Product Introduction
Product Parameter
|
|
HLY-200C |
HLY-200A |
HLY-100A |
HLY-100B |
HLY-100C |
|
Test range |
0～2999.9μΩ |
0～1999 μΩ |
0～1999 μΩ |
1～1999μΩ |
0～2999.9μΩ |
|
Resolution |
0～99.99, 0.01μΩ 100.0～2999.9, 0.1μΩ |
1μΩ |
1μΩ |
1μΩ |
0～99.99, 0.01μΩ 100.0～2999.9, 0.1μΩ |
|
Measured current |
DC 50A, 100A, 150A, 200A fixed output |
DC 50A,100A, 150A, 200A fixed output |
DC 0~100A |
DC 50A,100A Two-gear output |
DC 50A, 100A fixed output |
|
Accuracy |
±(0.5% rd+2d) |
0.5%±1d |
0.5%±1d |
0.5%±1d |
±(0.5% rd+2d) |
|
Continuous working time |
5s～599s |
5s～599s |
5s～599s |
5s～599s |
5s～599s |
|
Display |
LCD |
LCD |
LCD |
LCD |
LCD |
|
Connection |
USB |
USB |
USB |
USB |
USB |
|
Power supply |
AC220V±10% 50Hz |
AC220V±10% 50Hz |
AC220V±10%,50Hz |
AC220V±10%,50Hz |
AC220V±10% 50Hz |
|
Power |
1200W |
|
|
|
600W |
|
Max storage |
200 |
200 |
200 |
200 |
200 |
|
Service conditions |
Temperature -10℃～40℃, humidity:≤80%RH |
Temperature -10℃～40℃, humidity:≤80%RH |
Temperature:-10℃～40℃;humidity：≤80%RH |
Temperature:-10℃～40℃;humidity：≤80%RH |
Temperature -10℃～40℃, humidity:≤80%RH |
|
Printer |
Built-in |
No |
No |
No |
Built-in |
|
Dimension |
380×310×260 mm |
370×320×260 mm |
300×290×220mm3 |
300×290×220mm3 |
360×300×250 mm |
|
Weight |
11Kg(not including accessory) |
9.6Kg(not including accessory) |
6kg(not including accessory) |
6kg(not including accessory) |
8Kg(not including accessory) |
Product Feature And Application
High-Precision Contact Resistance Tester (200A) – Product Features
1. High-Stability Continuous Current Output
Utilizing advanced constant-current power technology, this unit provides stable and continuous high-current output. Unlike traditional pulsed power supplies that only offer instantaneous current, our system effectively pierces contact oxide layers to ensure laboratory-grade accuracy. Even under strong electromagnetic interference, the digital display remains rock-solid with a ±1 digit stability, ensuring excellent reproducibility.
2. Ultra-High Resolution & Precision
Engineered for extreme accuracy, the tester features a dual-channel, high-speed 16-bit Sigma-Delta (Σ-Δ) ADC combined with advanced digital signal processing (DSP). This enables an industry-leading measurement resolution of up to 0.01μΩ, making it ideal for detecting even the most minute degradation in switchgear contacts.
3. Intelligent Auto-Ranging & Thermal Protection
Driven by a high-performance microprocessor, the system automatically selects the optimal measurement range based on signal strength to guarantee maximum precision. For enhanced reliability, an integrated over-temperature protection circuit automatically halts output if the device exceeds its rated thermal limit, ensuring both operator and hardware safety.
4. Industrial-Grade Build with Temperature Compensation
Built with premium imported components and a sophisticated temperature-compensation circuit to eliminate thermal drift in field conditions. The unit's ruggedized design is further enhanced by military-grade connectors, providing superior shock resistance and reliable connectivity in harsh substation environments.
5. Versatile High-Power Output Options
Designed for flexibility, the device offers selectable test currents of 50A, 100A, 150A, or 200A. With adjustable measurement durations spanning from 5s to 599s, it provides more testing power and versatility than standard equipment, catering to diverse international testing standards.
6. Intuitive HMI & Real-time Reporting
Features a user-friendly Human-Machine Interface (HMI) with a high-precision rotary encoder for rapid data entry. The system includes an integrated real-time clock for timestamping and a built-in thermal printer, allowing for immediate, on-site documentation of test results.
7. Seamless USB Data Management & Analysis
Equipped with a high-speed USB interface for effortless data export to U-disks. Combined with our powerful PC management software, users can perform advanced data analysis, trend tracking, and generate comprehensive maintenance reports for long-term asset management.
8. Compact, Field-Portable Design
Optimized for the mobile engineer, the instrument features a highly compact volume and lightweight build. Its extreme portability makes it the perfect solution for field inspections at remote substations, wind farms, and industrial plants.
