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DC Under Current Relay BCRD-U:

Ac supply is used as Aux. source. On connection of Aux. the relay energizes(contact changes from NC to NO) after delay of 3-5 sec. Now the system starts monitoring dc shunt current and de-activate the relay out put if current is less then set value for more than trip delay time.
The relay have amplifier for DC shunt current, have to detect the fault- have time delay and relay circuit to activate alarm / trip circuits.

Function:

BCRD-U relay is to detect DC under current situation and activate alarm / trip circuit.

Operating Principle:

Ac supply is used as Aux. source. On connection of Aux. the relay energizes(contact changes from NC to NO) after delay of 3-5 sec. Now the system starts monitoring dc shunt current and de-activate the relay out put if current is less then set value for more than trip delay time.
The relay have amplifier for DC shunt current, have to detect the fault- have time delay and relay circuit to activate alarm / trip circuits.

• Aux. Supply : 240 V (AC)
• Trip Current : 0 – 100%
• Output : 2 Change-over (Potential free)
• Sensing : Through Shunt 0 – 75 mV
• Power On Delay : 3 – 5 Sec. (Fixed)
• Trip Delay : 5 – 6 Sec. (Fixed)
• Indication : LED (Aux. Supply, Trip )
• Mounting : Rail /Panel
• Enclosure : ABS molded
• Dimensions : 60x70x130
• Reset : Manual

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