ZŁ-ADM - Arc fault detection module

     Protects peopleand quipment against arc faults



     Quick arc fault detection


     
     Cooperation with any kind of protection relay



     Selectivity of shutdowns



     Light detection with front sensors and optical fibre loops


 
     Voltage-free connection of sensors



     Self-testing for circuit integrity and fiber optic cable continuity



     Communication with SCADA RS485 Modbus-RTU



     Output contacts 220 DC. Additional strong contact can be used for direct short-circuit tripping 



     Error signaling



     Many years of experience

The essence of the problem

Human errors e.g. wrong connections, bad work organization, cause most (60%) of arc faults. The best solution to protect people and electrical equipment against arc faults is specialized protection, that detects arc fault light. Such solution is the fastest and the most effective way of minimizing the damages effect of arc faults. 

Key protection factor: arc fault duration time

Arc duration time = time of light detection + logic time (executed in protection relay) + circuit breaker time.

In ADM protection, detection impulse send to protection relay is generated in the time below 5 ms. Time of bay protection logic (10-50ms) and time of circuit breaker (CB) (25-50 ms) must be also included. Tripping time below 100ms ensures full protection of people health and life and limits equipment damage to the minimum.

It is very important to optimise protection relay logic to ensure as fast tripping as only possible.

Each 10ms of arc fault protection faster reaction provides significant safety benefit!