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HF-HG-310 High Current Temperature Rise Tester
High Current Temperature Rise Tester provides continuously adjustable large alternating current. It is widely applied to temperature rise tests on switchgears, bus bars, contactors and circuit breakers to examine heat generation performance under rated current.
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Overview
The high current temperature rise tester checks thermal performance of power electrical products. It supplies adjustable and stable high current to simulate rated and overload conditions, and monitors temperatures of contacts, terminals, busbars and other conductive components in real time. Featuring closed-loop constant current control and multi-channel temperature measurement, it automatically records data until thermal equilibrium. Suitable for circuit breakers, switchgears, bus ducts, transformers and cable fittings. It supports type tests, factory inspections and on-site acceptance. Compliant with IEC and national standards, it verifies temperature rise limits, detects poor contact and heat dissipation defects, and ensures reliable operation of power equipment.
Functions & Features
- Equipped with high-performance industrial PC and Siemens PLC as core processor. It scans AC signals continuously to realize full monitoring and closed-loop control. Password management is configured; only authorized operators can access specific functions.
- Adopts imported 10-inch true-color PC touch screen. Intelligent sensors supporting fieldbus achieve fully digital data transmission. The touch color LCD display features full Chinese menu with intuitive interface for simple operation. No auxiliary equipment required; fully automatic control for easy operation.
- HF-HG-310 supports automatic and manual test modes. Users only need to set test current and duration. Built-in automatic current stabilization system.
- Set target current without continuous manual supervision. Parameters including test duration, current and step values are configurable, eliminating manual voltage adjustment, data logging and curve plotting. After test completion, data can be uploaded to computer for review.
- Auto alarm upon limit violation. Reliable protection against overheating, overcurrent, overvoltage and phase loss. The AC voltage regulator features dual protection: microcomputer automatic protection and mechanical limit switches, ensuring stable power supply and improved safety & reliability.
- User-friendly full Chinese interface. The software supports data recording, storage of current & temperature values, data management, report generation and printing. It visually displays data and analysis results. During testing, it automatically follows target current, adjusts three-phase output and returns output to zero after test completion.
- The adjustable AC constant current source complies with GB 7251.1 ~ GB 7251. It is suitable for temperature rise tests of low-voltage switchgear assemblies (GCK, MNS and other multi-output control cabinets). Multiple constant current sources can run synchronously for parallel temperature rise tests.
- Built-in three-phase automatic balancing system to guarantee balanced three-phase output. Current sampling uses 0.2S-class current transformers. Adopting advanced power electronics technology, it delivers strong anti-interference and high output precision up to 0.5 class.
- Built-in precision adjustment function for user calibration. Programmable AC constant current source supports intelligent full-range calibration and automatically generates multi-segment correction coefficients to guarantee current stabilization accuracy.
- Custom test modules and software upgrades available upon request.
- Integrated power compensation system.
Technical Parameters
| Item | Specification |
|---|---|
| Model | HF-HG-310 Three-Phase Temperature Rise High Current System |
| Max. Output Current | 3 groups of AC 3000A |
| Circuit Configuration | Electric voltage regulator with special manufacturing process |
| AC Input | |
| Phase | 3Φ4W+G |
| Voltage | 380V±10%, 50Hz±2% three-phase four-wire |
| Input Current | 78A |
| Output | |
| Phase | 3Φ4W |
| Voltage | Phase voltage: 0–10V; Line voltage: 17.732V |
| Current | AC 0–3000A continuously adjustable, stepless speed regulation; Simultaneous three-phase output, single-phase output or separate phase output; Manual / automatic operation modes |
| Rated Capacity | 90kVA |
| Current Stabilization Precision | Output current ±0.5% |
| Output Terminal | Connection terminals |
| Protection | Electronic circuit fast detection for overvoltage, overcurrent, overtemperature, phase loss; auto tripping & alarm. Voltage and current return to zero under standby status |
| Precision | |
| Source Effect | ≤0.3% of rated value |
| Time Drift | ≤1% of rated value |
| Temperature Drift | ≤0.04% rated value / °C |
| Load Effect | ≤1% rated value (output voltage variation when output current changes from zero to rated) |
| Ripple Voltage | ≤1% rated value +10mV |
| Others | |
| Line Regulation Rate | 0.1% |
| Load Regulation Rate | 0.1% |
| Display & Setting | |
| Voltage Display | True-color LCD & digital meter (Accuracy: 0.1V, Error ≤0.2%±1 digit) |
