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The EKOSsr 50 system is developed for compact MV switchboards with circuit breakers, as compact protection relay and related core-type transformer combination.
The combination of CTs and the EKOSsr 50 form a joint protective system. For realizing trip of the CB, a low-energy coil is necessary.
Parameter setting can be done with DIP switches on EKOSsr 50. All electronic components including the housing are safely protected against external factors.
The following protection functions are realized in EKOSsr 50:
- 3 phase definite time over current and short-circuit protection with variable tripping times.
- 3 phase over current protection with selectable inverse time characteristics and definite time short-circuit current element.
- definite time earth over current protection by internal calculation