INVERSE TIME CURRENT RELAY JRC 068

OVERVIEW

    Features

  • Software based design
  • Programmable time current characteristics
  • Choice of four curves
  • Wide setting ranges
  • Draw - out case

Application:

The relay provides time graded phase and earth fault
protection of Generators, Transformers, Feeder, capacitors etc.,

INVERSE TIME CURRENT RELAY JRC 068

Principle of Operation:

The relay measures the line current from each of the phases and if it exceeds the set threshold, then the relay extends a trip signal after an operating
time. The relay's operating time is determined by selecting one of the four inverse time characteristics. The relay has facility to active / inhibit the high set
protection feature. The relay output contacts are self reset / Hand reset type. Relay operation without any fault current can be test facility.

 

SPECIFICATIONS

Ratings:

Current rating ( In )

:

1A / 5A

Aux. Supply

 

:

1) 20 to 60V DC
2) 75 to 175V AC / DC
3) 175 to 300V DC
    185 to 250V AC

     

Settings:

Operating characteristics

 

:

 

1) 3.0s Normal Inverse
2) 1.3s Normal Inverse
3) 1.5s Very Inverse
4) 0.8s Extremely Inverse
5) 0.6s Extremely Inverse

Phase O/c (IDMT)

:

50 to 200% in steps of 10% or
20 to 140% in steps of 10%

Earth fault (IDMT)

:

5 to 80% in steps of 5%

TMS

:

0.1 to 1.0 in steps of 0.01
(separate for O/c & E/F)

Phase Hi-set

:

200 to 3200% in steps of 200%

Earth fault Hi-set

:

50 to 800% in steps of 50%

 

Burden:

Current input

:

0.2VA per phase (rated 5A)
0.05VA per phase (rated 1A)

Aux. Supply

:

Less than 8W (Non operated)
Less than 10W (Operated)

     

Contact Ratings:

Trip / Alarm

:

10A at 24V DC / 230V AC

     
 

Accuracy:

Operating value

:

105% to 120% of setting

Drop-off / pick-up

:

Between 80% to 95%

Operating Time

:

±5% or ±30ms whichever is higher

High set operating value

:

±5% or ±30ms whichever is higher

High set operating time

:

Less than 30ms @ 2 times
current setting

Reset Time

:

160ms to 180ms

     

Contact Durability :

Loaded contact

:

10,000 operations min.

Unloaded contact

:

100,000 operations min.

     

Over Load Rating

Current input

:
:
:

times rated continuous
20 times rated for 3s
40 times rated for 1s

 

 

 

Mechanical Design :

Weight

:

2500 gms. (approx)

Case Size Fascia

:

144sq mm, depth 232mm

Installation

:

Flush mounting

Panel cutout

:

138mm x 138mm

     
 

Standard Compliance:

Accuracy test

:

IEC 60255-3

Insulation test

:

IEC 60255-5

     
 

INVERSE TIME CURRENT RELAY JRC 068

 

DOWNLOADS

BATTERY EARTH FAULT RELAY JRC 082

Catalogues:

DOWNLOAD

Operating Manual:

DOWNLOAD

 

INVERSE TIME CURRENT RELAY JRC 068

 

ORDERING INFO.

Ordering Information:

Relay type

 

:

 

JRC 068 (3O/c + E/F)
JRC 067 (3O/c + E/F)
JRC 066 (2O/c + E/F)
JRC 066P (3O/c)
JRC 064 (2O/c)
JRC 062 (E/F)
JRC 062P (1O/c)
JRC 054 (3O/c + E/F)
JRC 053 (2O/c + E/F)
JRC 053P (3O/c)
JRC 052 (2O/c)
JRC 051 (E/F)
JRC 051 (1O/c)
JRC 043 (3O/c)
JRC 043 (2O/c + E/F)

Current rating

:

1A or 5A

Reset type

:

Self Reset or Hand Reset

Extremely Inverse Curve

:

0.8s EI or 0.6s EI

Auxiliary Supply

:

20 to 60V DC or
75 to 150V AC/ DC or
175 to 300V DC (185 to 250V AC)

 

 

 

 

INVERSE TIME CURRENT RELAY JRC 068

 

A WebSpotLight creation by Netsoft.