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HF-WC-637 Switchgear Test Power Supply
This switchgear test power supply provides reliable adjustable AC/DC output. It is specially designed for on-site commissioning, protection relay testing and routine inspection of various switchgears, featuring compact structure and stable performance for field applications.
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The HF-WC-637 High & Low Voltage Switchgear Test Power Supply is specially developed for power-on tests of high and low voltage switchgears. It can supply AC or DC power for switchgear energy storage, electromagnetic locking, closing and tripping operations, featuring easy operation, compact structure and attractive appearance.
HTGK-I Product Features
- Capacity: 3kVA
- Input Voltage: AC220V
- Output Voltage: AC 0~250V; DC 0~300V
- Output Current: 10A
Operating Instructions
- Connect test wires as required. Set switches 10 and 11 to the OFF position.
- Connect the 220V power supply.
- Turn the voltage regulator handle 14 counterclockwise to the zero position.
- Rotate AC/DC selector switch 9 to select the required voltage type: AC or DC.
- Switch on power switch 2. Voltmeter 3 and 4 display zero.
- Turn voltage regulator handle 14 clockwise, observe the reading of corresponding voltmeter 3 or 4 until reaching the target voltage.
- Toggle selector switch 10 or 11 to ON/OFF to control voltage output at corresponding terminal 5 or 6.
- Press or release the “Close” / “Trip” button to control voltage output at corresponding terminal 7 or 8.
- After the test, turn voltage regulator handle 14 counterclockwise back to zero, then turn off the power switch.
Operating Steps for Switchgear Test Power Supply
- Connect test cables as required, set all control switches to OFF state.
- Connect the equipment to AC220V mains supply.
- Rotate the voltage regulator knob counterclockwise back to zero position.
- Select AC or DC output mode via the AC/DC changeover switch.
- Turn on the main power switch; confirm voltmeters show zero reading.
- Slowly turn the regulator clockwise to adjust output voltage to target value.
- Operate control switches or Close/Trip buttons to supply power to switchgear.
- Upon test completion, turn voltage regulator back to zero, then cut off main power.
Packing List
| Item No. | Description | Qty | Unit | Remarks |
|---|---|---|---|---|
| 1 | HF-WC-637 Main Unit | 1 | Set | Aluminum alloy case |
| 2 | Power Input Cable (AC220V) | 1 | Pcs | |
| 3 | Test Connection Cables | 1 | Set | With alligator clips |
| 4 | Operation Manual | 1 | Copy | English & Chinese version |
| 5 | Inspection Certificate | 1 | Copy | |
| 6 | Spare Fuse | 2 | Pcs |
FAQ for HTGK-I Switchgear Test Power Supply
Q1: What is the input power requirement of this test power supply?
A1: The input voltage is AC220V, rated capacity 3kVA. Please use a standard 220V power source for operation.
Q2: What are the adjustable output ranges?
A2: AC output: 0~250V; DC output: 0~300V, maximum output current 10A. It supports both AC and DC mode switching.
Q3: What applications is this equipment suitable for?
A3: It is used for power-on tests of high & low voltage switchgears, supplying power for energy storage, electromagnetic locking, closing and tripping tests.
Q4: How to avoid overvoltage during testing?
A4: Always turn the voltage regulator to zero position before powering on. Adjust the voltage slowly and monitor the voltmeter reading in real time.
Q5: Can I switch between AC and DC output while loaded?
A5: It is not recommended. Please reduce the output voltage to zero first before switching AC/DC mode to protect the unit.
Q6: What should I do after finishing the test?
A6: Turn the voltage regulator back to zero counterclockwise, then switch off the main power supply.
Q7: Does the package contain test cables and operation manual?
A7: Yes. Standard package includes main unit, power cable, test connecting wires, operation manual and spare fuses.
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