Sci-tech Three Phase Earth Fault Protection Relays Model ELTR 001 has been designed particularly for average complexity educational traing purpose.
Each phase has its individual indicator/display, one alarm LED associated to one exchange contact and four push buttons to set the working parameters of the relay.
Default parameters are set at the factory and recorded in the manual.
On the front panel there are 4mm safety terminals for powering the instruments, a power On switch, phase inputs and one Min exchange contact for each phase, operated when the minimum thresholds are exceeded.
Power Supply: 230V AC, 50Hz, 5VA
Insulation Resistance Ω: 0 to ∞
Contacts rating: 10A – 250V AC
Alarm setting Min (factory default, can be changed)
On/Off delay: 0.1 – 9.9sec
Hysteresis: 0 ÷ 100%