The XH series test transformers utilize C-type cores, featuring a compact size, light weight, low no-load current and loss, high efficiency, and convenient, low-cost maintenance. The XHGK series power-frequency withstand voltage controller is designed to operate in conjunction with various types of power-frequency test transformers, facilitating AC and DC withstand voltage tests on a wide range of electrical equipment, as well as cable fault testing. It also provides an independent output of 0–250/400V power-frequency AC supply.

• Available in various configurations: AC-only, AC series-resonant, AC/DC dual-purpose, and AC/DC series-resonant dual-purpose types;
• Includes XHYB series (oil-immersed), XHGB series (dry-type), and XHQB series (gas-insulated) models;
• Equipped with functions such as overcurrent protection and zero-start interlock; capable of displaying voltage, current, and other parameters;
• Features a built-in overcurrent relay; supports motorized or manual adjustment of output voltage (customizable upon request);

• Rated Nominal Capacity: 1 kVA – 500 kVA
• Transformer Input: 0.2 / 0.4 / 3 / 6 / 10 kV | Output Voltage: 1 kV – 1000 kV
• Control Box Input: AC 220 / 380 V | Output Voltage: AC 0 – 250 / 400 V
• No-load Loss: ≤ 15% | Load Loss: ≤ 15% | Total Loss: ≤ 10%
• No-load Current: ≤ 30% | Impedance Voltage: ≤ 15% | Transformation Ratio Error: ≤ ± 1%
• Display Type: Digital / Analog Pointer (Accuracy Class: 0.5 / 1.0 / 1.5 / 2.5) | Timer Range: 0 – 9999 s
• Overcurrent Protection: Continuously adjustable, manually settable