33kV RCWE auto recloser is an ecnomic vacuum version with reliable design for 30kV to 33kV or higher 34.5kV power distribution networks. It is silicone bushing type. Comply with IEC standard, and it is equipped with magnetic actuator mechanism, opening/Locking device, etc.
RCWE type 33kV auto circuit recloser is an ecnomic version ACR, which is designed for using voltage rating up to maximum 42kV level system.
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RCWE type 33kV auto recloser is ANSI/IEC standardized plus design products which is equipped with one magnetic actuator mechanism, opening/Locking device (RCWE type ACR without manual closing device) , 3 current sensors, max 3 voltage sensors, with more functional like protection curves + curves programble, coodination logics + logics programble, programble communication protocols, PC software, APP control tool, etc... with RWK352 controller,....
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RCWE type 33kV auto circuit recloser is a solid insulation reclosure with silicone rubber coating, without Sf6 GAS sealed. with high creepage design, higher insulation level, suit using for Maximum 42kV level sytem, BIL170kV/185kV/200kV.
It's vacuum interrupting technology, and IP55 IP protection class, it's a basic standard auto recloser...
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What is the different between 40.5kV auto recloser and 33kV auto recloser ???
Maximum system voltage >>> requires a higher insulation level to 40.5kV class auto recloser >>> creepage increasing >>> Clearance distance increasing >>> BIL increasing >>>Dimension Increasing
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ROCKWILL ® Supply special design manual closing device technology with own patent, It applied for normal and abnormal situation closing. It’s closing speed(time) comply with IEC62271-1111.
This function can offset from magnetic actuator fault which when actuator can’t work will cause the major accident.
Primacy incomer terminal (directly connect to interrupter reduce power lost)
Current transformer
(external modular design easy for quality control and maintenance)
Accuracy: ±0.2% Ratio:200/400/800-1
Capacity:2.5VA/5VA
Power frequency withstand of 25kV
and 70 kV for one minute.
Basic insulation level 95 kV and 170 kV
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 ℃.
Internal Voltage sensors
incorporated within the vacuum
interrupter module
Source-side or Load side
connections Eliminate external
voltage-sensing PTs
Note:
ROCKWILL ® supply special patent modular design mono-stable type magnetic actuator with two coils controlling. It’s the best design for vacuum circuit breaker.
● Main technical data
-Rated max voltage: 30kV up 33kV, 38kV to 42kV
-Rated current: 630A up to 1250A
-Rated frequency : 50/60HZ
-Power frequency withstand voltage: 70/80kV
-Lightning impulse withstand voltage(peak); 170/200kV
-Rated short circuit breaking current: 2.5/16/20/25kA
-Rated short current switching current(peak): 31.5/40/50/63kA
-Rated peak value withstand current: 31.5/40/50/63kA
-4S short time withstand current: 12.5/16/20/25kA
-Rated operating circulate: O-0.5S-CO-2S-CO-5S-CO
-Breaking current frequency under rated short circuit: 116 times
-Mechanism life: 10000 times
-Secondary loop 1 min power frequency withstand: 2.5kV
-Auxiliary voltage supply: 220Vac±20%
-Battery bank: 12Vdc×2×9AH
-Capacitor unit: 220Vdc
●Accessories of RCW
All above insulating components for BIL 200kV expanding using. Any question please contact with our engineer.
Upper voltage shield 3 pcs/set
● Service environment
1.Air temperature: Maximum temperature: +85℃; Minimum temperature:-45℃
2.Humidity: Monthly average humidity 95%; Daily average humidity 90% .
3.Altitude above sea level: Maximum installation altitude: 2500m or more higher.
4.Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
5.Summer barometric 84.7Kpa(635mmHg) Winter barometric 85.6Kpa(642mmHg) Max wind speed 34m/s
6.Humidity of 13mg and Vapour Pressure 17mm/Hg. No frequent violent shake.
●Curret rating of Rcw E type 33kV auto recloser
With optional classes for rated current range:
Normal current 630A, Maximum up to 800A, 20kA. It can be expanded up to 1250A, .25kA .
●Protection relay of Rcw E type 33kV auto recloser
With optional relay protection curves for user choice:
Instantaneous over-current protection.
Timing over-current protection.
Negative sequence over-current protection.
Directional over-current protection(*).
Over-voltage protection./Under voltage protection.
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.(*).
IEC61850 communication protocol support(*).
The recloser can communicate through GPRS(Or GSM) modem with English or Chinese language (*).
With optional functions for user.
Rated currents, System phase current.
Rated voltages, System phase voltage& secondary low voltage power supply voltage. Frequency, power(kWh),
reactive power(kV arh), 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.
