be noted that the two outer suspension as- interchangeable } top of the shaft contains the inner magnet, so take semblies are not nor are the rotor precautions as described in the Note under vstep 3 assemblies interchangeable. For best results they above. should be used as a complete set as supplied from the factory, consisting of one rotor assembly and properly color coded outer suspension Assembly of Suspension the - assem- blies. The upper assembly is color-eodedgreen and Assemble the suspension system as follows: the lower one yellow.
1. Place the meter in the operating position. No maintenance of the magnetic suspension sys- 2. Inspect the inner magnet for any dirt or mag- tem should be required in normal service during netic particles. ( Use a non-magnetic tool to clean, the life of the meter. No lubrication is required nor if necessary.) Insert the rotor in the die-castframe. should any be used. 8 DS-SO and DS-60 Series Polyphase Switchboard Watthour Meters GEH-2762B
Inspection CAUTION: IN REMOVING THE RE - TARDING MAGNETS, IT IS IMPORTANT With the meter in its normal operating position, NOT TO ALLOW ANY MAGNETIC inspection can be made as follows: OBJECT , SUCH AS A SCREWDRIVER BLADE OR MAGNETIC GAP CLEANER, TO COME INTO CONTACT WITH THE 1, The position of each laminated disk should be MAGNET POLE FACES BECAUSE I.T approximately centered in its respective retarding- WILL POSSIBLY WEAKEN THE MAG itsfloat - magnet gap. Raise the rotor assembly from NETS. ALSO, KEEP THE MAGNETS height until movement stops. The assembly should AWAY FROM MAGNETIC PARTICLES. have moved 0,008 inch to 0,015 inch, and there should disk and the upper pole be clearance between each 2 Loosen the upper and lower suspension set retarding magnets as well as all po . - faces of both - screws and remove the outer suspension assemblies. tential-coil poles and current-coil poles on all stators. NOTE? Each outer suspension assembly 2, Allow the rotor assembly to return to its nor- contains an outer magnet and centering mal float height and then depress it until movement pin , Necessary precautions should be ob - stops. It should have again movedO.008 inch to 0.015 served in handling to prevent demagne - inch, and there should be clearance between each tization of the magnet or damage to the disk and the lower pole faces of both retarding mag- centering pin. Magnetic objects should nets as well as all- potential-coil poles and all cur- not touch the magnet. Cleanliness is es - rent-coll poles on all stators. sentialwhenhandling this assembly , Keep it away from magnetic particles. If the above conditions are not met, the suspen- sion system should be reset. First, determine 3. Remove the rotor assembly. The die-cast sec- whether both - disks are centered in the retarding tion at each end of the shaft contains the inner mag- magnet gaps. If not, check to see if foreign matter nets, so take precautions as described in the- Note such as lint, chips, hair, etc., are causing the dif - under step 2 above. ficulty. Next, rotate the rotor assembly to make sure that any slight wpbble in the laminated disk Assembly of Suspension assemblies is not causing the appearance of an off - center condition. If not, and if only one disk is not Assemble the suspension system as follows: centered, loosen the setscrew in the hub and reposi- tion the disk. 1. Place the meter in the operating position. CAUTION: BE SURE THAT THE ANTI - 2. Inspect the inner magnets for any dirt or mag- CREEP HOLE IN EACH DISK IS 180 netic particles. ( Use a non-magnetic tool to clean, DEGREES APART WITH RESPECT TO if necessary.) Insert the rotor assembly into the die- EACH OTHER . cast frame and hold it in place by hand.
If the disks are properly centered, but incorrect 3. Assemble the upper retarding magnet, then up-and-down travel is at fault, or if both disks are assemble the lower retarding magnet. off center approximately the same amount, correc - - suspension assemblies tion can be made by moving the outer suspension as 4. Inspect the two outer - magnetic particles ( a non mag semblies. For example, if insufficient down travel for any dirt or . Use - - - , ) two outer the problem, slight movement of the lower as netic tool to clean, if necessary Insert the is - the top and sembly downward, as well as slight movement of the suspension assemblies into the holes at upper assembly upward, will correct the problem. bottom of the die-cast frame. (Be sure that the It should be noted that corrections of down travel, assembly inserted at the top is color coded green - - ,) up-travel, or the off -center condition of both disks and the one at the bottom is color-coded yellow require that both outer suspension assemblies be Enter each end of the rotor shaft into the suspension moved. assemblies. Removed of Suspension 5. While holding both outer suspension assem- blies, move the suspension system sufficiently so in the re If it becomes . necessary to remove the suspen- that the two disks are visually centered - sion system, it can be done in thefollowing manner: tarding-magnet air gaps. 1 Remove the register, nameplate, and retard 6. Lightly tighten the lower suspension setscrew. . - that ing magnets. Again move the upper suspension assembly so 9 GEH-2762B DS -50 and DS-60 Series Polyphase Switchboard Watthour Meters the disks are centered, then lightly tighten the upper LUBRICATION suspension setscrew. No lubrication is necessary with this type of 7. Make the final adjustment of the suspension meter bearing. system. Refer to INSPECTION section on page 9. REPLACEMENT 8, Replace the register and nameplate, At each test period the bearing should be dis- MECHANICAL BEARINGS assembled and the jewels cleaned and inspected for (3- and 4-stator Meters) worn spots. Three and four-stator meters with serial num- bers below- 30, 861, 600 have mechanical bearings to The following procedure, with reference to Fig, 4, support the rotor assembly. These bearings are de- is recommended for replacement of an enclosed- i scribed below. type ball bearing.
