vacuum circuit breakers
Item:ZW20-12C
ZW20-12C pole mounted circuit recloser vacuum circuit breakers
The main difference between RCW series recloser and ZW20-12C recloserRCW38N
| Type | Insulation structure | Main Insulation medium | Weight |
| RCW | Live tank | Soild insulation | 12kV less than 85kg |
| ZW20-12 | Dead tank | Gas insulation | Only 12kV type but more than 185kg |
ZW20-12 model outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in12/17.5/24kV, 50/60Hz power system. It is applicable for substations, industry and mining, urban and rural electricity power networks, especially applicable in occasions with fre quen t operation and automatic power distribution network. It accords with the standards of IEC62271-100 & GB1984: AC high voltage circuit breaker, IEC60694 & G B/T11022: HV General technical requiremen t of switch and control apparatus.
1. Service environment
a) Air temperature: Maximum temperature: +85℃; Minimum temperature:-45℃
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude:2500mor more higher.
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
2. Offering
With optional classes for rated current range:
For 12kV, with630A, 20kA Breaking capacity. 800A, 20kA capacity, and1000A, 25kA.
With optional classes for installation styles:
Single phase, vacuum recloser and Three phase, vacuum recloser.
With optional relay protection curves for user choice:
Ph.OC1: Current Protection
Ph.OC2: limit current protection
Ph.OC3: over-current protection
IDMTOC: inverse-time overcurrent protection
SEF: Sensitive earthing fault overcurrent protection
Reclose: reclosing
Recl.ACC: Inter-phase Closing acceleration protection
Manu.ACC: Inter-phase charging protection
Overload: Overload protection
NSPTOC1: some Inter-phase negative sequence overcurrent
NSPTOC2: Inter-phase negative sequence overcurrent protection, Sec.
PH.OV: over-voltage protection
PH.UV: Low voltage protection
Resi.OV: zero sequence overvoltage protection
Hi.Gas: heavy gas protection
Hi.Temp: High temperature protection
Com.Val: common values
More relay functions can be customized.
With optional choice by locally or remotely.
With optional communication protocols & I/O port for user choice:
RS-232 and RS-485 ports supporting.
DNP3.0 communication protocol support(*).
Modbus communication protocol is optional(*).
IEC 60870-5-101 communication protocol support.
IEC 60870-5-104 communication protocol support. (*).
The recloser can communicate through GPRS(Or GSM) modem with English or Chinese languege (*).With optional functions for user.
Rated currents, System phase current.
Rated voltages, System phase voltage& secondary low voltage power supply voltage.
Frenquency, power(kWh), reactive power(kVarh),power factor .
With optional reclosing interval for user pre-program:
Reclosing times setting support.
Dead time setting support.
With events recording function:
SOE 1000 operations record.
Fault record and normal operation record.
Note: (*) mean should customized by manufacturer if needed.
3. Recloser feature
3.1 Outline of recloser:
The RCW series vacuum recloser is mainly combined with integration terminal, current transformer, permanent magnetic actuator and its recloser controller.
3.2 The recloser tank feature:
The Vacuum recloser tanks are manufactured from 304 grade stainless steel and are powder coated
a light grey colour.
Whole recloser IP65 protection class, equipped with a auxiliary plug to connect with recloser controller by control cable, Diameter Max22mm,6 Mlength(8Mfor special). .
Its can performance serve more than 20 years long term under heavy duty circumstance.
3.3 The recloser vacuum embedded pole feature:
The recloser’s vacuum interrupter insert in an epoxy resin solid pole, and external coated with a high reliable, stable material:Fluorocarbon silicone rubber (γ-trifluoro propyl methyl polysiloxane)
With excellent electric insulation, weather resistance, ozone, biological inertia, can be stand under the long-term use in -55 ~ +200℃.
Creepage Distances of RCW
| Description | 12kV BIL 75/95kV |
| T to T* | 380/400mm |
| T to G/E* | 380/400mm |
A:Ezitown has Alibaba trade Assurance,100% refundable if any quality or delivery problem.
Q:How to return the goods if meet any problem ?
A:we have DHL and Fedex account for return goods.buyer no need to pay any shipping cost for returning. Can contact our salesman to operate.
Q:Why Ezitown price is competitive, and quality seems rather good ?
A:because we have been manufacturing more than 20 years, we know what price and Quality buyer can sell well in market.the wholeseller have suitable profits
Q:Can we order many items and make combine shipment ?
A:we can combine many items,and deliver by courier/sea/land/air etc. pack well.
Q:Can I order the cabinet/enclosure/box and the wiring material from you or other supplier,you make wiring and assembly for us ?
A:we have egineering, wiring and assembly team for low voltage/medium voltage/high voltage/DC control .can make drawing and diagram to confirmation and proceed the assembly.we have unite nation project in regular assembly.
Q:How can I make our own brand for my order ?
A:we supply OEM service if order quantity meet the OEM MOQ , contact to know the exactly quantity for your item
Q:What is the delivery if I make payment ?
A:Almost all items we keep in stock.and we have many order every day , We need 1-3 working days to packing and make delivery.OEM packing will be longer time.
Q:Can we visit your factory or office ?
A:we always welcome customer visit us, let me know the schedule, we will arrange.
