Benchtop power supply UHV-930

AC/ACregulatedconstant-current

The UHV-930 precision program-controlled power supply is a programmable AC voltage and current source designed for inspection, calibration and production test applications. It provides low-distortion sinusoidal outputs with adjustable amplitude, phase and frequency and strong, stable load-driving capability for resistive, inductive, capacitive and composite loads.

Key capabilities

• Programmable generation of low-distortion AC voltage and current with adjustable phase and amplitude (supports 2nd–22nd harmonic synthesis and arbitrary harmonic combinations).
• Fast hardware PID response and digital control (32-bit MCU + DSP) for minimal output fluctuation under load changes.
• Strong and stable load driving for capacitive, inductive, resistive and mixed loads; automatic range switching for voltage and current.
• On-board LCD user interface and PC connectivity (RS232) with open communication protocol for integration and secondary development.
• Comprehensive protections: over-current, over-voltage, over-temperature, short-circuit, open-circuit and overload.

Typical applications

• Calibration laboratories and metrology (meter testing workflows when combined with PC software).
• R&D and functional testing of power equipment, inverters and protection relays.
• Production test benches requiring programmable phase/frequency and harmonic simulation.

Specifications

• AC voltage output: Regulation fineness 0.05%RG; Accuracy < ±0.1%RG; Stability < ±0.03%RG/1min; Distortion < 0.1% (non-capacitive load); Rated output power per phase 15 VA; Full-load adjustment rate < ±0.03%RG; Full-load adjustment time < 1 ms; Output range 0 V ～ 420 V; Gear settings 0–140 V, 140–280 V, 280–420 V (automatic).
• AC current output: Regulation fineness 0.05%RG; Accuracy < ±0.1%RG; Stability < ±0.03%RG/1min; Distortion < 0.1% (non-capacitive load); Rated output power per phase 15 VA; Output range 0 A, 1 mA ～ 10 A (20 A option); Typical gear ranges 0–0.2 A, 0.2–1 A, 1–5 A, 5–10 A with automatic switching; customizable up to 20 A.
• Power output: Accuracy < 0.1%RG; Stability < 0.03%/1min.
• Phase: Adjustment 0 ～ 359.99°; Resolution 0.02°; Accuracy ±0.05°.
• Frequency: Adjustment 40 Hz ～ 65 Hz; Resolution 0.005 Hz; Accuracy ±0.005 Hz; Temperature drift ±1 PPM/°C; Long-term stability ±4 PPM/year.
• Power factor: Range −1 ～ 0 ～ +1; Resolution 0.05%; Accuracy 0.1%.
• Mains: 220 V AC, 50 Hz ±5%.
• Harmonic output: Supports accurate 2nd–22nd harmonic generation; harmonics combinable and output simultaneously. Note: available load capacity is reduced (approx. half) when outputting harmonics — ensure load does not exceed half the rated value for reliable operation.
• Interface & control: 320×240 LCD display; 32-bit MCU + DSP; RS232 and open protocol for PC integration and secondary development.
• Protections: Over-current, over-voltage, over-temperature, short-circuit, open-circuit, overload.
• Dimensions: 480 × 330 × 680 mm.
• Net weight: 31.6 kg.