Enclosecl-type Ball Bearing (Lower Bearing) 1. Remove the jewel-screw assembly by insert- The enclosed-type ball bearing consists of a ball ing a screwdxnver into the slot in the lower jewel held between an upper and a lower jewel, the whole screw (d) and backing out the screw. When the lower ( ) being enclosed in a protective sleeve, as shown in jewel screw (d) has been backed out, the section a split or adapter Fig, 4. will still be engaged in the shaft . A pull is required to disengage itbeforethe assem- bly can be removed. The force exerted need not be sufficient to bend the rotor disk. To remove the upper jewel assembly (a) and ball bearing (b) from jewel screw assembly, unscrew protective LOWER END OF the - ROTOR SHAFT sleeve (c) with a pair of pliers. eX / X / / / bearing is readily / / The assembly of the accom- v/ / plished by following the instructions in steps 2 / /. zLi JU through 4 below. r, ‘ ( A) 4- UPPER JEWEL ( ) ASSEMBLY 2. Hold the sleeve c in one hand with the threaded end up and drop the upper jewel assembly (a) into the sleeve, making sure that the shoulder (f ) is ( ) F SIDE-THRUST pulled through the small hole in the sleeve until it SHOULDER * BEARING appears, as shown in Fig. 4, ( B ) __ \ INTERNAL BALL BEARING Drop the into the sleeve (c), and it will SHOULDER 3. ball then rest in the jewel cup of (a). [7 ( C) r* A PROTECTIVE 4. Screw in the lower jewel screw (d) and make SLEEVE sure that the sleeve (c) is tightened down firmly. Ki (D) The assembly of the complete bearing in the JEWEL V " of top bearing SCREW watthour meter and the setting the % can be made as outlined below. % ( ) LOCKING 5. Screw the lower jewel screw d into the ad- SCREW justable guide bushing (e), being careful to see that jewel assembly (a) engages the hole in / the upper the adapter or the hole in the end of the split shaft.
top bearing clamping screw and ! (E) 6. Loosen the - METER wmm ADJUSTABLE drop the bearing until it rests on the top of the shaft. FRAME BUSHING Hold a finger on the top beai'ing, 7. Screw the lower jewel screw (d) into the guide F/g. 4. Enc/osed-fype bo// bearing used on 3- and bushing (e) until the shoulder (f ) is snug up against 4-stator meters below serial number 30,861 ,500 either the adapter or the end of the split shaft. 10 DS-SO and DS-6Q Series Polyphase Switchboard Watthour Meters GEH-2762B
CAUTION: TOO MUCH PRESSURE MAY The use of oil on the register bearings is not DAMAGE THE ADAPTER OR THE SHAFT . recommended. FOR THAT REASON IT IS SUGGESTED THAT THE TOP -BEARING CLAMPING For proper care .of demand registers, refer to SCREW NOT BE TIGHTENED .BUT THAT their respective instructions. See the list of publi- THE PRESSURE OF A FINGER ON THE cations on page 14. TOP BEARING BE USED TO PUSH THE UPPER JEWEL ASSEMBLY ( a) INTO STATOR THE ADAPTER OR SPLIT SHAFT UN - TIL THE SHOULDER ( j) IS SNUG UP If a potential or current coil is damaged, the AGAINST THE END OF THE ADAPTER entire stator should be replaced. OR SHAFT '. 8. Should the rotor disk need adjusting for proper 8 NSTALUMG DEMAND REGISTER clearance in the retarding-magnet air gap, such adjustment can be accomplished by loosening the Conversion of DS-50 and DS-60 series watthour clamping screw of the guide bushing (e) and moving meters to accept a Type M ~30, M-31 or M-51 de- the guide bushing and jewel-screw assembly up or mand register can be accomplished by moving the down, as desired. meter unit approximately 1-1/2 inches toward the back of the case. The changeover is made as follows: 9. Adjust the top bearing by positioning it 0.020 inch to 0.030 inclv maximum above the top of the rotor shaft. Then tighten the clamping screw.Check A . To convert 2-stator meters: the setting by measuring the up-travel of the rotor. 1. Remove the cover and slide the cradle out of 10. Always check the calibration of the meter if the meter case. In the DS-50 series, the two screws the bearings have been replaced or if theposition of holding the terminal block to the case must be re- the meter rotor has been changed in the magnet moved. To completely remove the meter unit from air gap. its case, depress the safety latch (see Fig. 5) enough to clear the stop post. Upper Bearing .. * 2 Remove the watthour register, nameplate, and bearing of a guide pin mounted . The upper consists two potential indicating lamp assemblies. in an adjustable top bearing, and a guidebushing set - - into the tip of the rotor shaft. 3. For the DS-60 series, remove the two contact- The top bearing assembly is supplied with lubri- block mounting screws and pull the contact block cant at the factory, and should require no attention away from its cradle mounting until the lower frame- during the normal life of the meter. mounting screw is accessible.
If adjustment or replacement of the top bearing is necessary, reset by positioning it 0,020 inch to 0.030 inch maximum above the top of the rotor shaft. BLOCK setting Ml Then tighten the clamping screw. Check the SAFETY LATCH by measuring the up-travel of the rotor. r UPPER LOCKING T SPACER MOUNTING LATCH - i! — BRACKET REGISTER CRADLE
INSULATION ' - register dial canbe a damp - • F The face cleaned with • .7.^ cloth.
