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GDYZ-302W Wireless Zinc Oxide Arrester Live Tester

GDYZ-302W Wireless Zinc Oxide Arrester Live Tester

GDYZ-302W Digital Intelligent All-Wireless Zinc Oxide Surge Arrester Live Tester with Clamp-On Current Sensor, 400m Wireless Transmission, Insulating Rod Compatible, for Pole-Mounted Arrester On-Line Detection.

Description
Specifications
Applications
Advantages
FAQ
Recommended Products

Description

GDYZ-302W is a professional all-wireless zinc oxide surge arrester (MOA) live tester designed for quick on-line detection of pole-mounted and tower-mounted arresters in 10kV~220kV transmission lines, distribution networks and substations. It strictly complies with DL/T 987-2018, GB 11032-2010 and IEC 60099-4:2014 standards, adopting innovative split all-wireless design consisting of a handheld host and a lightweight detector, eliminating the need for climbing poles and long cable laying.

The instrument features high-precision clamp-on current sensor with 0.001mA~300mA ultra-wide measurement range and ±1% industry-leading accuracy, accurately capturing tiny leakage current changes. The 400 meters ultra-long wireless transmission distance allows operators to test arresters safely from the ground. The detector can be directly connected to an insulating rod, enabling non-contact testing of high-altitude arresters without climbing, significantly improving work safety and efficiency.

Specifications

Parameter	Specification
Compliance Standards	DL/T 987-2018, GB 11032-2010, IEC 60099-4:2014, DL/T 474.5-2006
Structure	Split all-wireless design (handheld host + detector)
Wireless Transmission Distance	≥400 meters (open area, unobstructed)
Insulating Rod Interface	Φ32mm standard interface
Current Measurement Range	0.000mA ~ 300mA AC (True RMS)
Current Resolution	1μA (0-1mA); 0.01mA (1-10mA); 0.1mA (10-100mA); 1mA (100-300mA)
Current Accuracy	±1% reading ± 8 digits (23℃±5℃, below 80%RH)
Voltage Reference Modes	Wireless PT reference, no-PT software reference, manual voltage input
Measurement Parameters	Full current, resistive current (fundamental + 3/5/7 harmonics), capacitive current, phase difference, power consumption
Waveform Display	Real-time voltage and current waveform display
Display	5-inch 800×480 color capacitive touch screen
Language Support	Chinese / English bilingual
Data Storage	1000 groups (with time stamp, parameters and waveforms)
Communication Interface	USB 2.0 (U-disk export)
Power Supply	Host: 7.4V/2000mAh lithium battery; Detector: 7.4V/2600mAh lithium battery
Battery Life	≥4 hours continuous working time
Charging Time	≤4 hours
Operating Temperature	-10℃ ~ +50℃
Humidity	≤85% RH (non-condensing)
Host Dimensions (L×W×H)	210×140×60mm
Detector Dimensions (L×W×H)	180×120×50mm
Weight	Host: ~1.2kg; Detector: ~0.8kg
Enclosure	ABS+PC engineering plastic with rubber protective cover

Applications

Core Test Objects

Pole-mounted arresters: 10kV~35kV distribution line pole-mounted zinc oxide arresters
Tower-mounted arresters: 110kV~220kV transmission line tower-mounted zinc oxide arresters
Substation arresters: Indoor and outdoor zinc oxide arresters in substations
Other equipment: Lightning protection arresters in industrial plants, communication base stations and wind farms

Typical Usage Scenarios

Power companies: Distribution network and transmission line arrester routine patrol inspection, live detection and fault diagnosis
Transmission line operators: Line arrester regular inspection and performance evaluation
Substation maintenance teams: Substation arrester quick test and emergency maintenance
Third-party testing institutions: Arrester certification testing, safety assessment and on-site calibration services

Advantages

Compliance with Latest Industry Standards

Fully meets DL/T 987-2018, GB 11032-2010, IEC 60099-4:2014 → test results are globally recognized

Industry-Leading All-Wireless No-Climbing Design

Insulating rod compatible high-altitude test, no climbing required → eliminates falling hazards and reduces test time by 80%

0-300mA Ultra-Wide Range & ±1% High Accuracy

Covers all types of arresters, 2× higher accuracy than ordinary testers → accurately identifies early hidden defects

400 Meters Ultra-Long Wireless Transmission

Stable communication up to 400 meters, no cable laying required → suitable for long-distance testing in large substations and transmission lines

Dual-Purpose Function

Can be used as both arrester tester and ultra-precision clamp-on leakage current meter → one instrument meets multiple test requirements

FAQ

Q: How does the no-climbing test work?

A: GDYZ-302W's detector is designed with a standard Φ32mm interface that can be directly connected to an insulating rod. Operators only need to extend the insulating rod to clamp the detector on the arrester grounding wire from the ground. The detector will automatically measure the leakage current and transmit the data wirelessly to the handheld host. The entire test process takes less than 1 minute per arrester, no climbing required, ensuring operator safety.

Q: Can it test arresters without PT voltage signal?

A: Yes. GDYZ-302W supports three voltage reference modes:

Wireless PT reference: Uses wireless PT sampling box to obtain voltage signal
No-PT software reference: Uses software algorithm to generate virtual voltage reference based on current waveform
Manual voltage input: Manually input the system voltage for calculation
This makes it suitable for various field conditions where PT voltage is unavailable.