Prodection Details
Accessory
|
Serial Number |
Name |
Amount |
|
1 |
Mainframe |
one |
|
2 |
Test line (high current line 6m*2, high current test clps *2, voltage test line 6m*2) |
one |
|
3 |
Ground lead |
one |
|
4 |
10A Fuse |
three |
|
5 |
Accessory package |
one |
|
6 |
AC 220V Power line |
one |
|
7 |
Specification |
one |
|
8 |
Inspection Report |
one |
|
9 |
Certification |
one |
Production line for CRM
FAQ
Q: The contact resistance of a circuit breaker is often as low as 30 μΩ. Why should I worry if it rises to 100 μΩ? It's still a tiny number.
A: It is a matter of Thermal Runaway driven by the P = I²R law.
The Math: In a 2000A system, a 50 μΩ resistance generates 200 Watts of heat at a single contact point. If it rises to 150 μΩ, it generates 600 Watts.
The Consequence: Because GIS and breakers are sealed, this heat cannot escape. It causes the metal to expand, oxidizes the silver plating, and decomposes the SF6 gas into acids.
The Verdict: A small rise in μΩ is the "first symptom" of a catastrophic equipment failure.
Q: My digital multimeter has a "low resistance" mode. Can I use it to check the busbar joints?
A: No. A multimeter uses a tiny sensing current (milliamps), which is useless for power equipment.
The Oxide Film: Contact surfaces naturally develop a microscopic layer of oxidation. A multimeter's low voltage cannot "break through" this film, leading to a false-high or fluctuating reading.
The Breakthrough: A high-current source (100A+) creates enough potential difference to effectively "pierce" the surface contamination, establishing a true metal-to-metal measurement that reflects the equipment's actual performance under load.
Standard Rule: IEC 62271-1 specifies a minimum of 50A DC for these tests, with 100A+ being the industry preferred standard for accuracy.
Q: My tester shows 45 μΩ. Is that good or bad?
A: There is no single "magic number." You must use the "Three-Comparison" strategy:
Factory Baseline (Birth Record): Compare the reading to the original factory test report. It should not exceed 1.2 to 1.5 times the factory value.
Phase-to-Phase: Compare A, B, and C phases. They should be within 10-20% of each other. If one phase is 80 μΩ and the others are 40 μΩ, the 80 μΩ phase is failing.
Manufacturer Limits: Check the manual. For example, a 1250A breaker might have a limit of 60 μΩ, while a 3150A breaker might be limited to 35 μΩ.
About Us
Wuhan Huayi Electric Power Technology Co., Ltd
HUAYI is a professional manufacturer in China that researches and manufactures electric testing equipment. Established in 2005, the company is one of the earliest manufacturers of high-voltage testers in China. HUAYI insists on developing and marketing its products independently and makes efforts to improve product quality, reduce costs, and enhance efficiency.
HUAYI is committed to preventative, maintenance, troubleshooting, and commissioning. With ISO-certified professional engineering support and Satisfactory customer service, our brand has been recognized and supported by a wide range of users.
large enterprise scale
Efficient and precise processing and testing equipment. We have our factory, engineers, and service team.
Standardized Production
Passed ISO9001 certification and obtained relevant patent certificates.
High-Quality Customized Services
No intermediate links, providing one-stop service from design, processing, mold trial to mass production.
Our certification
Our engineering team
Customers visiting
Our workshop
Our Service
Create a comprehensive solution for customers
01
Pre-sale service
Conduct product consultation, product promotion, and marketing activities, and provide technical support for customer needs.
02
Delivery service
Packing with wooden cases, provide different solutions of shipping way, accept different payment way. Save shipping cost and make sure the products arrive well.
03
After-sales service
Installation and commissioning of specific products; Respond to consumer questions, answer consumer inquiries, and deal with consumer comments.
FAQ
1. Delivery： Fast delivery and Flexible mode of transportation
2. Payment: Choose payment terms and a convenient payment method
3. Sales service: 24-hour online contact, choose the right model of equipment according to your request, give the best offer, support customization
4. Warranty period: All machine quality guarantees for one year, and lifetime technical support for you. Online response to customers' technical problems.
Please get in touch with us if you have any questions about products, prices, technology solutions, or services. We will always be with you.
Our address
Gaoxin 4th Road, No.40, Wuhan City, China
Phone Number
(86)-18062012971/+8618064115448 WhatsApp
sales@sinohipot.com/ tina@sinohipot.com
One-stop high voltage test equipment Factory in China
Send your inquiry about test equipment to us and experience the professional solutions it can have on your business or brand. With our technology solutions and products, you can elevate your products, captivate your customers, and unlock new opportunities for growth and success in the electric industy.
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