VCB
2
CUSTOMER SPECS: 1. Breaker Particulars (a) Circuit breaker type Porcelain Clad VCB Service Outdoor (b) Voltage, phases and frequency 33 kV, 50 Hz, 3 Ph (c) Rated operating duty O – 0.3s min – CO – 3 min - CO (d) Rated current at reference ambient temperature A 400 (e) Short time current withstand for 1 sec duration kA (rms) 25 (f) Operating mechanism type Motor Charged spring manual trip & close facility to be provided (g) Minimum no. of auxiliary contacts 6 NO, 6 NC (h) Withstand test voltage (i) One minute power frequency kV (rms) 70 (ii) 1.2/50 sec impulse kV (peak) 170
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Vauum CB
Transcript of VCB
CUSTOMER SPECS:
1. Breaker Particulars
(a) Circuit breaker type Porcelain Clad VCB
Service Outdoor
(b) Voltage, phases and frequency 33 kV, 50 Hz, 3 Ph
(c) Rated operating duty O – 0.3s min – CO – 3 min - CO
(d) Rated current at reference ambient temperature
A 400
(e) Short time current withstand for 1 sec duration
kA (rms) 25
(f) Operating mechanism type Motor Charged spring manual trip & close facility to be provided
(g) Minimum no. of auxiliary contacts 6 NO, 6 NC
(h) Withstand test voltage
(i) One minute power frequency kV (rms) 70
(ii) 1.2/50 sec impulse kV (peak) 170
(i) Auxiliary control voltage(i) For closing / tripping coil 110 V DC
(ii) For spring charging motor 240 V AC
(iii) For space heaters and lighting 240 V AC
j Paint Shade 632 of IS 5
lL/R Switch & TNC Switch to be provided.
