1. Introduction

1.1. Application: The GHP250 AC/DC power supply is designed to provide operational power for vacuum circuit breakers and other highvoltage switches. It utilizes a contact voltage regulator to output 250V AC, while the DC power supply outputs 250V DC. It features continuously adjustable output voltage, high current capacity, compact size, lightweight design, and portability, making it particularly suitable for on-site debugging of high-voltage switches. It can also be used in other scenarios requiring AC/DC voltage.

1.2 Functional Features

1.2.1 Precise continuously adjustable output with full-range voltage stabilization and strong resistance to voltage impact.

1.2.2 One-key operation for open/close tests, making usage simpler.

1.2.3 The DC output is equipped with a high-power source, providing short-term output current of up to 10A and strong load capacity.

1.2.4 True RMS digital display for more intuitive readings.

1.2.5 Compact and aesthetically design, suitable for both on-site and laboratory use.

1.2.6 Comprehensive overcurrent and short-circuit protection for high reliability.

1.3 Operating Conditions

1.3.1 Power Supply Voltage: 220V ±10%, 50Hz ±1%, waveform distortion rate≤5%.

1.3.2 Ambient Temperature: -10°C to 45°C.

1.3.3 Ambient Humidity: ≤80% RH, non-condensing, with no instrument flickering.

1.3.4 Altitude: ≤1000m.

1.3.5 The operating environment should be free of significant dust, smoke, corrosive or flammable gases, water vapor, salt spray, and severe vibrations.

2. Technical Specification

2.1 Input Voltage: AC 220V ±10%, 50Hz ±1Hz

2.2 DC Output Voltage: 0 ~ 250V; 10A (short-time)

2.3 AC Output Voltage: 0 ~ 250V; 5A (short-time)

2.4 Voltage Accuracy: ≤ ±3% (10% ~ 100% of range)

2.5 Current Accuracy: ≤ ±3% (10% ~ 100% of range)