When replacing a register, be sure that the new CONTACT ft •SPACER ' MOUNTING ASSEMBLY POST register has the same register ratio. Carefully BLOCK —fh inspect the mesh of its worm gear with the worm on LOWER FRAME CONTACT-BLOCK dS MOUNTING SCREW the rotor shaft to see that it is approximately 1/3 MOUNTING SCREWS* to 2/3 the depth of tooth on the register worm gear. A means for adjustment is provided in the eccentric LOWER LOCKING LATCH A adjusting screw in the bracket on the back of the register. Avoid meshing too deeply, which might cause friction and affect the accuracy of the meter. Fig . 5. Cradle for 2- $tator meters with assembly removed 11 4. Remove the three frame-mounting screWvS, spacer mounting post, two spacer mounting-bracket UPPER LOCKING spacer mounting bracket Move back F LATCH screws, and . I CONTACT BLOCK the meter in the cradle and position the lower ASSEMBLY mounting boss behind the lower cradle •gl-V frame- - SPACER MOUNTING mounting bracket and the upper frame-mounting POST bosses in front on the upper cradle-mounting SAFETY LATCH bracket. UPPER Use one of the spacer mounting-bracket screws CRADLE -MOUNTING to secure the frame to the lower cradle-mounting BRACKET bracket and the two short frame-mounting screws upper mounting bracket to secure the frame to the . I MIDDLE FRAME - MOUNTING < On DS 50 series meters assemble the terminal !; BRACKET - u block to the case with two terminal-block mounting screws. P LOWER CRADLE - MOUNTING 5. Reposition the contact block onto the cradle i/ BRACKET and assemble the two mounting screws where ap- plicable, : SPACER MOUNTING 6. Add the demand-register mounting studs, de- IMPOST indicating lamp assem mand register, potential- - - CONTACT BLOCK blies, and new nameplate. To make connections • ASSEMBLY covering the demand ^ refer to separate instructions LOWER LOCKING register. L A T C H ( REGISTER section, page 7* Adjust the mesh see 11). Check the meter calibration and adjust if necessary. Fig. 7. Crod /e tor 3- and 4-stator meters with assembly < * removed NOTE: Types M -30, M -31 andM -51 de - registers require a motor shield mand : when used on meters having magnetic sus - B. To convert 3- and 4-stator meters pension . Before installing demand regis - serial numbers below 1653204 ters with out of on DS -60 series meters, it is necessary 1. Remove the cover and slide the cradle the motor shield and replace the meter case. On the DS 54 meter, the two screws to remove - be re it witha shield of later design. This change holding the terminal block to the case must - the unit from in the shield design ( see arrow in Fig, 6) moved. To completely remove meter safety latch (see Fig. 7) to eliminates mechanical interference be - its case, depress the tween the register and the meter. clear the case stop. 2. Remove the watthour register and nameplate.
3, Remove the four frame-mounting screws, the middle frame-mounting bracket and two spacer mounting posts. 4. Rotate the frame parallel to the back of the cradle until the upper and lower frame-mounting boss can be located behind the upper and lower cradle mounting bracket. Assemble the upper and - ( in the con lower frame-mounting screws supplied - version kit) but . do not tighten. Assemble the shallower middle frame-mounting bracket to the cradle and frame, using the original screws. Then (o ) Old sfyie shield (b) New slyle shield tighten all screws. On the DS- 54 meter, assemble the terminal block to the case with two terminal- Fig. 6. Motor shield for demand registers block mounting screws. 12 D5-50 and DS -60 Series Polyphase Switshhoard Watthour Meters GEH-2762B
5, Add the demand-register mounting studs, the 4. D-51 3-wire pulse generator, with demand register and the new nameplate. To make very high pulse rate. connections, refer to separate instructions covering the demand register. CAUTION: WHEN THE TYPE D -41 OR D -51 IS USED , COLOR CODING MUST 6. Adjust the mesh (see REGISTER section, page BE CAREFULLY FOLLOWED ON THE K > 11). Check the meter calibration and adjust if ( RED ) , Y ( YELLOW ) , AND Z ( BLACK ) necessary. LEADS , SINCE THE Y AND Z LEADS HAVE DIFFERENT VOLTAGE LEVELS , ON THE D -41 , DO NOT APPLY HIPOT VOLTAGE BETWEEN K , Y AND Z TER - MINALS , OR THE SOLID -STATE COM - PONENTS MAY BE DAMAGED . ON THE D-51, DO NOT APPLY HIPOT VOLT - AGE TO KYZ TERMINALS . IF THE TRANSFORMER IS IIIPOTTED , DO NOT EXCEED 1500 VOLTS . wfwiprisiiMpaif For separate instructions covering wiring and installation of contact devices and pulse generators, :V - ' refer to the list of publications on page 14, #lltfc: lil SHmSisSsSSi, All meters ordered with a pulse device, or for use with a pulse device, have, in addition to the pinion on the rotor shaft, three pulse device leads . . . V.J that 2 wire or 3 wire i - and terminals, so either a - v - * < pulse device can be used. • v.
‘-.i; M O POTENTIAL INDICATING LAMPS All meters are furnished with potential indicating lamps. These are connected to isolated secondary windings on the potential coil cores, so that they give a positive indication of the presence of potential ******«£? magnetic flux in the stator core.
Fig . Q , Type D-30-V contact device mounted on a Type DETENT DSW -63 meter For applications in which reverse rotation of the PULSE DEVICES meter must be prevented, a detent is available. For detailed installation instructions, refer to Instruc- Pulse generators and mechanical contact de- tions GEH-2763. vices for DSW-50 and DSW-6.0 series meters are mounted on the front of the meter frame, just below CONNECTIONS the register. A separate pair of mounting holes is provided for this purpose.See Fig. 8. The spur drive The connection diagrams in this book ( Figs. 9 spur gear on the pulse device meshes with a pinion through 21) show approved methods of wiring these bobbed into the rotor shaft. meters. Other methods are possible which are electrically equivalent and which, for particular maybe used on DSW Four types of pulse devices - , may result in more convenient or 60 series meters: installations 50 and DSW- economical wiring. If the meter is properly con- the circuit, the disk will rotate counter 1 D 20 V 2 wire, low pulse rate. nected in - . - - - clockwise, as viewed from above. 2 D 30 V 3 wire, low pulse rate. . - - - NOTE: In this edition minor changes have diagrams 3. D-41 3-wire pulse generator (with been made to the connection auxiliary amplifier) with very ( Figs . 9 through 21) , solely to improve high pulse rate. clarity and consistency .
13 Watthour Meters GEH-2762B 05-50 and D$~60 Series Polyphase Switchboard
LIST OF OTHER PUBLICATIONS Schenectady, N Y. 12345. ) (Order from Distribution Services, General Electric Co., .
