NUMERICAL LOCAL BREAKER BACKUP RELAY JNC 154

OVERVIEW

    Features

  • Wide over current setting
  • Fast reset time
  • History of 5 latest faults

Application:

JNC 154 is a numerical local breaker backup relay. The relay is used to check the operation of feeder breaker and to trip all the breaker feeding fault in the event of feeder breaker fail to trip.

NUMERICAL LOCAL BREAKER BACKUP RELAY JNC 154

Principle of Operation:

The relay is designed to trip the feeder end CB if the protective relay at the distribution end operates but its corresponding CB fails to operate. The current is derived from line CT. The instantaneous trip output contact operate when the over current exist and protective relay operated. The protective relay contact (PRC) input is required. The delayed output contact operates after selected definite time.

 

SPECIFICATIONS

Ratings:

Current rating ( In )

:

1A / 5A

Aux. Supply

:

1) 30V DC (20 to 60V DC)
2) 110V AC/DC
 (75 to 150V DC / 60 to 132V AC)
  220V AC/DC
 (150 to 300V DC / 150 to 250V AC)

     

Settings:

Over current

:

5 to 200% in steps of 5%

Definite time

:

50ms to 1.25s in steps of 10ms.

     

Over Load Rating:

Current input

:

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

     

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)

     

Operating Time

Instantaneous operating time

:

Less than 10 ms.

Reset time

:

Less than 30 ms.

     

Accuracy:

Current protection

:

± 5%

Operating Time

:

± 5%

     
 
 

Contact Ratings:

Make & carry

:

1250VA with max. current 5A or
max. Voltage 660V AC
1000W with max. current 5A or
max. Voltage 250V DC

Break

:

2500 VA with max current 10A or
max. Voltage 660V AC
200 W (resistive) 100 W (inductive)
with max.
current 10A or max. Voltage 250V DC

     

Contact Durability :

Loaded contact

:

10,000 operations minimum

Unloaded contact

:

100,000 operations minimum

     

Insulation:

  1. 1. 2KV RMS, 50 Hz for 1 minute / 2.5 KV for 1 sec . Between all terminals and cases as per IEC 602555.
  2. 1KV RMS, 50 Hz for 1 minute across open contacts as per IEC 602555
 

Mechanical Design :

Weight

:

Approx. 5 Kgs.

Case Size

:

Fascia 152 x 296 mm, Depth 250 mm

Installation

:

Flush mounting

Panel cutout

:

146 x 264 mm

 

NUMERICAL LOCAL BREAKER BACKUP RELAY JNC 154

 

DOWNLOADS

NUMERICAL LOCAL BREAKER BACKUP RELAYJNC 154

Catalogues:

DOWNLOAD

Operating Manual:

DOWNLOAD

 

NUMERICAL LOCAL BREAKER BACKUP RELAY JNC 154

 

ORDERING INFO.

Ordering Information:

Current rating

:

1A / 5A

Auxiliary supply

:

1) 30V DC or
2) 110V AC/DC or
3) 220V AC/DC

 

 

 

 

NUMERICAL LOCAL BREAKER BACKUP RELAY JNC 154

 

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