Name: OVER FREQUENCY RELAY JRF 014 - Sai Creations
Availability: InStock

Features

Two stage of frequency protection

Digital display of line frequency

Draw out case 144×144 mm

Principle of Operation:

The JRF 014 is 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 operating 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 in case of under frequency then relay extends a trip signal after an operating time.

Application:

The relay provides time graded over / under frequency protection. Used in industrial plants having captive power generators requiring under frequency protection.

Description

Ratings

Frequency rating	50 Hz
Voltage rating	1) 63.5V AC 2) 110V AC
Aux. Supply	1) 20 to 60V DC 2) 75 to 150V AC / DC 3) 175 to 265V AC / DC

Settings:

Definite time	0.1 to 20.0s in steps of 0.1s
Setting range Ch1	45 to 55Hz in steps of 0.01Hz
Setting range Ch2	45 to 55Hz in steps of 0.01Hz
Dropout frequency	0.1 to 1.5Hz in steps of 0.1Hz
Low voltage blocking	75% of rated voltage
Evaluation time	5 Cycles

Over Load Rating:

Voltage input	2 times rated continuously

Burden:

Voltage input	0.2VA
DC Aux. Supply	Less than 10W

Accuracy:

Frequency measurement	±0.01Hz
Operating time	±2% or ±50ms whichever high

Contact Ratings:

Make & carry	10A at 230V AC / 24V DC
Maximum voltage	440V AC / 220V DC
Break capacity	2300VA

Contact Durability:

Unloaded contact	1,000,000 Operations
Loaded contact	100,000 Operations

Insulation:

2KV RMS, 50 Hz for 1 minute / 2.5 KV for 1 sec . Between all terminals and earth.
1 KV RMS, 50 Hz for 1 minute across open contacts .

Mechanical Design :

Weight	3 kgs.(Approx)
Case Size Fascia	Fascia 144×144 mm depth 232 mm
Installation	Flush mounting
Panel cutout	138mm x 138mm

Ordering Information

Relay type	JRFC 014
Voltage rating	1) 63.5V AC 2) 110V AC
Auxiliary Supply	1) 20 to 60V DC 2) 75 to 150V AC / DC 3) 175 to 265V AC / DC

Reviews

There are no reviews yet.

Be the first to review “OVER FREQUENCY RELAY JRF 014”

OVER FREQUENCY RELAY JRF 014

Features

Principle of Operation:

Application:

Description