The HGL series static inverse time overcurrent relay is used in relay protection circuits of motor transformers and other equipment, as well as transmission and distribution systems. It is particularly suitable for plants without DC equipment. When the main equipment or transmission and distribution system experiences overload and short circuit faults, the relay can reliably operate within the predetermined time limit, cut off the faulty part, and meet the requirements of the power department's compression time step difference countermeasures.

2. Main technical parameters
Overcurrent setting range: 2-20A, with a step difference of 0.1 A.
Quick break current multiple: 2-12 times.
Delay time setting range: 0.1-999.9S, with a difference of 0.1S.
The setting range of quick break delay time is 0.1-0.9S, with a step difference of 0.1S.
Contact capacity: AC250V, can be connected for a long time for 5A, and the closing contact can break the current AC ≤ 2A.
Power consumption: When the current is at the rated value, the power consumption of the relay is not more than 5W.

3. Inverse time delay characteristic table and curve calculation formula
Inverse Time Delay Characteristics Table (S) HGL Series Static Inverse Time Overcurrent Relay

Curve calculation formula: T=K.TS {(1+IS/100I). IS/I]/COS ARC SIN (IS/I)
T: Action time TS: DIP setting value IS: Set current value I: Input current value K: Circuit coefficient 0.908
4. Terminal wiring and setting methods

Terminal wiring diagram

HGL-10 series static inverse time overcurrent relay