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Category Smart Power Distribution > Low Voltage > EMPR Date
Question External CT connectio
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Dear Sir/Madam,

I had used DMP 0.5 ~ 6 relay model for a Motor of 90 KW with external CT of 400/1 and set the CT rating at 27 ( for Overload of 170 amps with assumation of 27 x 6 = 170 Amps),but when motor starts the current display show no current and also when check no protection also i.e with even set current of 18 amps the motor was not tripping, please suggest the solution.

With Regrds,

Anil Tandon
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Dear Anil Tandon,

Thank you for using LSIS products.
In this case, output is too low as you use external CT of 400/1.
If you use CT of 400/5 it will be resolved.

Best regards
Amy
Global support team.
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download of detail page
Category Smart Power Distribution > Low Voltage > EMPR
Date
Question External CT connectio
Dear Sir/Madam,

I had used DMP 0.5 ~ 6 relay model for a Motor of 90 KW with external CT of 400/1 and set the CT rating at 27 ( for Overload of 170 amps with assumation of 27 x 6 = 170 Amps),but when motor starts the current display show no current and also when check no protection also i.e with even set current of 18 amps the motor was not tripping, please suggest the solution.

With Regrds,

Anil Tandon
------------------------------------------------------------------
Dear Anil Tandon,

Thank you for using LSIS products.
In this case, output is too low as you use external CT of 400/1.
If you use CT of 400/5 it will be resolved.

Best regards
Amy
Global support team.
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