Instruction Books: GEH-1529 Type M- 30 Demand Register GEH-1451 Type M-31 Demand Register GEH- 2783 Type M-51 Demand Register GEH-2764 Types D~ 20 and D~ 30 Contact Devices GEH-2767 Type D-41 Pulse Generator GEH- 2781 Type D-51 Pulse Generator GEH 2763 , . . - Installation of Detent Assembly . . GEM5372 Test Plug, Model 12XLA12A1 - Renewal Parts Bulletins: GE P-4139 DS 50 and DS 60 Series Meters 4091 - - and Type D 41 Pulse Generator GEF- Types D- 20 and D-30 Contact Devices - GEF-4344 Type D-51 Pulse Generator GET-813 How to Test and Adjust GE Watthour Meters ^ GET-1887 Constant and Register Ratio Data GET 3048 How to Select Contact Devices and Pulse Generators -
t; *
14 DS-50 and DS -60 Series Polyphase Switchboard Watthour Meters GSH-2762B
LINE UNE I 2 5 2 W Hi xi
i CONTACT DEVICE CJ'* - CONNECTIONS FOR r - CONNECTIONS FOR Q DEMAND RESISTER OR ^ 0EMANDRECI5 TER OH Q-* 0 51 TRANSFORMER CONTACT £3 i * - t;; 0 " 51 TRANSFORMER 9 OE VICE i - 0 0 / Y rV\ V \ , RED 09 ~ — /vw*> neo — j— i rr\. ) L 2 O I 2 z l O 2 2 o 2 uO g a: J o < i a cc s t- UJ 2 / I On Os 07 Os 0» O 9 OT Os O3 J 1 2 a a 2 K ? QIO Oe 6 (SR (S2 C)« O o 0« a OH Oa Qi dY> - / V - %. x. \ , . < ( *
SACK ViEV / T £ ~ LOAD LOAD r BACK VIEW for OS 53 , DSM-53, and Fig. 9. Connections for Types OS -53 , DSM -53 , and F/g. 10. Connections Types - DSW 53 meters , 3-wire sing /e-phase, 3-wire DSW 53 meters , 2-wire sing/e-phase, w /f/i - - 2 , or 3 wire w /fh curren/ potenf /a/ and curren/ /rans/ormers - phase - networkf transformers
UNE I 2 3 LINE BACK VIEV/ — H N ! 2 3 | 1 *— H| X | * jr -CONTACT DEVICE 1 5J * : ESI—< — —| ” HU r 2 Y K CONTACT DEVICE CONNECTIONS FOR DEMAND REGISTER OR CONNECTIONS FOR D 51 TRANSFORMER - > /-DEMAND REGISTER OR QQ 1 0- 51 TRANSFORMER RED W - QQ* ~E£[U. * GO FY J
I LA»W> 2 O ^ > X TWYj prYV 5 8 or o j
( n c • n > 3 2 / It 9 4 s I Oil O O7 c> pi O' 2 .'0 8 6 4 2 O z O10 o9 OeK C>4 0 ' Y * Hi *\ 1 "'Mtx,' r \ r
:r 1 t -v LOAD BACK VIEW LOAD * Fig . 11 . Connections for Types OS -53 , DSM -53 , and Fig , 12 , Conned/ons for Types DS -54 , DSM -54 , and DSW -53 meters , 3-wire 3-phase, wi/h po/en/ial DSW -54 meters with potential and current and current frans/ormers transformers 15 GScH-2762B DS SO and DS-60 Series Polyphase Switchboard Watthour Meters
L I N E BACK VIEW LINE I 2 3 I 2 ft pT i J & *
I CONTACT CT3- - CONNECTIONS FOR CONTACT CONNECTIONS FOR E3 '*- DEVICE ~ 1 DEMAND REGISTER DEVICE * 1 DEMAND REGISTER er>~ A AOR D OI f 1I lOR D 5! TRANS- n - " o O O - *u TRANSFORMER ; FORMER. ^ 9 __ 2 Y K O O 9*-9. RED RED — fCD cCO m m 7 O 2 I 2 O a j cc o < rc J <( UJ O.' 7 k 3 \ LJ v \ i \ \ f 'V I 1 ' 6 6» o? os 03 I z V Y y ' Y Y v T Y Y — " " 09 0 7 05 ) 3 5 QI2 QIO 06 Q6 Q4 ^ \< QK) ( > 8 2 ^ I \
H| ' Axi SHORT - ( ( CIRCUITING BAR M ( S i - T. LOAD -A- L O A D BACK VIEW Fig . 13 . Connections for Types DS-55, DSM-55, and Fig. 14. Connections for Types DS-63, DSM-63, and DSW -55 meters with potential and current DSW-63 meters, 2-wire s /ng/o-phase, with transformers po^eniia/ and current transformers UNE 2 3' f7 LINE BACK VIEW l 2 3 Hi XI 3CD ITjlfxp CONTACT CONNECTIONS FOR ^ DEMAND REGISTER OR DEVICE 4 11Lt 0 TRANS « * 51 c i - - CONTACT ^> CONNECTIONS FOR Y K FORMER fr. Q DEMAND REGISTER OR * 9 cr DEVICE ^6 D-51 TRANSFORMER Z Y K i RED ti. /V\ p/YV
o o ^ 2 I 2 I O U 8 tt. ft: O O _1 -J t 4 -a: ft: < k 5 < UJ P IU I 7 7 I I \ / W V > > r \ * A f \ t L rnuuu IAlO 08 06 04 \ 62
Hlll xl H m #x SHORT - H * CIRCUITING BAR „ 1 1 HlllJX| SHORT-CIRCUITING ' * BAR
