Zinc Oxide Arrester Tester
Wuhan Goldhome Hipot Electrical Co., Ltd. was established in 2008, located in Economic and Technical Development Zone, working area more than 10000 square meters.We are professional OEM, ODM, OBM Manufacturer which is engaged in the research, development, sale and service of High Voltage Testing Equipment including: Resonant Test System, High Voltage Tester,Transformer Tester , Primary Current Injection Tester, Impulse Voltage Generator ,Circuit Beaker Tester, Relay Protection Tester, Cable Fault Locator, SF6 Test Analyzer, Transformer Oil Testing Instruments,etc.
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Product Applications
Our products are extensively utilised across various sectors including power engineering, transportation, power plant construction, railway infrastructure, petrochemicals, metallurgy, and coal mining.
Sales Markets
Cumulative exports have reached Indonesia, India, Pakistan, Vietnam, the Philippines, Saudi Arabia, the United Arab Emirates, Egypt, Turkey, Israel, Brazil, Germany, the United States, Australia, and other countries and regions. With over 150 distributors worldwide and more than 10 overseas service offices, we have successfully opened up global markets.
Honors, patents, certificates
Our products have passed inspections by national and provincial energy authorities and obtained CE certification. Additionally, the company has secured ISO 9001:2015 Quality Management System, and SGS certifications. Awarded the title of ‘National High-Tech Enterprise’. Holds over 20 patented technologies.
Our Service
We pledge to treat every client with integrity and equality, regardless of contract size or whether they are domestic or international, new or existing customers, providing professional consultation and advice. Goldhome provides professional installation, commissioning and training for users' workers, ensures that users can get familiar with operation methods and put machines into use as soon as possible.
What is Zinc Oxide Arrester Tester
The zinc oxide arrester tester is a specialised instrument designed to assess the electrical performance of zinc oxide arresters (MOA). It primarily evaluates the arrester's degree of ageing, moisture ingress, and operational condition by measuring key parameters such as resistive current, total current, and power consumption. This makes it an essential tool for conducting preventive testing and condition-based maintenance within power systems.
Key Features of Zinc Oxide Surge Arrester Tester
1. Testing without equipment disassembly or power interruption: Most models support live testing without affecting power supply, offering exceptional on-site convenience.
2. Direct measurement of resistive current, total current, and harmonics: Accurately identifies moisture ingress, ageing, and degradation in surge arresters – far more reliable than visual inspection.
3. Robust anti-interference capability for field/substation use: Specifically addresses high-interference environments and inaccurate data collection.
4. Simple operation with one-button results: Automated calculation and analysis eliminate manual conversion, enabling novice users to conduct tests.
5. Data storage, printing and upload capabilities: Facilitates inspection reports, acceptance documentation and ledger management.
6. Compact size and lightweight design: Ideal for line inspections, elevated work and field operations.
7. Safe and reliable with comprehensive protection: Prevents equipment damage from wiring errors or overcurrent, safeguarding both instrument and operator.
Working Principle:
Under normal conditions, zinc oxide arresters exhibit minimal leakage current, primarily comprising capacitive current. Upon exposure to moisture, ageing, or damage, a distinct resistive current becomes evident.
Operating Principle
Capturing the leakage current of the arrester
Internal circuitry decomposes the current into:
Capacitive current (normal component)
Resistive current (key indicator for condition assessment)
Through harmonic analysis and anti-interference algorithms, grid noise is filtered out to directly calculate: resistive current magnitude, total current, and 3rd/5th harmonic components, Based on these values, the arrester condition is determined as: normal; aged; dampened; failed.
Primary Functions of the Zinc Oxide Surge Arrester Tester
1. Online/offline testing of zinc oxide surge arresters
2. Measurement of three-phase/single-phase resistive current, total current, and capacitive current
3. Measurement of harmonic components (3rd and 5th harmonics)
4. Synchronous measurement of reference voltage
5. Automatic elimination of electric field interference
6. Data storage, viewing, printing, and uploading
7. Dual AC/DC operation / Rechargeable battery power
8. Built-in overcurrent and reverse connection protection
Alternative names
-
Zinc Oxide Arrester Tester
- MOA Tester
- Zinc Oxide Arrester Analyzer
- Surge Arrester Tester
- MOA On-site Tester
- MOA Live Tester
- MOA Resistive Current Tester
- MOA Leakage Current Tester
- Three-phase MOA Tester
- MOA DC Parameter Tester
- Arrester Tester
- Zinc Oxide Arrester DC Parameter Tester
- Live Line Zinc Oxide Arrester Teste
Successful Case Display
Goldhome is well worth your consideration.
FAQ
I. Fundamentals and Definitions
Q: 1. What is a zinc oxide arrester tester?
A: A specialised electrical testing instrument used to assess the operational status, insulation performance, and moisture/ageing condition of zinc oxide arresters. It primarily measures parameters such as resistive current, leakage current, and harmonics to determine arrester compliance.
Q: 2. What does it primarily measure?
A: Total current, resistive current, capacitive current
3rd and 5th harmonic components
Determines arrester condition: normal, damp, aged, degraded, failed
Q: 3. Can testing be performed under live conditions?
A: Yes. Both online live testing and offline de-energised testing modes are supported.
Q: 4. Is a reference voltage connection mandatory?
A: PT reference voltage connection: Provides highest accuracy and strongest interference resistance.
No reference voltage: Synchronisation-free mode can be used, enabling normal testing.
Q: 5. Can all three phases be tested simultaneously?
A: Simultaneous three-phase testing is supported. A single wiring connection completes measurements for phases A/B/C, ensuring high efficiency.
Q: 6. How accurate is the data, and what is the interference resistance like?
A: Utilises harmonic analysis combined with hardware anti-interference circuits. Data remains stable and reliable even in substation high-voltage environments, preventing misjudgements.
Q: 7. Does it feature data storage and printing?
A: Yes. Can store thousands of data sets, supports USB export and Bluetooth printing, generating test reports directly.
Q: 8. How do I use the current clamp?
A: Clamp the current clamp onto the arrester's grounding lead. Ensure correct orientation to capture leakage current without disconnecting the lead.
Q: 9. Is power disconnection required during testing?
A: Online mode: No power disconnection required
Offline / DC testing: Power disconnection required
Q: 10. What voltage levels are applicable?
A: Applicable to zinc oxide surge arresters in distribution and transmission systems operating at 10kV, 35kV, 110kV, 220kV, and similar voltage levels.
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