Insulation Resistance Tester
The ZWS3015 is a high-performance digital insulation resistance tester (megohmmeter) providing selectable test voltages from 100V to 2500V.
Featuring automatic Polarization Index (PI) and Dielectric Absorption Ratio (DAR) calculations, it serves as an indispensable diagnostic tool for transformers, motors, and high-voltage cables in harsh industrial environments.
Product Overview
The ZWS3015 Digital Insulation Tester is designed for comprehensive electrical insulation diagnostics. It offers multiple test voltage levels (100V, 250V, 500V, 1000V, and 2500V) and can measure insulation resistance up to 100.0GΩ.
Enclosed in a robust, shock-proof, dust-proof, and moisture-proof structure, it adapts flawlessly to severe working environments. It is highly recommended for professionals in power utilities, telecommunications, electromechanical installations, and industrial plant maintenance.
Functions and Value:
1. Comprehensive Measurement Range: Capable of delivering a wide range of test voltages (100V to 2500V) and measuring insulation resistance up to 100.0 GΩ, suitable for a vast array of electrical equipment.
2. Advanced Automated Diagnostics: Automatically calculates the Polarization Index (PI) and Dielectric Absorption Ratio (DAR), allowing engineers to quickly evaluate insulation aging and accumulated moisture without manual math.
3. Multifunctional Testing: Beyond insulation resistance, the instrument accurately measures DC voltage (up to 1000V) and AC voltage (up to 750V), functioning as a versatile diagnostic multi-tool on-site.
4. Robust Data Management: Built-in memory stores up to 500 sets of test data. Equipped with a USB interface and monitoring software, allowing users to effortlessly upload, save, and print comprehensive test reports on a PC.
5. User-Friendly Design: Features a 4-digit super-large LCD screen with a controllable grey/white backlight for clear readability in dark locations. It also includes a low-battery voltage indicator and an auto power-off function to preserve battery life.
6. Industrial Reliability: Built with a large-scale integrated circuit that ensures stable performance, strong anti-interference ability, and strict safety compliance (CAT III 300V, IP54).
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZWS3015 |
| Rated Test Voltage | 100V / 250V / 500V / 1000V / 2500V |
| Insulation Resistance Range | 0.06 MΩ ~ 100.0 GΩ |
| AC Voltage Range | 2.0 V ~ 750 V |
| DC Voltage Range | 2.0 V ~ 1000 V |
| Output Short Circuit Current | ≥ 1.5 mA (at 1000V) |
| PI & DAR Measurement | Supported |
| Data Storage | 500 Groups |
| Interface | USB (with PC monitoring software) |
| Display | 4-digit large LCD screen (73mm x 43mm) with backlight |
| Power Supply | 8 x 1.5V (AA) alkaline batteries |
| Safety & Protection | IP54, CAT III 300V, Over-range “OL” indication |
| Dimension & Weight | 175mm × 112mm × 53mm; approx. 1230g |
Model Selection Guide
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
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Parts List
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
Product Video
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Frequently Asked Questions
Contact our engineers for technical support and application guidance.
The ZWS3015 is ideal for testing the insulation resistance of transformers, motors, high-voltage cables, capacitors, and various insulating materials used in power generation and distribution.
Yes. For long-term absorption processes, the tester automatically records and calculates the Dielectric Absorption Ratio (DAR, usually at 60s/15s or 60s/30s) and the Polarization Index (PI, at 10min/1min), simplifying complex diagnostics.
Absolutely. The instrument stores up to 500 groups of data. Using the included USB communication cable and monitoring software CD, you can upload, review, and print all historical data directly on your PC.
The device has AC and DC voltage measurement modes (AC up to 750V, DC up to 1000V). However, insulation resistance tests must strictly be performed on uncharged (dead) circuits to prevent equipment damage and electric shock.
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