Features

Software based design

Display of Power factor, Phase angle and frequency

Dust proof enclosure

Draw out type

Principle of Operation:

The R-Phase line current input to the relay is derived from the line CT. The R – B line voltage is scaled to relay rated voltage using transformers. The relay measures the phase angle between R-Current and R-B voltage. The output contact operates when PF reaches lead condition after fixed operating time of 60s. The output contact, release when PF reaches lag condition after fixed operating delay of 60s. The aux supply required for the operation of relay is derived from the voltage input hence no need of dedicated power source. The relay displays power factor, line frequency, phase angle between line current and voltage.

Application:

JRR 011 is used to trip (dis-connect) the capacitor bank from the line during lead power factor in the system.

Description

Ratings

Frequency rating	110V or 415V AC
Current	1A or 5A
Frequency	50Hz ±5Hz

Over Load Rating:

Current input	2 times rated continuous 20 times rated for 3s. 40 times rated for 1s
Voltage input	2 times rated continuous

Settings:

Definite time	0.1 to 20.0s in steps of 0.1s
Setting range Ch1	45 to 55Hz in steps of 0.01Hz
Setting range Ch2	45 to 55Hz in steps of 0.01Hz
Dropout frequency	0.1 to 1.5Hz in steps of 0.1Hz
Low voltage blocking	75% of rated voltage
Evaluation time	5 Cycles

Burden:

Current input	Less than 0.05VA at rated 1A Less than 0.2VA at Rated 5A
Voltage input	Less than 10 VA

Accuracy:

PF	± 0.02 or ± 2°
Frequency	± 0.05 Hz

Contact Ratings:

Contacts	5A at 24V DC / 230V AC

Mechanical Design :

Weight	App. 2kg
Case Size Fascia	144sq mm with depth 232mm
Installation	Flush mounting
Panel cutout	138mm x 138mm

Contacts Durability

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

Ordering Information

Relay type	JRR 011
Current rating	1A / 5A
Rated voltage	110V AC or 415V, 50Hz., AC

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LEAD POWER FACTOR RELAY JRR 011

Features

Principle of Operation:

Application:

Description