How much do you know about the analysis and treatment of the circuit breaker refusal closing fault o

How much do you know about the analysis and treatment of the circuit breaker refusal closing fault of liquid packaging machine? Vacuum packaging machine circuit breaker common fault and abnormal, most of the operating mechanism and circuit breaker control circuit element fault, including miss, miss, misfit, misfit, non-total coincidence, mechanical stuck. Abnormal body is often caused by leakage of oil and other faults.

How much do you know about the analysis and treatment of the circuit breaker refusal closing fault of liquid packaging machine? Below we have to understand the packaging machinery circuit breaker refused to close the fault analysis, judgment and treatment of the relevant knowledge:

1. How much do you know about the analysis, judgment and treatment of circuit breaker refusal to close fault of liquid packaging machine? When the circuit breaker of packaging machinery equipment refuses to close, the failure of electrical circuit and mechanical fault occurs, which is basically in the process of closing operation and reclosing. There are two main reasons for the rejection: one is the electrical fault, the other is the mechanical reason.

(1) how much do you know about the analysis, judgment and treatment of circuit breaker refusal to close fault of liquid packaging machine? Common electrical faults.

(1) the packaging machine circuit breaker electrical circuit fault may have: if the closing operation before the red and green indicator lights are not bright control national road has broken or no control power supply. Check whether the control power supply and all the components on the pull path are normal. For example, whether the operating voltage is normal, whether the fuse is fused, whether the anti-trip relay is normal, whether the auxiliary contact of the circuit breaker is good, whether there is no air pressure, hydraulic mirror, etc

(2) when the operation after closing the red light is not on, green light flashing and accident loudspeaker sound, it means that the position of the handle and the position of the circuit breaker does not correspond, the circuit breaker is not closed. Its common original:

A. The melt of the closing circuit fuse is blown or has poor contact.

B. Closing contactor does not operate.

C. failure of closing coil.

(3) when the circuit breaker of the full-automatic vacuum packaging machine closes, the green light goes off and the red light goes on, but the red light goes off and the green light flashes instantly, and the accident loudspeaker rings, indicating that the circuit breaker will trip automatically after closing. The reason may be that the circuit breaker closes on the faulty circuit, causing a trip of the protective action or a mechanical failure of the circuit breaker, which fails to keep the circuit breaker in a closed state.

(4) if the operation after closing the green light off, the red light is not bright, but the ammeter has been indicated that the circuit breaker has been on.

Possible causes are poor contact between the auxiliary contacts of the circuit breaker or the contact of the control switch, or disconnection of the tripping coil to block the circuit, or fuses of the control circuit to blow out, or damage to the indicating bulb.

(5) operator handle return too early.

6 split circuit dc power supply grounding at two points.

All landowners SF6. Circuit breaker gas pressure too low, density relay closed operating loop. 8 hydraulic pressure below the specified value, closing loop is closed.

2) how much do you know about the analysis, judgment and treatment of circuit breaker refusal to close fault of liquid packaging machine? Mechanical failure

Connecting rod of transmission mechanism is loose and fall off.

(2) close the iron core card shibuya

(3) automatic packaging machinecircuit breaker after the opening mechanism did not return to the pre-closed position.

(4) tripping mechanism trip.

Closing electromagnet action voltage is too high, so that the valve can not open.

6 spring operating mechanism closing spring energy storage.

The break rod has not reset.

Opening lock hook did not hook or opening four linkage adjustment did not cross the dead point, so can not maintain closing.

(9) oh mechanism stuck, connecting part of the shaft pin off, so that the mechanism empty. Sometimes when the circuit breaker is closed for many times continuous close, split action, at this point the switch auxiliary action break contact opened too early

(2) how much do you know about the analysis, judgment and treatment of circuit breaker refusal to close fault of liquid packaging machine? Judgment on the reason of circuit breaker "reject and close" of vacuum packing machine

There are three steps to determine the cause and treatment of circuit breaker "failure".

(1) use the control switch to re-connect, the purpose of which is to check whether the previous close is caused by improper operation (such as the control switch let go too fast, etc.)

(2) check the electrical circuit of each part of the situation, to determine whether there is a fault in the electrical circuit. The specific methods are as follows:

A. Check whether the closed control power is normal.

B. Check whether the closing control loop and the closing fuse are in good condition.

C. Check whether the contact of the closing contactor is normal (such as electromagnetic operating mechanism).

D. Turn the control switch to the position of "when closing" and see whether the closing iron core moves (similar to the inspection of hydraulic mechanism, pneumatic mechanism and spring mechanism). If the closing core works normally, the electrical circuit is normal.

(3) if the electrical circuit is normal, circuit breaker still can not close, then it is a mechanical fault, should stop circuit breaker, report to the relevant leader to arrange maintenance treatment.

After the above preliminary inspection, can determine the electrical aspects, or mechanical aspects of the fault.