Sai Creations

PROGRAMMABLE DIRECTIONAL INVERSE TIME CURRENT RELAY JRP 011

 0.00

Features

  • Software based design
  • Programmable time current characteristics
  • Choice of four curves
  • Selectable characteristic angle
  • Programmable directional / Non-directional element
  • Draw – out case

Principle of Operation:

The relay measures the line current from each of the phases and if it exceeds the set threshold, then 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 . Relay operation without any fault current is determined by trip test facility.

Application:

The relay provides time graded phase and earth fault protection of Parallel transformers, Transformer feeders, Parallel feeders, ring main system etc.,

20 in stock

Description

Ratings

Current rating ( In ) 1A / 5A
Aux. Supply 20 to 60V DC
75 to 175V AC / DC
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
Phase O/c (IDMT) 50 to 200% in steps of 10%
Earth fault (IDMT) 5 to 80% in steps of 5%
TMS (separate for O/c & E/F) 0.1 to 1.0 in steps of 0.01
Phase Hi-set 200 to 3200% in steps of 200%
Earth fault Hi-set 50 to 800% in steps of 50%

Char. Angel setting

O/C setting Lead 30º
Lead 45º
Lead 60º
E/F setting Lag 12.5º
Lag 30º
Lag 45º

Contacts Durability

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

Over Load Rating:

Current input 2 times rated continuous 20 times rated for 3s

Burden:

Current input 0.2VA per phase (rated 5A) 0.05VA per phase (rated1A
Aux. Supply Less than 8W (Non operated) Less than 10W (Operated)

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
Phase angle ±9º of the operating angle
High set operating time Less than 30ms @ 2 times current setting
Reset Time 160ms to 180ms

Contact Ratings

Relay rating 10A at 24V DC/230V AC

Mechanical Design :

Weight 2500 gms. (approx)
Case Size 144sq mm, depth 232mm
Installation Flush mounting
Panel cutout 138mm x 138mm

Standard Compliance:

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

Ordering Information

Current rating JRP 011(O/c relay)
JRP 012 (O/c with hiset relay)
JRP 021 (E/F relay)
JRP 022 (E/F with hiset relay)
Current rating 1A / 5A
Auxiliary Supply 20 to 60V DC
75 to 150V AC/ DC
175 to 300V DC / 185 to 250V AC

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