<p>Section Cover Page Section 26 27 14 Main Distribution Centre 2010-11-01 Metering</p><p>Use this Section to specify requirements for metering installed in main distribution centres specified in the following sections:</p><p>Section 26 18 36 - Fused Main Distribution Centre. Section 26 18 37 - Moulded Case Main Distribution Centre. Section 26 18 38 - Industrial Air Circuit Breaker Main Distribution Centres.</p><p>This Master Specification Section contains:</p><p>1. This Cover Sheet</p><p>2. Specification Section Text:</p><p>1. General 1.1 Related Requirements 1.2 Delivery, Storage and Handling</p><p>2. Products 2.1 Analog Metering 2.2 Digital AC Metering System 2.3 Current and Potential Transformers</p><p>3. Execution 3.1 Installation</p><p>BMS Basic Master Specification Alberta Infrastructure Page 0 Master Specification System Section 26 27 14 Main Distribution Centre Plan No: Metering Project ID: Page 1</p><p>1. General</p><p>1.1 RELATED REQUIREMENTS</p><p>.1 Submittal Procedures: Section 01 33 00. .2 LEED Requirements: Section 01 35 18. .3 Waste Management and Disposal: Section 01 74 19. .4 Electrical General Requirements: Section 26 00 10. .5 Electrical Operation and Maintenance Data: Section 26 01 10. .6 Testing, Adjusting, and Balancing of Electrical Equipment and Systems: Section 26 08 10. .7 Fused Main Distribution Centre: Section 26 18 36. .8 Moulded Case Main Distribution Centre: Section 26 18 37. .9 Industrial Air Circuit Breaker Main Distribution Centres Section 26 18 38.</p><p>1.2 DELIVERY, STORAGE AND HANDLING</p><p>.1 Separate waste materials for [reuse] [and] [recycling] in accordance with Section 01 74 19 - Waste Management and Disposal.</p><p>2. Products</p><p>2.1 ANALOG METERING</p><p>.1 Voltmeter:</p><p>.1 Type: [AC] [ ] 150 volt full scale deflection. .2 Size: [115] [ ] mm [square] 250° scale arc. .3 Accuracy: [One] [ ] per cent. .4 Calibration: [0 - 750] [ ] volts, zero left. .5 Mounting: [Flush] [Surface]. .6 Selector Switch: [4] [7] [ ] position.</p><p>.2 Ammeters:</p><p>.1 Type: [AC] [ ] 5 Ampere full scale deflection. .2 Size: [115] [ ] mm [square] 250° scale arc. .3 Accuracy: [One] [ ] per cent. .4 Calibration: [0 - 300] [ ] Amperes. .5 Mounting: [Flush] [Surface]. .6 Selector Switch: [4] [ ] position.</p><p>2010-11-01 BMS Version Section 26 27 14 Main Distribution Centre Plan No: Metering Project ID: Page 2</p><p>.3 Triplex Ammeters:</p><p>.1 Type: [AC] [ ] 5 Ampere full scale deflection with: .1 Triplex thermal demand. .2 Instantaneous readout for each phase. .2 Size: [115] [ ] mm square, 250° scale arc for each unit. .3 Accuracy: [±1] <3 per cent. .4 Calibration: [0 - 600] [ ] Amperes. .5 Mounting: [Flush] [Surface].</p><p>2.2 DIGITAL AC METERING SYSTEM</p><p>.1 Provide a microprocessor based digital AC metering system capable of providing following electrical measurements:</p><p>.1 Volts on each phase. .2 Current on each phase. .3 Frequency. .4 Power factor. .5 Kilo-Volt-Amperes. .6 Kilowatts. .7 Total MWH. .8 Programmable KW set point[s] with dry contact relay output[s]. .9 KW hour storage for [24] [ ] hours. .10 Historic minimum and maximum data for all measured parameters. .11 RS232-C output.</p><p>.2 Technical Features:</p><p>.1 Display: 20 character alphanumeric [10] [ ] mm high.</p><p>.2 Readout: two fields:</p><p>.1 Field 1: Volts and amperes for phases A, B, and C or average selectable by front panel button.</p><p>.2 Field 2: Any one of KVA, KW, PF frequency or MWH, or automatic sequence of all selectable by front panel button.</p><p>.3 Display update rate: every [3] [ ] seconds.</p><p>2010-11-01 BMS Version Section 26 27 14 Main Distribution Centre Plan No: Metering Project ID: Page 3</p><p>.4 Control: 4 buttons to provide the following operating modes:</p><p>.1 Auto sequence. .2 Non-sequence. .3 Display maximum. .4 Display minimum. .5 Reset field parameters.</p><p>.5 Output:</p><p>.1 RS232-C serial output for [video terminal] [printer] [modem] connection. .2 Baud rate: 300 to 9600 field programmable.</p><p>.6 Accuracy:</p><p>.1 One per cent for:</p><p>.1 Voltage .2 Amperes.</p><p>.2 One Hertz for frequency.</p><p>.3 Three per cent for:</p><p>.1 KVA. .2 KW. .3 MWH.</p><p>.7 Alarm Contacts:</p><p>.1 Set Point: adjustable for when measured load exceeds setting. .2 Output: form C dry contacts, 120 volt, 5 Ampere.</p><p>.8 Range of Operation:</p><p>.1 Voltage: 120, 208, 480, 600 volts, field programmable.</p><p>SPEC NOTE: Potential transformers required when voltage exceeds 208 volts.</p><p>2010-11-01 BMS Version Section 26 27 14 Main Distribution Centre Plan No: Metering Project ID: Page 4</p><p>.2 Ampacity: 10 to 9,999 amperes field programmable.</p><p>SPEC NOTE: Current transformers required with 5 ampere output.</p><p>.3 Frequency: 50 to 70 Hertz. .4 Power Factory: 0.50 leading to 0.50 lagging. .5 Kilo-Volt-Amperes: 0 to 30,000. .6 Kilowatts: 0 to 30,000. .7 MWH: 0 to 3,000 repeated.</p><p>.9 Mounting: Panel mounted.</p><p>.10 Power supply: 100 - 130 volts AC 60 Hz.</p><p>2.3 CURRENT AND POTENTIAL TRANSFORMERS</p><p>.1 Current Transformers:</p><p>.1 Type: metering accuracy class. .2 Ratios: [600:5] [ ] Amperes. .3 Provide shorting bars for current transformer secondary.</p><p>SPEC NOTE: Choose instrument transformers and meters to yield 60% meter deflection at full projected demand load.</p><p>.2 Potential Transformers:</p><p>.1 Type: metering accuracy class. .2 Ratios: [600:120] [360:120] [ ] volts. .3 Mounting: Drawout compartment with HRC fuse on primary side.</p><p>SPEC NOTE: Provide test block for main distribution centre metering.</p><p>.3 Current Transformer and Potential Transformer Test Blocks: [10] [ ] pole, complete with [7] [ ] current transformer and [3] [ ] potential transformer poles.</p><p>.4 Test Plugs: [10] [ ] pin to match current transformer and potential transformer test blocks specified above.</p><p>3. Execution</p><p>3.1 INSTALLATION</p><p>.1 Install meters in meter section of Main Distribution Centre.</p><p>2010-11-01 BMS Version Section 26 27 14 Main Distribution Centre Plan No: Metering Project ID: Page 5</p><p>.2 Co-ordinate installation of current transformers and potential transformers with installation of instrument transformers for utility metering and protective relaying.</p><p>END OF SECTION</p><p>2010-11-01 BMS Version</p>