UNDER / OVER FREQUENCY RELAY JRF 014

OVERVIEW

    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.

UNDER / OVER FREQUENCY RELAY JRF 014

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.

 

SPECIFICATIONS

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 :

 

:

2 N/O Separte for Stage 1&2

     

Contact Ratings:

Make & carry

:

10A at 230V AC / 24V DC

Maximum voltage

:

440V AC / 220V DC

Break capacity

:

2300VA

     

Contacts Durability :

Loaded contact

:

10,000 operations minimum

Unloaded contact

:

100,000 operations minimum

     

Insulation:

  1. 2KV RMS, 50 Hz for 1 minute / 2.5 KV for 1 sec .
    Between all terminals and cases as per IEC 60255-5.
  2. 1KV RMS, 50 Hz for 1 minute across open contacts
    as per IEC 60255-5
 

Mechanical Design:

Weight

:

3 kgs.(Approx)

Case Size

:

Fascia 144x144 mm depth 232 mm

Installation

:

Flush mounting

Panel cutout

:

138mm x 138mm

     
 
 
 
 
 

UNDER / OVER FREQUENCY RELAY JRF 014

DOWNLOADS

UNDER / OVER FREQUENCY RELAY JRF 014

Catalogues:

DOWNLOAD

Operating Manual:

DOWNLOAD

 

UNDER / OVER FREQUENCY RELAY JRF 014

 

ORDERING INFO.

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

 

UNDER / OVER FREQUENCY RELAY JRF 014

 

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