LOAD T BACK VIEW -±: LOAD Fig. J 5 * Connections for Types DS -63 , DSM -63, and for DS 63, DSM 63, and DSW -63 meters, 3-wire single - phase , 3-wire Fig . 16 . Connections Types - - 2-phase, or 3-wire network, with current DSW -63 meters, 3-wire 3-phase , with potential transformers and current trans formers
16 £>$-50 and DS-60 Series Polyphase Switchboard Watthour Meters GEH-2762B
mnsu BACK view LINE Hi X | LINE N 2 3. N I 2 3 BACK VIEW
CONNECTIONS TOR 15 CONTACT 1 ^ O 0 0|, ? « ( DEMAND REGISTER 3rT ZY DtvlCLDEVICE =>- > I 0- 51 TRANS - 1= ie Z Y K FORMERS on irp Vs rvnm /YYY> t A A A A ° — — j t t ^ ra=-— 1 REO - »- • CONTACT— DEVICE m m CONNECTIONS TOR &RED DEMAND REGISTER ^0RD-5ITRANS FORMER - Hi H Hi i i li SHORT- CIRCUITING ;gfA 1 BAR ’ixn T • FHt LOAD LOAD Fig 18 , Conned/ons for Types DS 65, DSM 65, and Fig, 17 , Connections for Types DS-64, DSM-64, and . - - DSW 65 meters with and current DSW -64 meters with potential and current - potential transformers transformers * *> BACK VIEW LINE CONTACT DEVICE CONNECTIONS 1 A FOR DEMAND REGISTER OR H D* 6I TRANS - 6 FORMER Z YcmYi— ^ RED r/Y% -J $ ~ HI j?i yjpr jA| SHORT-CIRCUITING MM iff difx { BAR ifigpr» LOAD • # P/g. 19, Connections for Types 03 -66, DSM-66, and DSW-66 meters with current transformers 17 GSH-2762B DS-SO and DS-60 Series Polyphase Switchboard Watthour Meters L I N E 3W»3PH 3W.3PH BACK VIEW CIR. I CIR . 2 I I 2 3 I 2 3 HI Xl l9 7 ,151 0131 Oil * i i Vl ' Hr IB 1 14 12 H| § " xi '= / \ < f- i HT* U *1 -t DV'M HI § _ 69 rrwv ®(R /YVYT L»*i± ( - ' CONTACT DEVICE R E D - ~ 4 / VAAAJL/-^ ^ VAAA/ / I CONNECTIONS FOR DEMAND D~1 REGISTER ON DSM _ sly si/ M/ JSly sly \ /!>!/ sly sly <£> \Jy^ ' SEE NOTE ^2 7 SEE MOTS *2 o &S © CONNECTIONS FOR TESTING CONNECTIONS FOR TESTING sr RIGHT STATOR LEFT STATOR 5« © 2“ NOTES G l CONCENTRIC BINDING POSTS 4« q-RED THUMB NUTS CONNECT TO STUDS © BLACK THUMB NUTS ENGAGE METER y INTERNAL CONNECTIONS. 2. REMOVABLE LINKS MUST BE LOCATED * 1 AS SHOWN BEFORE INSERTING PLUG i SEE NOTg *iQ 1 f SEE NOTE lfc> t in f~ * ' ' * —vY 2“ o CURRENT POTENTIAL G r SOURCE SOURCE ft. TEST PLUG { FRONT VIEW) 3ii G BLACK SIDE UP PORTABLE STANDARD OOPOO ft © G LOAD SEE NOTE*? £ © CONNECTIONS FOR TESTING BOTH STATORS © WITH POTENTIAL COILS IN MULTIPLE AND CURRENT COILS IN SERIES © 91 2 i F/g. 22. Field testing connections for Type DS-63 meter, using test plug Mode! 12XLA12 A1 si G K> CO B3 SEC MCTF 3 SEE NOTE 3 DO o TEST PLUG TEST PLUG o II 3 ft I7il » U S «5 173 ® CFRONT Vl£w) CFRONT VIEW; = ra RED OP © © © o 1 RES SIDE OP ® ® ® I 1 1 i © raa* i ® j fed © - 1 © ® §> 1 ® 14 < il t 14 16 1 rfei« 18 _| e : ?o: ? 2Q - i * * SEE NOTE 56 | SEE NOTE tc i & S£g fJQTE ? $££ NOTE lg) » A X A \ A i S3 IT L T3 ? SEE MOTS 2 SEE «rr£ z o SEE NOTE 3 SEC NOTE 3 5 Ot o CURRENT CURRENT SOURCE SOURCE a POTENTIAL POTENTIAL s SOURCE SOURCE a, TEST PLUG O TEST PLUG r { Cl [FRONT VIEW) I I o CFRONT VIEW) ^ c BLACK 3805 UP H J BLACK StOE UP O jP0RTA8L£ PORTABLE Os STANDARD STANDARD o o oo o I : 4 [ V5 ; i ; ft LOAD L LOAD t i i : NOTES e i CONCENTRIC BINDING POST o RED THUMB NUTS CONNECT TO STUDS . b SLACK THUMB NUTS ENGAGE METER ts SEE NOTE 3 i S£5 NOTE 3 : ~ INTERNAL CONNECTIONS 5* i r \ f TEST PLUG TEST PLUG 2 TWO TEST PLUGS MUST SE USED FOR a ) CFRONT VIEW) (A CFRONT VIEW * TESTING THREE STATOR METER TO RED UP RED UP ® ® ® - imI J ISOLATE M£T£R STATORS I © © © ro c I 3 REMOVABLE LINK MUST BE LOCATED AS C/$ t2 • 14 ICfl is— . : . ’ so SHOWN BEFORE INSERTING PLUGS SEE NOTE tc 5 NOTE to i \ i ( SEE XOTE ;» A K SEE ROTE 16 U 3 SEE MOTE 2 S££ MOTE 2. tr- o a SEE KOTg 3 Sg£ NOTE 3 CURRENT CURRENT 3CWRCE SOURCE a POTENTIAL 'POTENTIAL SOURCE SOURCC I 1 o TEST PLUG. c i TEST PLUG i < 3 7 o (FRONT WEW3 I > 3 5 17S * 9 : 2 : . 