33kV auto circuit recloser - Naten Brand

RCW^E 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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RCW^E type 33kV auto recloser is ANSI/IEC standardized plus design products which is equipped with one magnetic actuator mechanism, opening/Locking device (RCW^E 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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RCW^E 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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Naten ® 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:

Naten ® 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