Earth Leakage Relay Electronic Motor Protection Relay with ZCT

Description:

KRIPAL Earth Leakage Relay is a micro-mrocessor based electronic protection device  designed  to recognize current leakage to ensure the protection  of electrical installations  and persons  against  direct  and indirect contacts.

KRIPAL micro-processor based digital earth leakage relay used for monitoring low-level  leakage  or  unbalanced current, due to insulation loss on conductors or faulty equipment installed in the network. It 

incorporates a real time continuous display of the earth leakage current value in true RMS ampere and allows

 the isolation of the faulty network or equipment if necessary.  

A ring-type current transformer is used to detect and provide the continuous measurement of the leakage 

current.

Benefit:

Current measurement based on fundamental frequency, prevents nuisance tripping

Digital display or dial activated for ease of use

Robust casing protects the unit from external interference

Applications:

Industrial equipment protection

Suitable for low voltage distribution protection

Specifications:

FEATURES:

 
A. Both latching and non-latching type of tripping contacts 

B. Trip starting indicator 

C. Relay tripped indicator 

D. Detection of no connection to current transformer for extra safety 

E. High immunity to electrical interference 

SETTINGS:

Sensitivity adjustment: 0.1 to 1.0A 
Delay time adjustment: 0.1sec to 3.0sec 

CONTACTS:

Contact arrangement: 1* latching type with manual reset 
1*non- latching type with manual reset 
Bothe NC and NO contacts available 
Contact rating: 6A. 250V AC 
Contact material: Silver alloy 
Operating time: 15ms max. 
Expected electrical life 100, 000 operations at rated current 
Expected mechanical life: 5000000 operations 
 

AUXILIARY SUPPLY:

Supply voltage: 198-265V AC; 90-120V AC 
Rated frequency: 50/60Hz 
VA rating: 3VA typical 

IINDICATORS:

Auxiliary supple: GREEN LED 
Time delay: RED LED 
Trip: RED LED 
 

PERFORMANCE:

Adjustable accuracy: Less than ± 5% 
Repeatability: Less than 0.5% of full scale