1* ^v V. (FRONT VIEW) l BLACK S3DE UP / - * ATiS | * I SLACK ace UP @ " j > IT ® s s ® O © !i©C PORTABLE PORTABLE / I • III ; 0 111 j {STANDARD ;’ STAN ARD O Uo © U © 2 4s 6 6 8 1 TO i I I >i : LOAD i : ( LOAD A TOP RIGHT STATOR TEST CONNECTIONS TEST CONNECTIONS FOR ALL STATORS WITH POTENTIAL COILS IN MULTIPLE AND CURRENT COILS IN SERIES rig. 23. Field testing connections tor Type OS-64 meter, using test plug Model 12XLA12A1 T\ Lrw-' t ^-1 ( SE£ SOT; lq SEE NOTE *10 L * «« V fib © v SEE NOTE b 5 s a • ®-3 '' Y an? $- - * * CURRENT POTENTIAL l CURRENT POTENTIAL SOURCE SOURCE ©s SOURCE SOURCE o r < C U 02 =3 Q TEST PLUS TEST PLUG ? ! o o PORTABLE 3 PORTABLE ( ) (FRONT VIEW) iW o FRONT VIEW JMl1) WLJ L STANDARD J STANDARD a. » SLACK SIDE UP 1 8UCX SIDE UP ! . I O»S5 » p o o o |£ S» 4 S | J? QQOOO © I i 7 ! J i t LOW) I ^ LOAD l t L o / ^ bs 7 SEE NOTE y- o SEE NOTE ^2 / T ^ 05 © * CONNECTIONS FOR TESTING CONNECTIONS FOR TESTING 5 RIGHT STATOR LEFT STATOR *0 © NOTES l CONCENTRiC SffltMNG POSTS X Q-RED THUMB NUTS CONNECT TO STUDS H-SLACK THUMB NUTS ENGAGE METER INTERNAL CONNECTIONS. o 2. REMOVABLE LINKS MUST BE LOCATED 5ft 1 AS SHOWN BEFORE INSERTING PLUG © I 05 L-rry v 1 - 5 !- • l #*5 SEE NOTE ^lc f SEE, NOTEgla 3 y _ ‘ " V SEE NOTE VV 4 > £ SEE NOTE b l v V rjJr V ' V fib ^ ' YV Y v Y V v y vv v y y w VY v ^ ^ O CURRENT n CURRENT POTENTIAL © POTENTIAL SOURCE SOURCE SOURCE SOURCE a. IF CJ A Ml- TEST PLUG TEST PLUG 5 O O {FRONT VIEW) (FRONT VIEW) fMo © PORTABLE O PORTABLE BLACK SIDE UP BLACK SIDE UP STANDARD STANDARD [ 3“ 0 QOOOQ © 1/ e / ! * LOAD I ; LOAD i t r i SEE NOTE *2 7 SEE NOTE*2 / T J © © CONNECTIONS FOR TESTING ALL STATORS CONNECTIONS FOR TESTING ( WITH POTENTIAL COILS IN MULTIPLE AND Z COIL ft SERIES CURRENT COILS IN a m F/g. 24. Field testing connections for Type DS-65 merer, using fes/ p/ug Mode/ 72XLA 72A 7 J N iso 65 DO l O DO -SEE NOTE * la -SEE NOTE * la SEE NOTE* tb I _ SEE NOTE* 16 iV : ' 4-f 1 - - YV CURRENT POTENTIAL v 'CURRENT POTENTIAL K> V V 1A SOURCE SOURCE SOURCE SOURCE N WH a ! X OZ . • a TEST PLUS * - " TEST PLUG - (FRONT V5EWJ iiiSin (FRONT VIEW) 0 m m PORTABLE PORTABLE so SLACK SIDE UP : SLACK StOE UP STANDARD S" ® STANDARD 2 5 9S | n ooo ooo gyg gjr^ ; t / ' 1 «/5 / I l fl 7 LOAD LOAO / Ol SEE NOTE*2 I I SEE NOTE * ? f o "CONNECTIONS FOR TESTING CONNECTIONS FOR TESTING 2 UPPER SECTION OF LEFT STATOR LOWER SECTION OF LEFT STATOR 3 5 0 * . o B I /"V\ SEE NOTE*la SEE NOTE * io SEE NOTE lb SEE NOTE* lb * r CURRENT : POTENTIAL ' 'CURRENT POTENTIAL SOURCE SOURCE SOURCE SOURCE *5‘ (ft z:: 1 TEST PLUG TEST PLUG ' ) {FRONT VIEW) Jigjli®! CFRONT V£W W PORTABLE PORTABLE J SLACK SIDE UP o 8LACK SIDE UP m STANDARD STANDARD m OOO 2 5 b f s ji! 5 g f » o o o X * m "3 7 * r r t i LOAD i 7< 1 LOAD 2 SEE NOTE S I SEE NOTE 2 £ / W ' ‘ - 0 CONNECTIONS FOR TESTING CONNECTIONS FOR TESTING RIGHT STATOR COMPLETE LEFT STATOR $ A 3- O < 0 SEE NOTE * la SEE MOTE lb a. , r * NOTES 1 i CURRENT POTENTIAL L CONCENTRIC BINDING POSTS SOURCE SOURCE O-REP THUMB NUTS CONNECT TO STUDS, a 1 VVI < b-BLACK THUMB NUTS ENGAGE METER a INTERNAL CONNECTIONS. TEST PLUG " CFRONT VIEW) 2. REMOVABLE LINKS MUST BE LOCATED PORTABLE AS SHOWN BEFORE INSERTING PLUG . o 8LACX STCE UP STANDARD c ooo 1 / 7 f ) z t l LOAO o SEE W>TE*2 I I CONNECTIONS FOR TESTING ALL STATORS WITH POTENTIAL COILS IN MULTIPLE AN0 CURRENT COILS IN SERIES Fig. 25. Field testing connections for Type DS-66 meter, using test plug Model 12XLA12A1 SEE T£ 3 SEE rtOTE 3 « I \ TCST PLUG TEST PLUG TEST PLUG {FROta V«» Crscwrr vrCw) (FTtONT VIEW* SEE wore !o SEE NOTE lo Rg 1« R £3 SIDE UP RED Sl£>£ OP £> SIDE UP SEE NOTE lb