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HF-WC-611 Three Phase Thermal Relay Tester
This Three Phase Thermal Relay Tester outputs stable 0~30A/300A three-phase current continuously. With Class 0.5 precision and wide timing scope, it supports multi-relay serial calibration and automatic contact detection for power industry field calibration work.
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The HF-WC-611 three-phase thermal relay tester is a new-generation testing instrument developed by our company based on user feedback collected nationwide and years of practical experience. It is mainly used for setting and calibrating all types of thermal relays and motor protection devices. Featuring rational design, easy operation and large output power, it is widely applied in electrical testing sites of power systems, railways, petrochemical, metallurgy, mining and other industrial enterprises.
Features & Main Functions
- Capable of long-term continuous current output ranging from 0~30A or 0~300A;
- Balanced three-phase current output with fine adjustment function;
- Balanced three-phase voltage output with fine adjustment function;
- Synchronously test the operating time of thermal relays, thermocouples and motor protectors;
- Automatically identify normally open (NO) and normally closed (NC) contacts;
- Calibrate multiple units connected in series simultaneously to greatly improve working efficiency;
- Equipped with 220V auxiliary power supply function.
Technical Specifications
- Input Power Supply: AC 380/220V, 50Hz, 3-phase 4-wire system
- Meter Accuracy Class: 0.5
- Output Current: 3×30A or 3×300A
- Rated Power: 2.5kW
- Timing Range: 0.01S ~ 99999.999S
- Net Weight: 60kg
Simplified Company Advantages
Core Product Strengths
- Our Three-Phase Thermal Relay Tester delivers stable balanced 3-phase current & voltage (0~30A/300A) with fine adjustment, supporting long-hour continuous testing.
- 0.5 accuracy grade + wide timing range ensures precise calibration for thermal relays and motor protectors.
- Auto NO/NC contact recognition & series multi-unit calibration greatly improve field working efficiency.
- Built-in 220V auxiliary power supply, 2.5kW high power for harsh industrial test conditions.
Factory & Brand Edge
- Professional power test equipment manufacturer with rich project experience, all items pass FAT inspection before shipment.
- CE & ISO certified, widely used in power plants, railways, petrochemical and mining industries worldwide.
- OEM & ODM customization available to meet your on-site testing needs.
Service Benefits
- Free pre-sales technical consultation and solution design.
- Complete accessories delivered together; 2-year warranty plus lifelong technical support.
- Factory direct supply, competitive price vs Western brands with equivalent performance.
Super Short Bullet Points
✔ Stable long-time three-phase current output
✔ 0.5 high precision measurement
✔ Multi-relay simultaneous calibration
✔ CE certified manufacturer
✔ 2-year warranty & global after-sales service
✔ 0.5 high precision measurement
✔ Multi-relay simultaneous calibration
✔ CE certified manufacturer
✔ 2-year warranty & global after-sales service
FAQ | Three-Phase Thermal Relay Tester
Q1: What current output ranges does this three-phase thermal relay tester support?
A: It supports two long-term continuous three-phase balanced current outputs: 0~30A and 0~300A, equipped with fine-tuning adjustment. Balanced three-phase voltage output with fine adjustment is also available.
Q2: What is the measurement precision grade of the tester?
A: The meter accuracy class is 0.5, fully compliant with IEC power industry calibration standards to guarantee accurate test results.
Q3: What is the timing range for recording operation action time?
A: Timing range: 0.01s ~ 99999.999s. It can precisely capture the tripping time of thermal relays, thermocouples and motor protection devices.
Q4: Is it available to calibrate multiple thermal relays simultaneously?
A: Yes. Multiple thermal relays can be connected in series for synchronous testing, which greatly improves on-site maintenance efficiency.
Q5: Can the device automatically identify NO and NC contacts?
A: Yes. The tester automatically recognizes normally open and normally closed contacts, eliminating manual checking and judgment.
Q6: What is the function of the built-in 220V auxiliary power supply?
A: The integrated 220V auxiliary power supply energizes tested devices during field tests, so no extra external power source is needed.
Q7: Where can this tester be applied?
A: It is widely used for electrical calibration in power substations, railway systems, petrochemical plants, metallurgy factories, mines and various industrial electrical maintenance departments.
Q8: What is the input power requirement of the equipment?
A: Input power: AC 380/220V, 50Hz, 3-phase 4-wire; rated power: 2.5kW, stable enough for heavy-load test conditions.
Q9: How much does the whole machine weigh?
A: The net weight is 60kg, mainly designed for workshop and field routine testing. Lightweight portable customization is acceptable on request.
Q10: Do you have international export certifications?
A: All our testers are certified with CE and ISO, meeting global electrical safety standards and suitable for worldwide export.
Q11: Do you offer OEM & ODM customization services?
A: Sure. We can customize current ranges, panel layouts, appearances and extra functions based on your actual testing requirements.
Q12: What is your warranty and after-sales policy?
A: We offer a 2-year global whole-machine warranty, lifelong free technical guidance, remote debugging and long-term spare parts supply. Free pre-sales technical solution consultation is provided as well.
Q13: Are all supporting accessories included in delivery?
A: Each set is delivered with complete accessories: test cables, user manual, calibration certificate and shockproof export packing case. The device can be put into use right after arrival.
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