BGHM1 Series Plastic Case Circuit Breaker
Data： 2021-03-12 10:30:22 Hits： 575
Scope of application
BGHM1 series plastic case circuit breaker. It is one of the new circuit breakers designed and manufactured by our company with international advanced technology. Its rated insulation voltage is up to 800V, suitable for AC 50Hz, rated working voltage 690V and below, and rated working current up to 800A for infrequent conversion and infrequent motor starting. The circuit breaker has overload, short circuit and undervoltage protection functions, which can protect the circuit and power equipment from damage.
Applicable working environment
The altitude is 2000m and below;
The temperature of the surrounding medium is not higher than +40℃ (+45℃ for marine products) and not lower than -5℃; α can withstand the influence of humid air;
Can withstand the influence of smoke and oil mist; can withstand the influence of mold;
The maximum inclination is ±22.5℃;
It can work reliably when subjected to the normal vibration of the ship; it can work reliably when subjected to an earthquake (4g);
In a non-explosive medium, and the medium is not enough to corrode the metal box and destroy the insulating gas and conductive dust; in the place where there is no rain and snow.
Model and meaning
Classification of circuit breakers
According to the number of poles of the product, it is divided into two poles (100A, 225A), three poles and four poles (ZQM1-800 has no four poles). There are four types of neutral pole (N pole) in four-pole products:
Type A: N pole is not installed with overcurrent release, and N pole is always on, and not combined with other three poles: Type B: N pole is not installed with overcurrent release, and N pole is together with other three poles Combined points;
Type C: N pole is installed with an overcurrent release, and the N pole is combined with the other three poles;
Type D: N pole is installed with an overcurrent release, and the N pole is always on, and it is not combined with the other three poles.
According to rated current (A):
BGHM1-63 is (6), 10, 16, 20, 25, 32, 40, 50, 63A nine-level (6A specification overload protection); BGHM1-100 is (10), 16, 20, 2 5, 32, 40 , 50, 63, 80, 10OA level ten;
BGHM1-160 has four levels of 100, 125, 140, 160;
BGHM1-225 is 100, 125, 140, 160, 180, 200, 225A seven levels; BGHM1-400 is 225, 250, 315, 350, 400A five levels; BGHM1-630 is 400, 500, 630A three levels:
BGHM1-800 has three levels of 630, 700, and 800A.
According to the wiring method, it is divided into three types: front wiring, rear wiring and plug-in type.
According to the type of overcurrent release, there are two types: thermal-actuation-electromagnetic (duplex) type and electromagnetic (instantaneous) type.
For example:
For example, order BGHM1-10OM three-pole, motor protection, rated current 8OA, with shunt release, auxiliary contact, wiring on the front of the board, and two mechanical interlocking mechanisms are required. That is, it is written as: BGHM1-100M/33402In=80A, 2 mechanical interlocks are wired on the front of the board, and the coil voltage of the trip unit: AC220V.
For example, order BGHM1-225 four-level, for power distribution, with a rated current of 180A and an electric operating mechanism and a shunt release. The N pole is installed with an overcurrent release, and the N pole and other three poles are combined and divided together. 10 sets of rear wiring. That is, it is written as BGHM1-225P/4310C type, 10 sets of In=180A board, electrical operation voltage: 220V, trip coil voltage: 220V.
Protection characteristics
The circuit breaker thermal release has inverse time characteristics: the electromagnetic release is instantaneous. The characteristics are shown in Table 1 (for power distribution) and Table 2 (for motor protection). Table 1 (for power distribution)
