Earth Leakage Relay (SETTING Range 0.3 To 1.8A)
₹7,207.20
Product Code: JRC 172
Time line :Products will be shipped within 3 weeks from the date of order
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Product Description
Features
- Solid state reliability
- Built in Test facility
- Very low primary current sensing
- Core balance current transformer supplied along with the unit
APPLICATION
The relay used for protection of LV/MV distributton systems requiring very high sensitivity for earth faults.
PRINCIPLE OF OPERATION
The relay measures the earth leakage current from the CBCT and if it exceeds the threshold, it extends a trip signal after the operating time.
Ratings
Operating characteristics
OVER LOAD RATING
Burden
Accuracy
Relay setting JRC 172 :
0.3A to 1.8A in steps of 0.1A
Definite time setting :
0 - 1.5 sec in steps of 0.1sec
Operating time Instantaneous :
Less than 40 milli seconds
Definite time setting :
0 - 1.5 sec in steps of 0.1sec
Over load continuou :
Withstands continuous primary fault current of 400 A.
Short time :
Withstands primary fault current of 1200A for 10seconds
Aux. Supply :
Less than 5W
Drop – off / pick – up :
Between 80% to 95%
Operating time :
+/- 5% or +/- 30ms whichever high
Contact Ratings
Contact Durability
Insulation
STANDARD COMPLIANCE
TRIP / ALARM C/O :
5A at 24V DC / 230V AC
Loaded conatct :
10,000 operations min
Unloaded contact :
100,000 operations min
- 2 KV RMS,50 Hz for 1 minute/2.5KV for 1sec between all terminals and case
- 1 KV RMS, 50 Hz for 1 minute across open contacts as per IEC 60255
Type :
JRC 172 Flush Mounting
Panel cutout dimensi:
43 X 91 mm (WxH)
Accuracy Test :
IEC 60255-151
Insulation Test :
IEC 60255-27
Ordering Information
Relay rating type :
JRC 172
Aux. Supply :
110V AC, 220V AC
Inner diameter of CBCT :
70mm, 100mm are standard, Customiza�on of CBCT is applicable.