Ground Earth Fault Protection Relay , 5A Digital Protective Relay
 
 
 A relay used in the power system to detect neutral or ground faults measure the vector difference of the three phase power, or measure the neutral current directly. 
 
Description:
 
Purple Horn 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.
 
cost-effective earth fault relays comprehensively detect and activate trip protection to medium and low voltage applications. The series of earth fault relays are microprocessor-based numerical relays and are housed in resilient mounted casing. The high end model, IDMT characteristic curves which provide multiple matching protection characteristics curve for different load types.
 
 
Specifications:

 
FEATURES 
A. Low-set definite time relay
B. High-set instantaneous relay
C. Separate low- set and high-set trip indicators
D. Low-set trip and pickup indicator
E. High-set trip indicator
F. Auto reset and manual reset contacts available
G. Option to disable the high-set relay
H. Front panel access to the test function
SETTING RANGES 
Low-set: 0.1A to 2.0A; 2% to 40% 
Time multiplier: 0.01 to 1.0 
IDMT curve: Normal inverse 
High-set(l>>): L> to 5× L> 
 
AUXILIARY SUPPLY: 
Supply voltage: 198-265V AC; 90-120V AC 
Rated frequency: 50/60Hz 
 
CONTACTS 
Configuration: 1* latching type with manual reset
                           1*non-latching type with auto reset
                            NO NC contacts available
Trip contact: Automatic reset type 
NC&NO contact type 
6A. 250V AC 
Silver alloy contact material 
100, 000 electrical operations at rated currents 
IINDICATORS 
Auxiliary supply: green LED indicator light
Trip indicator: Manual reset type 
PERFORMANCE 
Adjustable accuracy: Less than ± 5% 
Repeatability: Less than 0.5% of full scale
 
 
Benefit:

• Accurate, reliable and more resistant to vibration and shock than traditional electromechanical relays
• Current measurement based on fundamental frequency, prevents nuisance tripping
• Programmable relay outputs
• Complies with IEC 60255-26 standards

 
Applications:
 
Feeder incoming protection
Outgoing protection
Busbar protection
 
 
Full series: earth leakage relay, earth fault relay, overcurrent relay, zero phase transformer