India
If a fault occurs at the distribution end and the respective protective relay operates but the corresponding CB fails to operate then the system may have to face catastrophic consequences. JRC-154 is a instantaneous and definite time over current relay that also monitors the non-potential contacts of the downstream protective relays. The relay is designed to trip the feeder end CB if the protective relay at the distribution end operates but its corresponding CB fails to operate.
Features:
Wide OC setting range
Wide time setting range
Fast reset time
High drop-off/pickup ratio
Application:
JRC 154 local breaker backup relay, is used to check the operation of distribution end circuit breakers and to trip the feeder end circuit breaker if the distribution end circuit breaker fails to trip.
Burden:
Current input : 0.2VA Per phase (at Rated 5A), 0.05VA per Phase (at Rated 1A)
Less than 5W(Non-Operated), Less than 10W (Operated)
Aux. Supply :
1) 20 to 60V DC
2) 75V to 150V AC/DC
3) 175 to 300V DC /185 to 250V AC
Insulation:
(1) 2KV RMS, 50 Hz for 1 minute / 2.5 KV for 1 sec Between all terminals and earth.
(2) 1 KV RMS, 50 Hz for 1 minute across open contact as per IEC 60255-5
With almost more than a decade of experience and rich technological expertise, we are able to offer a precision designed range of Electrical Protection Instruments.
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