Over-frequency protection relay MP 250

under-frequencyfor generatorsUSB

MP250 continuously monitors the mains parameters, in order to interrupt the parallel between the generators and the mains in case some parameters are of out of limits. The digital outputs of the relay can be used to issue an opening command directly to a circuit breaker, or to issue a trip command to other controllers (genset controllers). A secondary circuit breaker can be managed (backup circuit breaker), in case of opening failure of the main one (interface circuit breaker). A complete set of mains protections is available. The relay features multistage protections for under and over voltages, under and over frequency as well as rate of change of frequency (ROCOF). All protections are fully configurable, allowing the use of MP250 in different countries with different grid codes, and providing fault ride through capability to prevent nuisance tripping. MP250 is fully compatible with relevant grid codes, including G59/3 and G99. The relay displays its operating status and alarms via an LCD graphic display and led indicators. The front mounted push-buttons allows display navigation, parameters setting and alarms reset. Parameters are accessible from either the front panel or by connection to a PC using the BOARDPRG3 software. Inputs and outputs -N. 4 Digital Inputs. -N. 6 Digital outputs. Communication -N. 1 USB port. Technical data -Power supply voltage: 7...32Vdc. -Power consumption in stand-by: less than 3 W (110mA @ 27 VDC). -Rated frequency: 50Hz or 60Hz -Operating temperature: -30°…+70 °C. -Storage temperature: -35…+80 °C. -Humidity: 10-90% (non-condensing). -Dimensions: 141(L) x 113 (H) x 39(P) mm.