Features

Software based design

Instantaneous/Definite time selection

Wide setting range

Wide auxiliary supply

Principle of Operation:

The sensing Voltage is applied to the input terminals of the relay. The applied voltage is amplified and fed to a Voltage Comparator. Output of the comparator is applied to the processor. The Program residing in the CPU performs the function of measurement and extends a trip signal after the set time delay is reached. The Relay contacts are self reset type and indications are latched, RESET button provided on the front of relay to clear these latched indications. TEST button is provided to test the relay contacts for trip and alarm circuits.

Application:

Earth fault protection in transformer generator motor and capacitor banks.

Description

Ratings

Voltage rating	63.5V / 110V AC
Auxiliary supply	30V DC (20V to 60V DC) 80 to 260V AC / DC

Settings:

Voltage setting	2.5 to 80% in steps of 2.5%
Definite time	0.1 to 25sec in steps of 0.1sec.

Over Load Rating:

Voltage input	2 times Rated continuous

Burden:

Voltage input	Less than 2VA at Rated
Auxiliary supply	Less than 2W (Non Operated) Less than 5W (Operated)

Accuracy:

Operating value	±5%
Operating time	± 5% or ± 30msec
Instantaneous Time	Less than 40msec

Contact Ratings:

Contacts 1 & 2	5A at 24V DC / 230V AC

Mechanical Design :

Weight	Appx. 500 gms
Case Size Fascia	96mm sq, depth of 105mm
Installation	Flush mounting
Panel cutout	92mm x 92mm

Standard Compliance

Accuracy test	IEC 60255-3
Insulation test	IEC 60255-5

Contact Durability :

Unloaded contact	1,000,000 Operations.
Loaded contact	00,000 Operations

Ordering Information

Voltage rating	63.5V / 110V AC
Relay type	JRV 962
Auxiliary supply.	30V DC 80V to 260V AC / DC

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JRV 962 Neutral displacement relay

Features

Principle of Operation:

Application:

Description