The equipment adopts switching power supply to form a high-voltage constant current source, no-load voltage -15000V, and short-circuit current 30mA. A high-sensitivity amplifier and a galvanometer are used to indicate balance, and a balance bridge is formed with a proportional potentiometer, which is placed at a high potential as a whole. The test line is a specially designed double-core high-voltage rubber cable. The four-terminal resistance measurement method is adopted to avoid the error introduced by the lead resistance. The test line is reliably grounded through the braided shielding layer. The operation button on the panel is at ground potential, and the bridge is operated through an insulating rod. The high voltage constant current source and bridge are integrated in a portable industrial chassis. Therefore, the device has high voltage, light weight, convenient operation and safe use.
1. Test voltage: 0～15kV, negative high voltage, continuously adjustable
2. Maximum current: 30mA
3. Test scale accuracy: ±(0.2%·L±1)m
4. Working power supply: AC220V±10%
5. Anti-interference ability: >100VAC
6. Weight: ≤12kg
7. Dimensions: (L) 380mm × (W) 280mm × (H) 270mm
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