MQ2 is designed for using in the infrequency supply electricity fields and is capable of meeting more demands of reliable power-driven equipment under city power-driven increasing condition. It has the features of reliable performance, small volume, and simple operation.
Features:
1) Provided with such protective functions as checking two sources
of voltage at the same time, protection when any one phase or one
phase above experiences under- or over-voltage, guide phase
2) When two sources have abnormal or faulty tripping (overload,
short circuit), the controller won't send out the order to realize
the protective function of reopening and closing
3) Four working modes: automatic control, common source (power
supply I), standby power supply (power supply II), breaking electricity
(re-tripping)
4) When the working mode is in the automatic control state, it has
two self-throw no self-recover, self-throw, and self-recover functions:
a) Self-throw non-self recover: when the device enters the working
state, power supply I automatically throws into supplying electricity;
when power supply I has an abnormity, it will automatically transfer
to power supply II; when power supply I recovers, it doesn't transfer
until power supply II has an abnormity, then it will automatically
transfer to power supply I
b) Self-throw and self-recover: when the device enters the working
state, the common source throws into supplying electricity; when
power supply has an abnormity, it will automatically transfer to
standby power supply; when common power supply recovers, it will
automatically recover common power supply; but when the standby
power supply has an abnormity, the controller will emit an alarm sound.
Specifications:
1) Rated current: 30 - 5,000A
2) Rated working voltage: 690V
3) Selection function: self-throw self-recovery, self-throw non-self-recovery,
provided controller outside
4) Connection voltage: 230 - 400V
5) Product features: integrated transferring, reliable performance