see *QT£ ib lb o ; o IV a SEE ware 2 SEE MOTE g 2 3 Q. SEE MOTE 3 SEEKOTE 3 SEE NOTE 3 L^WYVT i CURRENT CURRENT SOURCE SOURCE 1 POTENTIAL POTENTIAL o w >ir 1' a SOURCE SOURCE VI TEST PLUG TEST PLUG TEST PLOC CFRCWT VIEW) CFRONT tfi£w) ) CFRONT VIEW 5 BLACK SIDE OP SLACK SC UP o BLACK StOE V> SG O PORTABLE © PORTABLE PORTABLE to -STANDARD STANDARD ' STANDARD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 j LOAD O LOAD LOAD [ x LEFT STATOR TEST CONNECTIONS RIGHT STATOR TEST CONNECTIONS TOP RIGHT STATOR TEST CONNECTIONS e a to SEE HOTE 3 SEE NOTE 3 © V I VI 1 \ TEST PLUG TEST PLUG $ a ) U . 5 17 c CFRONT VIEW) a {FRONT VIEW) . RED SIBEUP RED SIDE UP la ®, c jTTn SEE NQTg la rs K: « 1 NOTES l l » cb SEE NOTE !b rm. i ® ) CONCENTRIC ©INOSNG POST “ Mg HO > 16 z 3 & ±— e RED TWUW3 NUTS CONNECT TO STUDS & BLACK THUMB WJTS E? SAGE METER o INTERNAL CON.VECTWNS* Q 1 A A A • — 2 TWO TEST PLUGS MUST SE USSO FOR fiL SEE MOTE 2 £ TESTING FOUR STATOR .METER TO J- t u tSOLATE METER STATORS : J? 3 REMOVABLE LINK MUST BE LOCATED AS 5 - \ SHOWN 3EF0RE INSERTING PLUGS a sgg j^OTC Z see MOTE 3 © © POTEKTIAL source TEST PLUG © TEST PLUC {FTKttFT VIEW) cD CFfiOMT VIEW) SLACK SOC OP CLACK S70C UP © PORTABLE *ORTASLE to STANDARD STANDARD 0 OOP LOAD LOAD © &l TOP LEFT STATOR TEST CONNECTIONS sa CONNECTIONS FOR ALL STATORS WITH POTENTIAL TEST K2I COILS IN IvOJLTIPLE AND CURRENT COILS IN SERIES 5 N \ CO F/g. 26. Fiefd fesfing connections for Type DS-67 meter, using test plug Model 12XLA12A1 feO CO 05 LO 4 o ^ ma i sse won: 3 7 sec MOTE z TOST PLUG TEST PLUG /IN r£ST PLUG (FRONT View) N RED SIDE UP o Jo see MOTE :« N lb 5C£ HOT£ ) » 2 SES 2 VOTE 2 I Us o G 3 5 a, CUfiftCKT res? PLUG- resr PUAJ . SOURCE o CF»O.VT viewj-\ [*<»* ° STANDARD STAKDAAO STANDARD o o4 o o o o o o o o o o o £ f [ LOAD LOAD LOAD to SEENore TEST PLUG TEE wore 3 i s e e s (TCOKT VIEW- BLACK SIDE*UP RIGHT STATOR TEST CONNECTIONS LEFT STATOR TEST CONNECTIONS TOP RIGHT STATOR TEST CONNECTIONS see nfrr % SEE VOTE 3 sag NOTE s FT T3 TEST PLUG - i TEST PLUG x (FRONT VIEW) 3* ( FRONT VIEW) XZA iv NOTES 1 R RED SIDE UP up »: 15 !? > ; £3 SIDE UP r? is I ; POST Q * CONCENTRIC BINDING to SEC NOTE la <5 SEO THUMB NUTS CONNECT TO STUBS SP! WOTT ta JS ^ S BLOCK “HUMS NUTS EN3AGE METER DtTESNA L CONNECTIONS isT «o CT lb rCSEE NOTE IP ^ : sen wore ib 2 TWO TEST PLUGS MUST 3£ USED FOR TO £ 2 TESTING POUR STATOR METER 2 S C WOTE 5 l A ii see NOTE z ISOLATE METER STATOPS " rr ? t 3 REMOVABLE LINK MUST 8E LOCATED AS A J Urr SHOWN SEPORE INSERTING PLUGS Jl 3* 3* O i . G L a. C2i CURRENT CURRENT ; SOURCE SOURCE S u i POTENTIAL POTENTIAL 5 SOURCE TEST PLUG- T£ST PLUO i1 SOURCE ( view^ uTV (FRONT Vl W ) FRONT ? - G £ m V 1v flV BLACK SOC OP SLACK SIDED? i I I i '- 7 ; 9 ; r&wr 0 PORTABLE PORTABLE STANDARD STANDARD 2 Lil OOOOO ! *« ! ! \ L / I x\ - z \ ' rz LOAD i LOAD i / TEST PLBOA \ • i . LOAD ( see wore s CRONT view? L see NQTC s y ettcK sme up see NOTE s TOP LEFT STATOR TEST CONNECTIONS TEST CONNECTIONS FOR ALL STATORS WITH POTENTIAL Z COIL TEST CONNECTIONS COILS IN MULTIPLE AND CURRENT COILS IN SERIES to Fig. 27. Field testing connections for Type DS-69 meter, using test plug Model 12XLA12A1 FOR DSM ONLY SEMI-FLUSH SURFACE MTG FOR CSW ONLY '\ MTG- 7 PANEL LOCATION O 5 ] 6 6.4 it 5 ) 6 in* 9 o 7 o ( i : & 332 10 -32 SCREW 0 (OR STUD) 3 z tr FOR DSW-55 ONLY a. i © Fig. 28. Dimensions for DS-53 and -55, DSM-53 and -55, DSW- 53 end -55 meters m 5 8 K> N co to cn 5S GEH-2762B DS-50 and DS-60 Series Polyphase Switchboard Watthour Meters / % roj® d 1 tf> 9- » -ty—* iula s2 2 D - (M v> . V> ®* - ) ~ w «* rG 3 Sl « fO|«f 0ro|® ^. S 0 2 25 Iw 0) L to a 0§U 13 «0 r S|fO I Sg i 0 T ^ > J -~} > J 0- 8 dg a Z- 1 U»* Q ® “ o * br 0 £ _ *g=)«o < J ) M >nk 3* K W L 1 - K - - “ \ s< ' * r* > i tOjQO° H « * (0 UJ 0.