Explosion-proof Electromagnetic Starter Installation and Maintenance Precautions

Explosion-proof electromagnetic starter is mainly used to control the direct start, stop and forward and reverse operation of the three-phase squirrel-cage induction motor, and can protect the motor from overload and phase failure.

installation:

1. Before the starter is installed, check whether its technical data is consistent with the working voltage and the capacity of the controlled motor. The components of the starter should be in good condition.

2, the introduction of the cable and lead out the application of rubber seals in the wiring device, metal plug ring, compression nut or compression flange to tighten the cable to achieve the explosion-proof requirements, and should be fastened cable locking device;

3, the use of non-use of the rubber seal ring, metal plug ring, metal plug plate tightly sealed;

4, starter shell should be grounded, when installed, its inclination is not more than 15 degrees;

5. The current setting of the protector should be based on the actual operating current.

Use maintenance notes:

1. The protector's electronic circuit and RC components are not subjected to power frequency voltage withstand test 2. When the main circuit is used for pressure test, the protector, RC components and other auxiliary circuits should be disconnected from the main line grounding, and then withstand voltage test should be performed. ;

3. When the power grid system is used for 660 (380) V, the main circuit between phases, relative earth, between the phase pole and pole frequency withstand voltage 2500V, when using the power grid system is 1140 (660) V, the main loop phase, relative Inter-ground, phase and pole voltage between the pole 4200V, 1min; control circuit ground voltage 1000V, 1min shall not have flashover and breakdown phenomenon.
BQD explosion-proof electromagnetic starter

BQD explosion-proof electromagnetic starter applicable scope

Zone 20, Zone 21, and Zone 22 hazardous locations.

Suitable for flammable dust environment.

BQD dust explosion electromagnetic starter Features <br> <br> cast aluminum housing, powder coated.

Built-in AC contactor, self-resetting universal transfer switch or button, etc.

Can control AC 50Hz, 380V, three-phase asynchronous motor direct start and stop, and with overload and phase loss and loss of pressure protection.

Pipe or cable wiring can be.

Meet GB3836-2000, IEC60079 standard requirements

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