BMQ7A Bus tie controller
BMQ7A bus tie controller is a multi-functional automatic measurement, large screen LCD display as one of the intelligent bus auto-throw conversion system.It is mainly used for automatic control to switch the power supply system with bus connecting circuit breaker.Comprehensive product functions:Manual/automatic function.Automatic control mode includes bus backup and self-throw (including self-throw and self-throw not self- throw), in-line backup and self-throw (including one-way priority and two-way priority), the controller sets reliable double electrical linkage, and the panel can be operated directly by manual buttons The circuit breaker turns on and off. there are five working modes.The bus converter consists of: BMQ7A bus controller, three BMW50 series airl circuit breakers, etc.
● Product structure
BMQ7A bus controller actuator is BMW50 series universal circuit breaker, the product wiring is simple and convenient.No need of external three-phase overvoltage protector, no need to install adapter, controller does not need external control power supply and dc power supply, direct detection of three BMW50 series universal circuit breaker and power state, automatic control to complete the circuit breaker conversion.
● Main funciton
1.It is suitable for automatic switching control of two-way mains power supply, one-way mains power supply and one-way generator or two-way generator
2.Monitor the two-channel three-phase voltage at all times, make accurate judgment on the abnormal voltage (such as loss of voltage, over voltage, under voltage, lack of phase) and output the control switch quantity
3.Internal control power supply switching circuit, fully consider the BMW50 series universal circuit breaker operating mechanism
4.With automatic/manual state switching function, in the manual mode, you can press the manual key to realize the switch switch;Under automatic state, when voltage abnormality occurs in one circuit, the switch will automatically switch to the other circuit
5.Operation mode can be set as: self-throw and self-reply (including first-way priority, second-way priority) or self-throw and non-self-reply: no priority (mutual backup)
6.Digital display two-channel phase voltage and line voltage and working state, LED display two-channel closing and working state at the same time 7.Digital display of three-phase current 8.Setting parameters can be changed on the controller. Digital adjustment (continuous adjustment) is adopted.At the same time, the memory in the internal FLASH memory, when the system power down will not be lost 9.With electrical double interlocking function, always keep only one of them closed
10.It has the function of automatically starting the oil engine; Controller does not need external dc power supply, simple and convenient
11.Two-channel n-line separation design
12.It has the function of fire protection non-cutting (forced tripping) to meet the emergency tripping 13.It has strong ability to resist electromagnetic interference and is suitable for use in complex environments with strong electromagnetic interference
14.Modular structure design, flame retardant ABS plastic shell, embedded installation, plug and pull terminal, compact structure, installation and maintenance is very convenient.
● Main specifications
Ac input: take one or two A and N phase voltages, as long as one of them has electricity, it can work, single phase voltage > 170V.Ac input voltage range: 0-279v (single-phase) / 0-482v (three-phase) 50Hz Input three-phase current: 0-5a (rated).
2.Relay output capacity: 5A 220VAC
● Installation dimension
Overall dimension of controller:164*102*80
Controller opening size：157（W）*94（H）
Opening diagram for BMQ7A controller installation