Sai Creations

Numerical Unibalance Voltage Relay JNV 026

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Features

Numerical Unbalance Voltage Relay JNV 026
  • Software based design
  • Trips on neutral snap
  • Programmable Active / Inhibit facility
  • Programmable Rated voltages
  • Wide range of time delay setting

Principle of Operation:

JNV 026 measures and displays 3 phase voltages (R,Y,B phases). It calculates percentage of unbalance voltage and if it exceeds the set unbalance voltage, the relay operates after the elapse of operating time. Under voltage fault will be detected when voltage on any phase is less than the set Under voltage limit, the relay operates after elapse of under voltage operating time. Over voltage fault is detected when voltage on any phase is more than the set Over voltage limit, the relay operates after elapse of over voltage operating time. Neutral snap will be detected when Neutral is disconnected.

Application:

JNV 026 is a numerical unbalance voltage relay, with under voltage(UV), over voltage(OV) and Neutral snap which is used for three phase systems etc.,

20 in stock

Description

Ratings

Rated voltage and Aux. supply 220V AC / 110V AC
Frequency 50Hz

Settings:

Rated voltage ( Vn) 220 to 250 V in steps of 10V ( for 220V rated) 110 to 125V in steps of 5V ( for 110V rated)
Unbalance voltage 1 to 10% in steps of 1%
UBV time delay 0 – 300s in steps of 1s
Under voltage Vn -50V in steps of 1V (for rated voltage 220V ) Vn -25V in steps of 1V (for rated voltage 110V )
UV time delay 0 – 300s in steps of 1s
Over voltage Vn +25V in steps of 1V for rated voltage 220V & 110V
OV time delay 0 – 300s in steps of 1s
Active / Inhibit facilities Active / Inhibit facilities for UV, OV, UBV

Mechanical Design :

Weight 2500gms. Approx.
Case Size 144 mm, depth 117mm
Installation Flush mounting
Panel cutout 138mm x 138mm

Accuracy:

Operating value ±5%
Operating value
(Def time)
±5%

Contact Ratings:

Rating 10A at 24V DC/ 230V AC

Contact Durability :

Loaded contact 10,000 operations minimum
Unloaded contact 100,000 operations minimum

Burden:

Aux. Supply 10 VA max.
Voltage Input 0.1 VA max.

Ordering Information

Relay JNV 026-X ( rated 220V AC with Neutral snap)
NV 026-X1 ( rated 220V AC with Neutral snap & Phase reversal)
JNV 026-x2 (rated 110V AC with Neutral snap & phase reversal)
For JNV 026-X
  1. Separate output relay for Under voltage and Neutral snap faults.
  2. Separate output relay for Over voltage & Unbalance voltage faults.
For JNV 026-X1 & JNV 026-X2 :
  1. Common output relay for Under voltage, Over voltage, Unbalance voltage, phase reversal & Neutral snap faults.

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