| Current Display | True-color LCD & 6-digit digital meter (Accuracy: 0.1A, Error ≤0.2%±1 digit) |
| Adjustment Setting | Touch screen current setting |
| System | |
| Overall Efficiency | ≥90% |
| Withstand Voltage Insulation Resistance | AC 1800V / 1min, 20MΩ |
| Cooling | Forced air cooling |
| Noise | <60dB (1m in front of unit) |
| CT Accuracy | 0.2 class |
| Protection Class | IP20 |
| Working Environment | |
| Operation Mode | Long-duration temperature rise test |
| Ambient Temp | -10°C ~ 50°C |
| Humidity | 0~90% (non-condensing) |
| Altitude | Below 1500m |
| Dimension & Weight | |
| Structure | Integrated unit |
| Size | To be confirmed |
| Weight | Approx. 3 tons |
| Busbar | Calculated at 1–1.2A per square millimeter |
| Temperature Monitoring | |
| Temperature Measuring Points | 64 channels, expandable |
| Sensor Cable | 5m; PT1000 adopted for high precision |
Standard Configuration
Voltage Regulation Section (Special Process Electric Voltage Regulator)
| Item | Parameter |
|---|---|
| Rated Capacity | 90kVA |
| Phase | Three-phase four-wire |
| Input Voltage | 3-phase 380V |
| Output Voltage | 3-phase four-wire 0–420V |
| Frequency | 50/60Hz |
| Motor Power | ND-4.5 100W |
| Insulation Class | Class B |
| Insulation Resistance | 5MΩ |
| Withstand Voltage Test | 2000V/min |
| Waveform Distortion | ≤0.1% |
| Cooling Method | Air cooling |
The voltage regulator is non-standard equipment. It uses imported carbon brushes, reinforced support frame and high-temperature resistant wires to ensure stable operation under normal temperature.
Current Boost Section
| Item | Parameter |
|---|---|
| Rated Capacity | (30×3) kVA |
| Phase | Three-phase |
| Input Voltage | 3-phase 0–420V |
| Output Voltage | 0–10V per phase |
| Output Current | 3000A per phase |
| Insulation Class | Class B |
| Insulation Resistance | 5MΩ |
| Withstand Voltage Test | 2000V/min |
| Waveform Distortion | ≤0.1% |
| Cooling Method | Air cooling |
Adopts new type iron core, copper output busbar. Primary winding uses copper wire, calculated at 1.2A per square millimeter.
Sampling Section
High-precision 0.2S-class current transformer ensures high precision for current sampling.
Display Section
High-precision 0.2-class LCD display.
Alarm Functions
Overcurrent alarm, upper/lower limit alarm, overvoltage relay, overtemperature alarm.
Output Time Control
Timed output control function to guarantee safe operation.
PLC: Siemens brand; Touch screen: Weinview (Taiwan, China)
Power Compensation
Improves power factor and operational efficiency.
FAQ for High Current Temperature Rise Tester
Q1: What products can this tester perform temperature rise tests on?
A1: It is applicable to low-voltage switchgear assemblies complying with GB 7251.1, such as GCK, MNS cabinets, circuit breakers, bus ducts, cable accessories and other conductive components. It supports multi-unit parallel running for temperature rise experiments.
Q2: What test modes are available for the HF-HG-310?
A2: Two modes: fully automatic test and manual test. Users only need to preset test current and duration. The system features an automatic current stabilization system to realize unattended testing.
Q3: What is the maximum output capacity and current of the equipment?
A3: Rated capacity reaches 90kVA, with 3 groups of AC 3000A three-phase output. It supports simultaneous three-phase output, single-phase independent output and separate phase output.
Q4: How many temperature measurement channels are equipped as standard? Can it be expanded?
A4: Standard configuration is 64 temperature measuring channels with PT1000 high-precision sensors. The channels can be upgraded according to customer demands.
Q5: Does the system support multiple constant current sources parallel operation?
A5: Yes. It meets the test requirements of multi-output control cabinets, and can realize synchronous operation of multiple constant current sources for temperature rise testing. Relevant certification documents can be provided.
Q6: What protective functions does the machine have?
A6: It integrates complete protection including overvoltage, overcurrent, overtemperature and phase loss protection. Adopting dual protection of microcomputer control plus mechanical limit switches. The system will trigger auto-alarm and tripping once exceeding limits.
Q7: What is the output current stability accuracy?
A7: Output current stabilization precision is ±0.5%. It adopts 0.2S-class sampling CT and built-in three-phase automatic balancing system, with strong anti-interference capability.
Q8: What’s the operating environment requirement?
A8: Ambient temperature: -10℃ ~ 50℃; humidity: 0~90% non-condensing; altitude ≤1500m. Cooling method is forced air cooling. Noise is less than 60dB.
Q9: Can customized functions or software upgrades be realized?
A9: Yes. We support customized test modules and provide subsequent software upgrade services as required by customers. It also has a built-in power compensation system to boost efficiency.
Q10: Is operation complicated? Does it need extra auxiliary equipment?
A10: Equipped with a 10-inch true-color touch screen, full digital control. No extra auxiliary equipment is required. The software automatically records data and generates reports; data can be exported to computers after tests.
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