چەندین پرسی کۆنترۆڵدا SF₆ گازی بەرەوێتەوە و ئەنجامی نەکەوتانی کۆنترۆڵدا کامیلەکانی ئاسایی کێشەکە چیە؟

Vê nivîs faults dihewîn derveyên sereke du: çavkaniya gazê SF₆ û faults ya circuit breaker-ê ku nayê bikar bûn. Her yek li jêr têne şevirin:

1. Çavkaniya Gazê SF₆

1.1 Type Fault: Piştgiriya gazê bi rêjiya wêj, lê density relay nayê alarm an lockout signal bike

Sedeya: Density gauge (i.e., contact) nayê vebike
Inspection & Handling: Actual pressure bi standard gauge ên calibrate bike. Eger piştgirî bike, density gauge jêbirin.

1.2 Density Relay Alarm an Lockout Signal Bike (lê pressure normal e)

Sedeya 1: Crosstalk signal
Inspection & Handling 1: Alarm wiring jêbirin û contact li density gauge ên measure bike. Eger contact normal be, problemê ya crosstalk signal resolve bike.

Sedeya 2: Voltage crosstalk
Inspection & Handling 2: Alarm wiring jêbirin û contact li density gauge ên measure bike. Eger contact normal be, troubleshoot û fix voltage crosstalk.

Sedeya 3: Density gauge faulty
Inspection & Handling 3: Alarm wiring jêbirin û contact measure bike. Eger confirmed closed be, density gauge jêbirin.

1.3 Density Relay Alarm an Lockout Signal Bike (pressure low e)

Sedeya: Leak point li circuit breaker — such as at the charging valve, column flange surface, or sand hole in the rotating housing
Inspection & Handling: Lateral pressure comparison perform bike; eger only one phase low pressure show bike û instrument error ruled out bike, leak detection perform bike û repair accordingly.

1.4 Pressure Too High

Sedeya 1: Overcharging during gas filling
Inspection & Handling 1: Gas replenishment records review bike û pressure gauge calibrate bike. Eger confirmed bike, gas release bike (pressure must not exceed 0.3 atm above rated, regardless of temperature).

Sedeya 2: Density gauge faulty
Inspection & Handling 2: Actual pressure bi standard gauge ên calibrate bike. Eger inaccurate be, density gauge jêbirin.

Sedeya 3: Voltage crosstalk
Inspection & Handling 3: Eger pressure normal be û no motor operation signal precedes lockout, secondary circuit inspect bike û correct any issues.

2. Circuit Breaker Failure-to-Operate Faults

2.1 Circuit Breaker Fails to Operate

Sedeya 1: Control power not energized
Inspection & Handling 1: Relays visually inspect bike — eger all de-energized be, control power restore bike.

Sedeya 2: Remote/local switch is set to "Local" position
Inspection & Handling 2: Check for control circuit disconnection signal. Switch selector to "Remote" mode.

Sedeya 3: High resistance in opening/closing circuit contacts
Inspection & Handling 3: Total resistance of the trip/close circuit measure bike. Identify faulty component and repair or replace.

Sedeya 4: Damaged component in trip/close circuit
Inspection & Handling 4: Resistance of the trip/close circuit measure bike. Locate and replace the faulty component.

Sedeya 5: Loose auxiliary switch wiring
Inspection & Handling 5: Circuit resistance measure bike, identify loose connections, and re-terminate securely.

Sedeya 6: Faulty mechanism or auxiliary switch
Inspection & Handling 6: Mechanism and auxiliary switch visually inspect bike. Develop repair plan based on findings.

2.2 Minimum Operating Voltage Does Not Meet Standards

Sedeya 1: Bypassing lockout relay and auxiliary switch contacts for convenience
Inspection & Handling 1: When testing coil minimum operating voltage, the test must go through auxiliary switch S1 and lockout contact, using momentary operation. Perform test at the terminal block in the circuit breaker control cabinet.

Sedeya 2: Insufficient test instrument power
Inspection & Handling 2: Before testing, verify instrument reliability (e.g., check for AC or DC offset). Replace the instrument and retest.

Sedeya 3: Discrepancy between instrument output voltage and display reading
Inspection & Handling 3: Replace or recalibrate the test instrument.

Sedeya 4: Test instrument outputs AC component (waveform superposition affects low-voltage accuracy and may burn out coil or resistor; must be <10V)
Inspection & Handling 4: Before testing, use a multimeter on AC voltage range to measure AC component output. Replace the instrument if present.

Sedeya 5: Test instrument outputs DC component
Inspection & Handling 5: Before testing, use a multimeter on DC voltage range to measure DC component output. Replace the instrument if present.

Sedeya 6: Transient interference spike superimposed on output pulse, causing abnormally low minimum operating voltage
Inspection & Handling 6: Monitor output pulse with an oscilloscope. Confirm issue and replace the instrument; compare results with different testers.