* to* 93 ^ W bi s a W i D ~>d £ N ( 4 0 J fO -U. <4 « sa> a - 0£ “ * “ to — <3> r -O 2 t. SjS Q> colmN[ N £ co ho ® a S. Z U X . •4 r „i - ? S5! J w» . 4 i- O 0 S “ I ui *2 j i . o- J i ~o~ UI X T 2? 5 « CO <£> V~v» f a3 * j * lO a Ha =to ¥ 10 -J a a a= : 3 o 9 O o O 3J i a gt £ UJ » - 0d k 8 2 § S io - £ y to o 0 * * I > M® D * i *“ N wtr 0§ KSg ££ IO ® n Uj w 5 § ; j f ! IT " 2g § s ! i i t i i a ”2 fc <» ' l ! i I II !*J s V. K II !§ d HO to rm Ci * » 4 ri * Li ®|2 K> • 2 3 k — Ul § Ul Q X K d s to R <|o P o £ 35 H * © 5 I I Jte «> CO tn|<» iola> » I z Q J «0 ® N > N X o u a. T o — H V) - fei s$! to V> .2 re ia *o tc t±M SIJS c?. t . -« J iliO CJ ‘ *L* ’ 18 - u. v; <0 —• — •« > . — J x- o io|® 2|S 3 . 10 s u> .CKCCD X w o a} » 3; 0 r;-, r.LX7 « ^ ^. .. o \o[<£ g to r o OSi D =o ^ T' M «0 02 * g ® U nO 0 o; > « «0 0 * o o o* i ON (egI -O a = ^J Sz 26 •• FOR OSM ONLY SEMhFLUSH SURFACE FOR DSW ONLY \MTG. MTG PANEL LOCATION ^ 5 [ o 6 S' s si r ^ !6 t - , o in 4 10 32 SCREW w - Q (OR STUD) 3 K Y Z — i T FOR DSW ONLY 1 iP 3 \ J 24- J 11 o 94 d 4 24: S e 32- 5 18 STUDS ;^ T16 t ^ FOR CASE O % J . r * SURFACE MTG. o T= 13 ft \ PANEL 16 3 1 3 5 7 9 9 * 4fE 5 3 I 16 ~= 3 » 5 000 . . 2 -st P 0 32 SCREW “18 "3 ! - ( - 16 STUD © oooooS t • r MOR STUD) V 2 4 6 8 10 firr tL t / ° ° 3 / NUMBERING OF STUDS 3 10 32 X “ MTG. (FRONT VIEW) 32 - 8 SCREW 13 5 56— 3 r OUTLINE - - HOLES Q 27 27 7 g DRILL 3 mmm Vi •2 2 FOR DSW ONLY 32 32 32 32 ft T w 5 DRILL K Y Z 8 2-UM- 2 HOLES 1 6 * 3 £ DRILL ^- e-i ?*> - ft % t 4 HOLES 1? 3 13 4 2“ 4 £ O 16 ' f2 ,29 e DRILL 1 © t l | u : 3 2 4 32 2 4 \ 0 HOLES 4 VIEW SHOWING ASSEMBLY OF CL % J HARDWARE FOR SURFACE MTG ; I . 31 ^ > 15 ^ CUTOUT MAY REPLACE ON STEEL PANELS. Z-_ l e I 16 32 DRILLED HOLES 4B mlgerci 32 23 ; tik_ j LL i -o 32 i i 4 O * n i irTTTr ? 5 c 245 2 5 > PANEL DRILLING FOR 8 8— SURFACE MOUNTING 5I PANEL DRILLING FOR SEMI-FLUSH MOUNTING (FRONT VIEW) ft (FRONT VIEW) * ft L F/g. 30. Dimensions for DS-63,-65 one/ -66 series mefers o 2 ! o* is? -3 BJ o i m X 3 stji PANEL LOCATION SO co N SEMI FLUSH SURFACE r- 6 - “ DRILL HOLES MTG M7G 4 C \ 5 r * m 5 : 4 DRILL 33 \ I 44 Sw M I “ 20 6 11 rj 27 " I r 5 —8 8 16 = 2 2 HOLES 32 32 32 T II 13 15 17 19 * 32 SCREW JO . L JL I - G-& J§T - o A { OR STUD) 1 f ooooo a; • ' 32 VI m f 51 e ©i 8 CO ooooo I 16 . - A Os 12 14 16 18 20 © . T 3° • 3" : I# SO l i 2 4 ( 4 o If ‘ Q CO 5” -g DRILL 3 CO FOR OSM a T* S* K Y Z 3 4 HOLES a. O DSMW MODEL sir 3" S 52 oo ONLY -5‘ i 4 c? -18 STUDS < > FOR : * - - ^ SURFACE & A 2 t i < i - A M 4 “ < U| 2- W MTG - 32 * 15 8“ 1 7-. “ 7“ tS Ti 5 -25” 7— 7-z- m 3 - ; 32 2 8 * . • ? \ 1 8 i ’ m 32 4 1Z3 16“ 5 so * UZZ \U 56 l 23" < CO 13 5 7 9 lo 4- 5” -to4K 10 30 SCREW : 32j- 16 " -* : { 1,15“ O GO OOOOO r iio iS? OR- STUD FOR O owe DSW a DSMW-69 t I ooooo * 7 A i ? x 7 I ' ! x m 2 4 6 8 IO 9K 11 f ONLY GO - V? - PANEL DRILLING FOR SEMI- FLUSH Ti ff ! NUMBERING OF STUDS * " * 4 4 l +i+i« i+ 1 ** 4 GO x MTG MTG (FRONT VIEW ) ) 5 KT 32|- C * 2 CFRONT VIEW - 3 SCREW 3* C3 ~ DRILL 3 HOLES CUTOUTS m. ^T MAY RE ~c FOR DSW a DSMW -69 ONLY PLACE - 5» FOR DSW a DSMW 69 ONLY OUTUNE DRILLED SO - HOLES PANEL DRILLING FOR SURFACE MTG 4 ( VIEW) m PANEL FRONT CASE 3“ !O:- * - > GO t . -iS^STOD Q ^ % > - - a5 m so GO VIEW SHOWING ASSEMBLY OF 3 o HARDWARE FOR SURFACE MTG . o : O ON STEEL PANELS • - SO '•4 -3“— of- - •rT* - - • t V: *o <=> GO Fig. 37. Dimensions for DS-6-4,-67 end -69 series mefers to CO CO M - •f c