Multi-point hipot tester UHV-283

AChigh-voltage

Product Introduction:
The UHV-283 is a fully automatic water-injection voltage withstand tester designed for insulation testing of protective equipment such as insulating boots and insulating gloves. The system integrates PLC-based one-key water injection, a lithium-battery powered collection box with battery-level percentage display and an HMI (touch screen) that shows real-time status during the test process. The device is built for batch and periodic testing in industrial and utility environments.

Functions:

• Fully automatic water injection: automatic control of internal/external water levels to ensure consistent test conditions and reduce human error.
• Automatic voltage ramp-up, hold and ramp-down per preset program without manual intervention.
• Multi-station testing: supports simultaneous testing of multiple boots or gloves to increase throughput.
• Independent leakage current detection: real-time display of leakage current per sample for accurate pass/fail determination.

Product parameters:
Intelligent voltage withstand test equipment for insulating boots, insulating gloves and similar safety tools.

Technical parameters:
Device output voltage range: AC 0–50 kV (control 0–250 V)
Rated output capacity: 5 kVA
Device input current: 0–20 A
Leakage current measurement range: 0–30.0 mA (option 0–50 mA)
Leakage current measurement error: 1% ±3 digits
Leakage current resolution: 0.01 mA
Voltage measurement error: ≤1% of indicated value ±0.1% range
Current measurement error: ≤1% of indicated value ±0.1% range
Digital timing range: 0–999 s
Console dimensions: 1300 × 940 × 860 mm
Water-injection unit dimensions: 1900 × 950 × 1860 mm
Console weight: 50 kg
Injection unit weight: 200 kg

Product Characteristics:

• High automation via microcontroller/PLC for simple operation and repeatable results.
• High-frequency switch power supply technology for stable high-voltage output.
• Comprehensive protection: protection against counter-potential, overcurrent and abnormal conditions.
• Audible discharge alarm and clear discharge indication to reduce operator errors.
• Fast response with automatic data refresh and capture of measurement states.
• Vertical chassis layout for convenient onsite placement and maintenance.
• Intelligent power tube operation to minimize internal heating and allow long continuous operation.
• Dot-matrix LCD with menu-driven interface and printout capability.

Application Scenarios:

• Periodic safety-tool testing in power utilities for insulation maintenance of in-service boots and gloves.
• Power plants and substations for batch testing of insulating protective equipment.
• Power safety-tool testing centers, quality inspection labs and third-party testing laboratories for centralized, high-volume testing and reporting.
• Industrial enterprises (petrochemical, chemical, metallurgy, mining, steel, aluminium electrolysis) for routine verification of insulating gear used by staff.
• Railway and urban transit systems for periodic withstand testing of insulating equipment used in overhead-line maintenance.
• Manufacturers of insulating products for factory QA, type testing and verification against standards.

FAQs:

• Q: What does this device test? A: Power-frequency voltage withstand and leakage current of insulating boots, insulating gloves and similar protective products to detect aging, moisture ingress, damage or degraded insulation.
• Q: Why use automatic water injection? A: It simulates working conditions by injecting a conductive medium into samples, ensuring consistent water height between samples, improving repeatability and reducing manual error.

Water injection instructions:

• The test bench comprises two parts: the automatic water-injection unit and the high-voltage testing console; the console connects to the HV output and the chassis via insulation connections.
• The injection unit includes a water pump, solenoid valve and lifting motor. Ground the bench chassis and connect to AC 220 V. The unit has an inlet for filling and an outlet for draining.
• Connect the fill hose to the inlet, open the valve to fill the tank, then close the valve. Do not leave the tank unattended during filling to avoid overflow.
• The system uses recycled water. On power-up the system enters standby. Install the sample and press the glove/boot test button: the injection unit descends, inserts the nozzle into the sample, injects to the preset level, then automatically returns to the initial position.
• The HMI enables parameter settings and includes emergency-stop controls.

Charging instructions:
Charge the collection-box battery before high-voltage testing. Insert the charger into the charging port and connect to 220 V AC; charging indicators show progress. Typical charging time: 2–8 hours. If unused for extended periods, perform one charge/discharge cycle every 1–2 months to preserve battery health.

Model / Key specifications:

• Model: UHV-283
• Output voltage: AC 0–50 kV (control 0–250 V)
• Rated output: 5 kVA
• Input current: 0–20 A
• Leakage current range: 0–30.0 mA (option 0–50 mA)
• Leakage resolution: 0.01 mA
• Timing: 0–999 s
• Console / injection unit sizes and weights as above