Synchro Check Relay JNF 060

OVERVIEW

    Features

  • Programmable bus voltages
  • Programmable bus frequencies
  • Programmable phase angle difference between two buses
  • Dead bus Active/Inhibit feature
  • History of 5 latest relay closing details
  • Self Supervision facility

Application:

JNF 060 is used in power systems in order to prevent interconnection of badly synchronized supplies. Synchro check relay is used in series with a breaker closing circuit and automates the operation of synchronizing two buses.

Synchro Check Relay
JNF 060

Principle of Operation:

JNF 060 monitors voltage, frequency and phase angle difference of both the buses. If “dead bus” feature is Inhibit and If the voltage, frequency and the phase angle differences are within the pre-set limits, then the N/O contacts of the relay operates indicating synchronization of the buses else the relay does not operate.

If “dead bus” feature is Active and if the status of one of the buses (bus-1) is programmed as “dead bus” and the other (bus-2) is considered normal, Then, the relay operates if the voltage on bus-2 is greater than 80% of the rated voltage and the voltage on bus-1 is lesser than a programmable value (30%-80% of the rated voltage).

Output relay can be operated either in continuous mode or pulse mode. In continuous mode, the relay N/O contacts operate after a programmable delay and will remain in that condition until either a synchro check fails or h/w or power on reset occurs. In the pulse mode, the relay N/O contacts operate for a short while and gets released after a fixed delay of 150msec.

 

SPECIFICATIONS

Ratings:

Voltage rating (Un )

:

110V AC
63.5V AC

Frequency rating

:

50Hz

Aux. Supply

:

1) 20 to 60V DC
2) 75 to 150V AC / DC
3) 175 to 300V DC
    185 to 250V AC

 

 

 

Settings:

Min voltage 1

:

10 to 100% of Un in steps of 1%

Min voltage 2

:

10 to 100% of Un in steps of 1%

Voltage Diff.

:

2 to 70% of Un in steps of 1%

Frequency Diff.

:

0.02 to 0.2 Hz in steps of 0.01Hz

Phase angle Diff

:

5º to 75º in steps of 1º

Dead Bus Voltage

:

30 to 80% of Un in steps of 1%

Time Delay

:

0.2 to 1.0 sec in steps of 0.1sec

DB/DL closing delay

:

2 to 20 sec in steps of 1 sec

 

 

 

Mechanical Design :

Weight

:

5000 gms. (approx

Case Size

:

152X296 sq mm, depth 250mm

Installation

:

Flush mounting

Panel cutout

:

146 x 264 mm

     

Standard Compliance :

Accuracy Test

:

IEC 60255-3

Insulation Test

:

IEC 60255-5

     

Accuracy:

Voltage

:

±5%

Frequency

:

±0.02Hz

Phase Angle

:

±2%

Operating time

 

±5%

 

 

 

Contact Ratings:

Trip / Alarm

:

10A at 24V DC / 230V AC

     
 

Contact Durability :

Loaded contact

:

10,000 operations minimum

Unloaded contact

:

100,000 operations minimum

     

Over Load Rating:

Voltage 1 &
Voltage 2

:

200% of rated voltage (continuous)
to both V1 & V2

     

Burden:

AC voltage input

:

Less than 0.1VA at Un

Aux. Supply

:

Less than 4W (Non Operated)
Less than 8W (Operated)

     
 

Synchro Check Relay
JNF 060

 

DOWNLOADS

Synchro Check Relay JNF 060

Catalogues:

DOWNLOAD

Operating Manual:

DOWNLOAD

 

Synchro Check Relay
JNF 060

 

ORDERING INFO.

Ordering Information:

Relay type

:

JNF 060

Voltage rating

:

110V or 63.5V

Aux. Supply

:

20 to 60V DC or

 

:

75 to 150V AC/ DC or

 

:

175 to 300V DC / 185 to 250V AC

 

 

 

 

Synchro Check Relay
JNF 060

 

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