VACUUM INTERRUPTERS Vacuum Interrupters

Outstanding vacuum-related manu- facturing techniques of MEIDEN has completed high preformance and high-reliability vacuum interrupters.

Features

1. Simplified arc quenching method The spiral contact assures a high arc driving efficiency. 2. Simplified construction and high quality Since complete degassing and hermetical seal are processed in a vacuum furnace, vacuum degree can be maintained for a long time. 3. No evacuation tube Since manufacturing of vacuum interrupters using ceramics High ability development and outstanding vacuum technology envelopes is done in a vacuum furnace, no evacuation tube of Meidensha Corporation (“MEIDEN”) has estabilished high is necessary. voltage vacuum interrupters. MEIDEN developed a 145kV 4. Slim body Since new contact materials are developed, external dimen- vacuum interrupter unit for the first time in the world. sions are reduced.

Major Applications

· Vacuum circuit-breakers · Vacuum · Vacuum contactors · tap changers · Rail line circuit-breakers · Autoreclosers · Special duties, e.g. for multi-operation section switches

1 VACUUM INTERRUPTERS VACUUM INTERRUPTERS 2 Vacuum Interrupters

＊Vacuum Interrupters for Medium Voltage Class Vacuum Interrupters-Structure, Feature & Performance ＊ , Vacuum Interrupters have simple to its structure. Material of copper is used for VI s flanges. Therefore Vacuum Interrupters have IEC & ANSI Standard exellent on heat dissipation at load current and short circuitbreaking current.

GB Standard 1. Conducting rod 5. Ceramics envelope 1 2 3 4 5 6 7 8

2. Flange 6. Bellows shield

3. Shield 7. Bellows

4 . Contact and Electrode 8. Twist protection guide

MEIDEN is manufacturing the medium voltage class VIs which matches to the various specifications in the world.

Automatically forming equipment ＊Vacuum Interrupters for High Voltage Class MEIDEN developed and commercialized 72.5kV class vacuum interrupter for the first time in the world. MEIDEN has successfully developed a 145kV/40kA rating and turn into production. MEIDEN produces two types of electrode (Spiral & Axial Magnetic Field) and its material is pressed powder of Cr-Cu alloy. ＊Vacuum Interrupters for Customized Arrangement MEIDEN corresponds to size arrangement and review the specifications of VIs based on requirement. Spiral electrode AMF electrode Production of prottype VIs as well as test of short circuit breaking test, etc are possible. (Soft material) (Hard material) If customer would like to have new R&D and changing for now purches VI, Uniform-dispersion Spiral electrode is normally applied for economic and standard MEIDEN will be possible to test at our own test laboratory for customize arrengement. Cr material within Cu VCB/Swichgear of midium voltage class. MEIDEN manufactures soft electrode by using forming equipment for powder material. ＊Vacuum Interrupters- Manufacturing & Quality & Assurance All the Vacuum Interrupters assembly works are carried out in a clean room. AMF electrode is applied for high voltage class and capacitor VI contacts are soft and have excellent current-breaking bank. The electrode is hard and have excellent high voltage Each part is chemically cleaned, washed, dried, and then carried to the performance, because of their uniform-dispersion materials. performance. clean room. Vacuum Interrupter using ceramics envelopes has high MEIDEN is manufacturing high voltage VCB upto rated 168kV heat-resisting characteristics. Therefore, it enable to minimize the operating energy for circuit class, and at rated 72.5kV class. breakers, and it helps much compact size operating mechanism. Utilizing this advantage, degassing and hermetically sealing procsses are These VCB and Switchgear are using hard material on the vacuum interrupter, its electrode is this hard material. simultaneously carried out in a vacuum furnace. 1000 This simplified manufacturing process makes Vacuum Interrupters quality

stable. After brazing under vacuum, each Vacuum Interrupter is to be given ] a constant mechanical load and then inspected its dimensional variations. All data are automatically recorded under hgih quality control. Data recording and pass-fail judgment are automatically carried out. 100 Minimized contact pressure Inspection of materials supplied and process control at all stage and final inspection of vacuum degree of each vacuum interrupter ensure for quality assurance and a long service life. [kg f contact force Total Soft electrode MEIDEN applies a delivery criterion of ultra-high vacuum less than Hard electrode -4 10 5×10 [Pa], thus a service life of VI is 20 years. 12.5 25 50 Breaking current [kArms]

