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

--------------------------------------------------------------------------------------------------------------------------------------------------

1. General

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.

2. 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

3. 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.

4. Recloser feature

4.1 Outline of recloser:

The RCW series vacuum recloser is mainly combined with integration terminal, current transformer, permanent magnetic actuator and its recloser controller.

4.2 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.

4.3 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

T to T* -----Terminal to terminal creepage

T to G/E* -----Terminal to ground/earth creepage