Motor Protection Numerical Relay, you have a separate numerical relay for LV motor&HTmotor. |
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Motor Protection Numerical Relay, you have a separate numerical relay for LV motor&HTmotor. |
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  Feb 11 2008, 05:55 PM
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#1
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Junior Member  Group: Members Posts: 2 Joined: 22-April 07 Member No.: 3,191  |
you have separate numerical relay for LV motor &HT motor.Can you use the LV motor numerical relay for HT motor protection without any modificationHT motor protection
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Mar 21 2008, 05:09 PM
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#2
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Junior Member Group: Full Member Posts: 7 Joined: 19-March 08 Member No.: 4,399 |
I dont see any difference b/w LT and HT motor protection. I think same relay can be used following to be considered a) If u use the low imp. scheme for earth fault then u may have to recalculate the stabilizing resistor value  Revision of the protection settings as per HT motor char. , fault currents at the busc) CT PT ration as per the new set up |
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