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3 Phase 4 Wiire with neutral solidly earthed system | Having :3 Nos. Cts and 1Nos. 3Phase PT | |||
3 Phase 3 wire with net1tral solidly earthed system | Having :3 Nos. Cts and 1Nos. 3Phase PT | |||
GENERAL PARTICULARS | METERING UNI T/PANEL | |||
Nominal System Voltage (kv) | 11 | 33 | ||
H ighest System Voltage (kv) | 12 | 36 | ||
H V Power freq. Wiih Stand Voltage For Primary Winding 1 min (Kv) | 28 | 70 | ||
H V Power freq. Wiih Stand Voltage For Secondary Winding 1 min (Kv) | 3 | 3 | ||
Impulse withstand voltage {kvp) | 75 | 170 | ||
PD metering voltage | 7.6 | 23 | ||
Rated Frequency (Hz) | 50 Hz | |||
CURRENT TRANSFORMER | POTENTIAL TRANSFORMER | |||
Rated Burden:2.5 10 30 VA | Rated Burden 10 to 100 VA | |||
Rated Primary Current 2.5 AMP to 800 AMP | Rated Primary Voltage : 11KV 33 KV | |||
na,oo Socondary current (AMP) : l AMP to 5Amp | Rated Secondary Voltage : 110 volt | |||
Rated Short Time Thermal Current: 3 KA To 25 KA for 1/3 second | Rated Voltage f actor : 1.2 cont â‚¢1.5 for 30 Second | |||
Accuracy class (IS/ IEC standard) : 0.2S ; 0.2 ; 0.5S ;0.5 ; 1.0 | Acc1trac.y class (IS/IEC Standard): 0.2,0.5,1.0 | |||
Rated Instrument Security Factor :Less than 5 | ||||