中文GV2-M circuit breakers for motors
Product brief:
GV2 motor protector for 3 extreme heat magnetic circuit breakers, designed for motor control and protection design, according to the standard of IEC 60947-2 and IEC 60947-4-1 for. Mainly used in AC 50Hz, rated voltage up to 415. The circuit of rated working current 0.1A-32A, as motor overload, short circuit, broken phase, blocking and three-phase unbalance protection, and not frequent starting, used as an isolator. GV2 motor protector adopts module structure, can conveniently install auxiliary contact, alarm contacts, under voltage release and shunt tripping device and other accessories.
Performance description:
1, when the motor circuit breaker to operate on its own can be manually controlled (can be controlled through a button or knob control), connecting the contactor can be remote control;
2, motor protection by integrated thermal relay circuit breaker;
3, all charged parts have been protected, can not be directly from the front panel touch;
4, with undervoltage release module, the circuit breaker can open under pressure conditions;
5, with sht module, disconnect the device can use the remote control;
6, installation of open type and close type motor circuit breaker control device can be used 3 padlocks locked in “N/C” position.
Advantage
Compact and concise, GV2 TeSys motor circuit breaker only 45mm wide, and according to the control type, breaking capacity, motor protection components and accessories
And so on the different performance and the function to carry on the classification.
When to replace an ac contactor?
- At Saturday August 29th, 2015
- By Jacky Zheng
- In Technology
0
Q: AC contactor damage to what extent should be replaced?
A: (1) AC contactor three-phase main contacts (dynamic and static contacts burning area in more than 25%, the depth of loss in more than 1mm, the depth of loss in more than 1mm
(2) the contactor coil burned, the main contacts outside the terminal lined severe burns
(3) the main transmission mechanism of fracture or deformation of the contact, the contact can not be closed and blocked stuck
When the contact surface is caused by the contact surface of the contact surface, the contact surface is reduced. If it is a large power motor, it can be considered to start with decompression or frequency conversion, improve reliability
Replacement of AC contactor should be the first to buy the same parameters of the contactor, coil voltage, contactor capacity and model,
When the contactor can not be charged, the installation of screws and the time to pay attention to can not be lost in other electrical components to avoid a short circuit, if the condition is best to get a little bit magnetic, so that the screw can not be removed, and the best time to record the wire to avoid installing the wrong line,
3 phase contactor
- At Saturday August 22nd, 2015
- By Jacky Zheng
- In Technology
- 0
Three-phase power supply is connected with the AC contactor three main contact, also three main contacts connected with the motor, AC contactor coil is connected with the control circuit and controlled by buttons of AC contactor suction can be.
A: the general three-phase contactor, a total of 8 points, three road input, three output, there are two control points. Output and input, it is easy to see. If you want to add a self – lock, then you need to be from the output point of a terminal line to the control point.
Two: first, the principle of this single AC contactor. It uses external power to add on the line to produce an electromagnetic field. And pull power, power point of contact is disconnected. You should be aware of the principle of the external power supply, it is the two of the coils, the general in the lower part of the contactor, and on one side. Other several road input and output in the upper part, a look at the. Also pay attention to the number of external power supply (220V or 380V), the general subject of. And note that the contact point is often closed or open. If there is a self – lock control, according to the principle of the line on the line.
AC Contactor auxiliary module
- At Tuesday August 18th, 2015
- By Jacky Zheng
- In Technology
- 0
The contactor auxiliary contacts module
LA1-DN02C
LA1-DN04C
LA1-DN11C
LA1-DN13C
LA1-DN20C
LA1-DN22C
LA1-DN31C
LA1-DN40C
Surge suppression module
LA4-DA2U
LA4-DA2N
LA4-DA2E
LA4-DA1U
LA4-DA1G
LA4-DA1E
Contactor interlocking modules
LA9-D09978C
LA9-D11502
LA9-D50978C
Contactor module side auxiliary contacts
LA-D8N11
LA-D8N20
Contactor delay module
LA-DS2
LA-DT0
LA-DT2
LA-DT4
LA-DR0
LA-DR2
LA-DR4
Thermal relay base
LA7-D1064
LA7-D2064
LA7-D3064
contactor with switching capacitor
LC1-DGK11M7C
LC1-DMK11M5C
LC1-DMK11M7C
LC1-DPK12M7C
LC1-DTK12M7C
LC1-DWK12M5C
LC1-DWK12M7C
vacuum contactors
Vacuum arc extinguishing chamber is used to connect and cut off the normal operating current, which is usually used to connect and disconnect the 6kV, 380V (1140V, 660V) AC motor.
Form
The vacuum contactor is composed of the vacuum arc extinguishing chamber and the operating mechanism. The vacuum arc extinguishing chamber has two functions, which are reliable and arc extinguishing through normal working current and frequent cutting off working current. But can not cut off the load current and short-circuit current. The operating mechanism is composed of a belt core holding coil and armature structure. The coil is energized, the armature contactor coil; attract, loss of power, disconnect contactor. The suction coil generally has two forms of DC and AC.
The vacuum chamber is made of glass or ceramic insulating material, and the vacuum degree is usually above 0.01Pa. Because of the air inside the shell, the contact distance can be very small, and the electric arc can be easily extinguished. The contact material is usually made of copper, antimony, osmium alloy etc.. Arc in arc chamber shield is, when the current is broken, condensation contact gap in the diffusion of metal vapor, contribute to the extinction, also can prevent metal vapor splashed on the insulating casing to reduce the insulation strength. The movable contact and the lower end of the casing are connected with the corrugated pipe, and the movable contact can be moved up and down and the movement can not leak.
The arc extinguishing ability of the vacuum contactor is good, the pressure resistance is good, the operating frequency is high, the life is long, and no electric arc spraying.
Vacuum contactor circuit diagram
Product is small, light weight, maintenance cycle is longer. The vacuum arc extinguishing chamber is very high. If the process is bad, the vacuum of the arc chamber is easy to fall. Contact material is not good, in the break current will appear “cut off” phenomenon, that is, the point of breaking current, due to the vacuum arc extinguishing ability is very strong, the arc current is not natural zero crossing, but from the current value of a sudden drop to zero, resulting in high voltage. Closure voltage will endanger the safe operation of electrical equipment.
