Frequency relay having two independent stages of over / under frequency with definite time delay
₹36,018.84
Product Code: JRF 014
Time line :Products will be shipped within 3 weeks from the date of order
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Product Description
Features
- Two stage of frequency protection
- Digital display of line frequency
- Draw out case 144x144 mm
APPLICATION
The relay provides time graded over / under frequency
protection. Used in industrial plants having captive
power generators requiring under frequency protection.
PRINCIPLE OF OPERATION
The Realy, JRF 014, is a Microprocessor based frequency
relay The relay can be configured for 2 stage under
frequency relay, two stage over frequency relay or Under
/ Over frequency relay. The relay's operat ing time can be
programmed. The relay measures line frequency and if it
exceeds the set threshold in case of over frequency or if
it is less than set threshold then relay extends a trip
signal after an operating time.
Ratings
Settings
OVER LOAD RATINGS
Burden
Accuracy
Frequency rating :
50 Hz
Voltage rating :
63.5V AC
110V AC
110V AC
Aux. Supply :
20V to 60V DC
75V to 150V AC/DC
175V to 265V AC/DC
75V to 150V AC/DC
175V to 265V AC/DC
Definite time :
0.1 to 20.0s in steps of 0s
Setting range CH1 :
45 to 55Hz in steps of
Setting range CH2 :
45 to 55Hz in steps of 0.01Hz
Dropout frequency :
0.1 to 1.5 Hz in steps of 0.1 Hz
Low voltage blocking :
75% of rated voltage
Evaluation time :
5 Cycles
Voltage input :
2 times Rated continuous
Voltage input :
0.2 VA
DC Aux. Supply :
Less than 10 W
Operating value :
±0.01Hz
Operating time :
±2% or ±50ms whichever high
2 N/0 Separte for Stage 1&2
2 N/0 Separte for Stage 1&2
Contact Ratings
Contact Durability
Insulation
Make & carry :
10A at 230V AC / 24V DC
Maximum voltage :
440V AC / 220V DC
Break capacity :
2300VA
Unloaded contact :
10,000 operations min
Loaded conatct :
100,000 operations min
- 2KV RMS, 50 Hz for 1 minute / 2.5 KV for 1s . Between all terminals and cases
- 1KV RMS, 50 Hz for 1 minute across open contacts as per IEC 60255-5
Weight :
3 kgs ( Approx )
Case Size :
Fascia 4sq mm, depth of 232 mm
Installation :
Flush mounting
Panel cutout :
138 x 138 mm
TERMINAL DIAGRAM
