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FREQUENT BREAKDOWN
(1 KVA VOLTAGE STABILIZER)
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1 |
UNIT DOES NOT SWITCH ON |
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Reasons may be |
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Plug or lead broken. |
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MCB not working. |
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Mains board defective.
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2 |
NO OUTPUT |
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Reasons may be
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Mains voltage beyond specified limits.
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Voltmeter connection broken.
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Voltmeter defective.
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Voltmeter on-off switch/input-output switch defective.
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Relay connection/contact broken..
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Control circuit malfunction.
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3 |
HIGH/LOW OUTPUT VOLTAGE |
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Reasons may be
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Control circuit malfunction.
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Relay malfunction.
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4 |
NO SWITCH ON DELAY |
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Reasons may be
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Quick start switch permanently pressed.
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Output relay permanently ON.
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LIST OF FAST MOVING SPARES
(1 KVA VOLTAGE STABILIZER )
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1 |
Relay |
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Single change over, 10 Amps,24 Volt D.C.,750Ω |
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Double change over,10 Amps,24 Volt D.C.,750Ω |
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2 |
Miniature Circuit Breaker |
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7.5 Amps, single pole |
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5 Amps, single pole |
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3 |
Voltmeter |
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Square 0-300 Volt, class 1.5 |
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Round 0-300 Volt, class 1.5
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4 |
Printed Circuit Board,complete |
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Single IC
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Three IC |
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Four IC |
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Two IC in case of blue line voltage stabilizer |
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5 |
Output Terminal Strip 6 Way |
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6 |
ON/OFF switch for voltmeter
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7 |
Input/output Selector switch for voltmeter |
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8 |
Control Transformer |
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Sensing transformer in case of blue line voltage stabilizer
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Control transformer-I in case of blue line voltage stabilizer |
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Control transformer-II in case of blue line voltage stabilizer |
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9 |
Main Auto Transformer |
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10 |
Jewel Light Complete |
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LED strip with resistance in case of blue line voltage stabilizer |
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FREQUENT BREAKDOWN
(10 KVA SERVO CONTROLLED VOLTAGE STABILIZER ))
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1 |
NO OUTPUT |
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Reasons may be
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Plug or lead broken.
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MCB not working. |
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Mains board defective. |
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Input voltage not within range |
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Contactor coil defective |
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Pitting of contacts of contactor |
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Terminal strip or transformer burnt |
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Defect in timer & timer coil |
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Instant start switch may be defective |
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Control PCB defective |
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NO REGULATION OR ABNORMAL OUTPUT |
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Reasons may be
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Control PCB defective
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Defect in sensing transformer. |
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Servo motor defective. |
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Variac gear defective. |
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Problem of RC network |
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Carbon brush wear out |
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Flexible wire contact are not proper |
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Variac is burnt or center contact dry soldered |
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