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Frequency Relays in Nagpur
Frequency Relays in Nagpur
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Numerical Under Frequency Relay
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Guaranteed operation :
– 10 + 55° C
Accuracy :
+ .03 Hz
Aux DC (without tripping relays) :
11 W for 4 stages
Operating voltage range :
33 to 135 V the relay is block below this limit
Frequency setting range :
39.00 to 70. 00 Hz in step of .1Hz
Aux Supply from external source :
1.5 VA max at 150 V
No of tripped stage :
2 for UFT -21 3 for UFT -31 4 for UFT- 41
AC voltage rating :
110,220 VAC
Burden :
Aux Supply from PT :
1.5 VA
More details...
AE
ARMO Electronics & Electricals (I)
Pratap Nagar, Nagpur, Maharashtra
8 Years
Numerical Under Frequency Relay
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Frequency Trend Relay
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Frequency Relays
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Frequency Trend Relay
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Operating voltage range :
66 to 135 35-to 135 V The relay is blocked below & above this limit
Frequency setting range :
39.0 to 60.0 Hz in step of 1 Hz
Reference frequency :
5 MHz
Accuracy :
.03 Hz at 50 Hz
Max reset time under &Overfrequency :
50 ms
No. of tripped stageUFTR -51 UFTR-41 UFTR-6 I :
4. Two of which have dfdt output One of which have dfdt output 4 No. of dfdt output
Reset ratio :
100% (Digital)
Tripping delay for dfdt stage :
5 cs to 9 cs unless stated set to 6 cs on delivery
Auxiliary supplyvoltage :
From PT 66 to 135 V External 35 to 135 of PT
Evaluation period for delivery dfdt stages :
26 52 mSunless stated set to 26 mS On
More details...
AE
ARMO Electronics & Electricals (I)
Pratap Nagar, Nagpur, Maharashtra
8 Years
Frequency Relays
Get Price Quote
Operations of the relay can be tested by means of a test, button which energies the output relays & LED’s after set time delay with the channels set to underover frequency operation. Access to the test push button requires removal of the front...
More details...
AE
ARMO Electronics & Electricals (I)
Pratap Nagar, Nagpur, Maharashtra
8 Years
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This Data was Last Updated on 11/05/2026
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