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HF-SA-202 Surge Arrester Leakage Current Tester
This portable surge arrester leakage current tester precisely monitors resistive leakage current of lightning arresters under operating voltage. It quickly diagnoses insulation degradation, internal dampness and faults without power outage, widely used in substations and power distribution systems for routine preventive maintenance.
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This tester is a dedicated instrument for checking the electrical performance of surge arresters. It is applicable to live-line and power-off tests of zinc oxide surge arresters of all voltage classes, enabling timely identification of insulation deterioration, valve plate aging and other hidden faults inside the equipment.
Featuring easy operation and human-machine interface control throughout the whole measurement process, it can measure total current, resistive current, harmonic components, fundamental voltage & harmonics, active power and phase difference of ZnO arresters. The large screen displays real waveforms of voltage and current.
Adopting digital waveform analysis technology alongside harmonic spectrum analysis and digital filtering anti-interference algorithms, it delivers accurate and stable measurements, and precisely calculates the content of fundamental wave and 3rd~9th harmonics.
Adopting digital waveform analysis technology alongside harmonic spectrum analysis and digital filtering anti-interference algorithms, it delivers accurate and stable measurements, and precisely calculates the content of fundamental wave and 3rd~9th harmonics.
Product Features
- Color Touch Screen: 800×480 high-definition colorful touch panel for intuitive human-computer interaction.
- Multiple Synchronization Modes: Supports wired synchronization (with voltage input); voltage reference can also be calculated via angle/current analytical methods without voltage input.
- Live & Power-off Test Compatibility: Works for both energized arrester inspection and laboratory offline tests.
- Large-Scale Sampling: Voltage measuring range: 0–500V; current measuring range: 0–30mA.
- Three-Phase Simultaneous Test: Tests phases A/B/C separately; one group of test data can be stored for three-phase ZnO arresters.
- High Safety: Internal circuit extra-low voltage (<8.4V); fully isolated current & voltage sensors guarantee safe operation.
- Optional Voltage Acquisition Modes: Takes bus voltage as reference; optional induction plate electric field sampling for convenient live-line voltage collection, compatible with substation cabinet bus voltage.
- Optional Current Collection Modes: Leakage current can be sampled via arrester counter terminals, or via current clamps on arrester grounding leads (optional accessory).
- Built-in Lithium Battery: Standard high-capacity lithium-ion battery, ideal for sites without mains power supply.
- High-Speed Sampling: Fast sampling frequency and advanced digital signal processing offer strong anti-interference capability and ultra-high measurement precision.
- Internal Calendar Clock: Embedded real-time clock for timestamping test reports and stored data.
- Mass Data Storage: Large-capacity onboard memory supports data browsing and power-off data retention.
- USB Data Export: Equipped with USB port to export test records as word files.
- Bluetooth Monitoring & Upload (Optional): Matched with dedicated Android APP, enabling remote control, data upload and Word report generation via smartphones/tablets.
- Customizable UI Appearance: Adjustable screen brightness, standby time; available blue/black waveform background themes.
- Built-in Wiring Diagrams: Internal illustrated wiring guides for on-site construction reference.
- Chinese Test Information Input: Manually input substation name, equipment ID, staff info and remarks to label and archive test data conveniently.
- Bilingual Interface (Optional): Swappable Chinese/English UI for global field applications.
- Portable Design: Main unit housed in dustproof & shockproof integrated case; compact size and light weight for easy carrying.
- Multi-Communication Protocols (Optional): Supports RS232, RS485 and Bluetooth communication; protocol standards vary by region, specify requirements before ordering.
- Customizable Functions: Standard version excludes extended functions, all custom functions available on demand.