3 VACUUM INTERRUPTERS VACUUM INTERRUPTERS 4 Vacuum Interrupters

Vacuum Interrupters for <50Hz to 60Hz> Vacuum Interrupters for Load Break Rated Rated Power Rated Short circuit breaking current with Rated Rated Power Rated Short VI Type Voltage lightning frequency Current at least 30-40% DC component and Voltage lightning frequency Current circuit (Dia.-Style) impulse withstand Interrupter (Outdiameter-Style) impulse withstand making voltage Voltage voltage Voltage current

kV kV kV A 12.5kA 16kA 20kA 25kA 31.5kA 40kA 50kA kV kV kV A kApeak 7.2 60 20 630 M20QC 12/15.5 95 35 630 40 M01QC (φ52-A) (φ60-A) 24/27 125 60 630 40 M02QC 800/1250 M30RC (φ60-B) (φ94-A) 36/38 150 70 630 40 M03QC 1600/2000 M40SC (φ65-B) (φ94-A) Vacuum Interrupters for Auto- & Fault Interrupter Switch 2500/3150 M50TC Rated Rated Power Rated Short VI Type (φ110-A) Voltage lightning frequency Current circuit (Dia.-Style) impulse withstand breaking 12/15 75 28 630 M52QC M41QC* MA61RC** voltage Voltage current (φ65-B) (φ69-B) (φ94-B) 800/1250 M51RC kV kV kV A kA (φ82-B) 15.5/27 110/125 50/60 630 12.5 M52QC* (φ65-B) 1600/2000 M71SC M81SC (φ94-B) (φ110-B) 15.5/27 110/125 50/60 800 16 M72QC* (φ75-B) 2500/3150 M71TC M81TC MA131TC 38 150 70 630 12.5 M83QC* (φ110-B) (φ132-B) (φ150-B) (φ75-B) 17.5/24 95/125 38/50 630 M52QC* MA102RC** 38 150 70 800 16 MA93QC* (φ65-B) (φ94-B) (φ82-B)

800/1250 M72RC* M82RC* M102RC Vacuum Interrupters for Contactor Switch (φ75-B) (φ75-B) (φ94-B) Rated Rated Power Rated Short VI Type 1600/2000 M102SC Voltage lightning frequency Current circuit (Dia.-Style) (φ94-B) impulse withstand breaking voltage Voltage current 2500 M132TC M203TC kV kV kV A kA (φ120-B) (φ120-C) 6.6 45 16 400 4 5G-1 36/38 175 80 630 M83QC* M93QC* (φ52-A) (φ75-B) (φ94-B) 6.6 45 16 400 6 7.5G 800/1250 M123RC* (φ52-A) (φ94-B)

1600/2000 M163SC* Vacuum Interrupters for Mobile Railway Interrupter Switch (φ110-B) Rated Rated Power Rated Short Short VI Type Voltage lightning frequency Current circuit circuit (Dia.-Style) 2500 M203TCB* M253TC* impulse withstand breaking making (φ120-C) (φ132-C) voltage Voltage current current

52 250 90 1250/2000 MA285SC* kV kV kV A kA kA (φ132-B) 18/36 170 70(16.6Hz) 750(16.6Hz) at 18kV at 18kA 163SCM → → 72.5 325 140 1250/2000 MA317SC* MA467SC* MA507SC* 70(50/60Hz) 450(50/60Hz) 25(16.6Hz) 62.5(16.6Hz) (φ132-C) (φ132-B) (φ150-B) (φ150-B) at 36kV →20(50/60Hz)

* : Additional external insulation necessary 1,000,000 M31QC **: Capacitor bank switching ＊Diameter M52QC M41RC Interrupter types and diameters are shown in the tables. 100,000 M51RC & M61RC → M71SC M81TC MA131TC 10,000

1,000

100

Number of oparations [times] 10

1 0.1 1 10 100 Breaking current [kA (r.m.s)] → Style A Style B Style C ELECTRICAL LIFE (12/15kV Class Vacuum Interrupter)

5 VACUUM INTERRUPTERS VACUUM INTERRUPTERS 6 ThinkPark Tower, 2-1-1, Osaki, Shinagawa-ku, Tokyo, 141-6029 Japan www.meidensha.com Overseas Offices & Group Companies China Myanmar Meiden Zhengzhou Electric Co., Ltd. Thai Meidensha Co.,Ltd. Yangon Branch Meidensha (Shanghai) Corporate Management Co., Ltd. Singapore Meiden Hangzhou Drive System Co., Ltd. Meiden Asia Pte. Ltd. Shanghai Meidensha Changcheng Switchgear Co., Ltd. Meiden Singapore Pte. Ltd. Meiden (Hangzhou) Drive Technology Co., Ltd. Thailand Hong Kong Thai Meidensha Co., Ltd. Meiden Pacific (China) Ltd. Meiden Electric (Thailand) Ltd. India Vietnam Meiden India Pvt. Ltd. Meiden Singapore Pte. Ltd. Hanoi Office Meiden India Pvt. Ltd. Ahmedabad Branch Philippines Indonesia Meiden Singapore Pte. Ltd. Philippines Branch P.T. Meiden Engineering Indonesia United Arab Emirates Korea Meiden Asia Pte. Ltd. Dubai Branch Meiden Korea Co., Ltd. Germany Malaysia Meiden Europe GmbH. Meiden Malaysia Sdn.Bhd. Tridelta Meidensha GmbH. Meiden Metal Engineering Sdn. Bhd. The United States Meiden America, Inc. Meiden America Switchgear, Inc. Specifications in this catalog are subject to change without notice. GB46-3201BXX00-0000X As of Nov.,Jan., 20182020 The seller shall not be liable for incidental damages, consequential 2022018-1ME0-11ME（（0.0V4L）0.5L0.0L damages including loss of profit and special damages.