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:
|
Settings |
|
|
Sensitivity adjustment |
30mA, 50mA, 75mA, 100mA, 125mA, 150mA, 200mA, 250mA, 300mA, 500mA, 750mA, 1A, 1.25mA, 1.5A, 2A, 2.5A, 3A, 5A, 7.5A, 10A, 12.5A, 15A, 20A, 25A, 30A |
|
Accuracy |
±5% |
|
Auxiliary supply |
110VAC ±10% OR 240V |
|
90-120VAC |
|
|
Frequency 0 |
50/60Hz |
|
VA rating |
Less than 3VA |
|
Indicator |
|
|
Auxiliary supply |
Green LED |
|
Time delay |
Red LED |
|
Trip |
Red LED |
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