Standard & Optional Configuration List
| Item | Supply Type | Item | Supply Type |
|---|---|---|---|
| Color Touch Screen | Standard | USB Data Export | Standard |
| Lithium Battery | Standard | Upper Computer Control & Data Upload | Standard |
| RS232 MODBUS Communication | Standard | State Grid Communication Protocol | Optional |
| External Protective Case | Optional | Extended Measuring Range | Optional |
| 1 Set of Current Clamp | Optional | Chinese & English Switch | Optional |
| Bluetooth Control & Upload | Optional | — | — |
Technical Specifications
| Category | Item | Specification |
|---|---|---|
| Power Supply | Power Supply Mode | Built-in lithium battery pack or external 8.4V DC adapter |
| Measuring Ranges | Leakage Current | 0~20mA (extendable); Optional current clamp sensor: 0~20mA |
| Voltage | 30~250V (extendable); Optional electric field input range: 30kV/m ~ 300kV/m | |
| Phase Angle | 0° ~ 360° | |
| Resistive Current | 0~20mA (extendable) | |
| Capacitive Current | 0~20mA (extendable) | |
| Measurement Accuracy | Current | When total current >100μA: ±5% reading ±1 digit |
| Voltage | When reference voltage >30V: ±5% reading ±1 digit | |
| Measurable Parameters | Leakage Current | Total current waveform, fundamental RMS value, peak value |
| Resistive Component of Leakage Current | Waveform, RMS values of 1st/3rd/5th/7th/9th harmonics, positive peak Ir+, negative peak Ir- | |
| Capacitive Current | Harmonics | |
| Voltage | Voltage waveform, voltage RMS value | |
| Electrical Parameters | Phase difference, power consumption | |
| Lithium Battery Parameters | Charging Duration | ＞2.5 hours |
| Continuous Working Time | ＞7 hours | |
| Intermittent Standby Time | ＞7×24 hours | |
| Host Dimensions & Weight | Host Dimensions | 42cm×34cm×18cm |
| Net Weight of Main Unit | 7.0 kg |
FAQ: Surge Arrester Leakage Current Tester
Q1: What is the core function of the Surge Arrester Leakage Current Tester?
A1: It measures total leakage current, resistive & capacitive current components and harmonic values of zinc oxide surge arresters, to judge insulation aging, internal dampness and valve plate degradation without removing arresters from service.
Q2: Can this device carry out both live-line energized testing and offline power-off testing?
A2: Yes. It supports two working scenarios: on-site live detection for running arresters and laboratory offline calibration tests, fully adapting to daily power system preventive maintenance.
Q3: What synchronization modes are available for voltage reference collection?
A3: Three options are provided: wired voltage synchronous sampling, angle calculation synchronization without voltage wiring, and current analysis synchronization, flexible for various complicated substation wiring environments.
Q4: Is it safe for field live-line measurement?
A4: Absolutely safe. The internal circuit voltage is lower than 8.4 V; current and voltage sensors are completely electrically isolated, eliminating electric shock risks for operators during live tests.
Q5: What ways can be used to collect leakage current signals?
A5: Two optional collection methods: sampling via arrester counter terminals directly, or clamping the arrester grounding wire with an external current clamp for non-intrusive signal acquisition.
Q6: Does the tester work well in harsh electromagnetic interference substation environments?
A6: Yes. It adopts high-speed sampling plus digital filtering and harmonic spectrum analysis technologies, featuring strong anti-interference performance to guarantee stable and accurate measuring results under strong electromagnetic fields.
Q7: How long can the built-in lithium battery last on a full charge?
A7: Charging time needs more than 2.5 hours; continuous working time exceeds 7 hours, and intermittent standby time can reach over 7 consecutive days, suitable for all-day outdoor field operations without mains power.
Q8: Can test data be exported and printed as formal reports?
A8: Yes. Test records can be stored onboard, exported to USB flash drive in Word format; optional Bluetooth function enables data upload, remote control and report generation via mobile phone APP.
Q9: Is bilingual Chinese & English interface available?
A9: The Chinese-English switching function is optional, which meets the operation demands of overseas power projects and international EPC clients.
Q10: Can it test three-phase A/B/C surge arresters in one set of measurement?
A10: Supported. It can test phase A, B and C separately, and store one complete group of three-phase test data for comparison analysis conveniently.
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