High Voltage Insulation Tester
The ZWS3045 is a heavy-duty, high-voltage insulation resistance tester designed for demanding power grid applications.
Capable of outputting up to 15KV with an outstanding 6mA short-circuit current, it accurately measures ultra-high insulation resistance up to 50TΩ while offering advanced diagnostic functions like PI, DAR, and RAMP testing.
Product Overview
The ZWS3045 (15KV) Digital High Voltage Insulation Tester is an elite diagnostic instrument built for substations, power plants, and large-scale industrial facilities.
Engineered to test high-capacity transformers, extensive cable networks, and heavy electromechanical equipment, it rapidly charges capacitive loads thanks to its ≥ 6mA short-circuit current.
Enclosed in a rugged IP54-rated shell that is shockproof, dustproof, and moisture-proof, it guarantees reliable operation in the harshest outdoor environments.
Functions and Value:
1. Ultra-High Range & Current: Delivers up to 15KV test voltage and measures insulation resistance up to 50 TΩ (Tera ohms). The powerful ≥ 6mA short-circuit current ensures fast charging and accurate testing of large-capacity loads.
2. Advanced Diagnostic Modes: Automatically calculates Polarization Index (PI) and Dielectric Absorption Ratio (DAR). It also features RAMP (Oblique Wave) and FR (Filter) test modes to detect insulation breakdown limits precisely.
3. Step-Adjustable Voltage: Unlike standard testers with fixed outputs, the ZWS3045 allows users to step-adjust the voltage (e.g., setting exactly 12KV) to perfectly match specific testing requirements.
4. 5-in-1 Testing Capabilities: In addition to insulation resistance, the device precisely measures DC voltage (up to 1000V), AC voltage (up to 750V), DC leakage current (from picoamps to 6mA), and capacitance (up to 50uF).
5. GUARD Terminal Technology: Equipped with a dedicated GUARD shield port that bypasses surface leakage current on dirty or damp insulators, ensuring zero-error measurements on highly resistive materials.
6. Intelligent Data Management: Stores up to 500 groups of test data. Users can connect the tester to a PC via USB to monitor, download, and compile professional test reports using the included software.
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZWS3045 |
| Max Test Voltage | 15KV (Step-adjustable) |
| Insulation Resistance Range | 0.01 MΩ ~ 50 TΩ |
| Short-Circuit Current | ≥ 6mA (at 15KV) |
| DC Current Range | 100 pA ~ 6 mA |
| Capacitance Range | 10 nF ~ 50 uF |
| AC / DC Voltage Range | AC: 0~750V / DC: 0~1000V |
| Diagnostic Functions | PI, DAR, RAMP, FR |
| Data Storage | 500 Groups + USB PC Interface |
| Display | 4-digit large LCD (108mm x 65mm) with backlight |
| Power Supply | 10.95V 2600mAh rechargeable lithium battery |
| Safety Standards | IEC61010-1, CAT III 300V, IP54 |
| Dimension & Weight | 240mm × 188mm × 85mm; 2.75kg |
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.
When testing ultra-high insulation (like cables or dirty insulators), surface moisture and dirt can cause leakage currents, leading to reading errors. The GUARD terminal safely bypasses this surface current directly to the ground, ensuring you only measure the true internal insulation resistance.
The RAMP test gradually increases the output voltage in steps up to your final target voltage. This allows engineers to observe how the insulation behaves as stress increases, helping to identify potential breakdown points without damaging the equipment.
Yes. The ZWS3045 outputs a robust short-circuit current of 6mA at 15KV. This high current is specifically designed to rapidly charge large capacitive loads (like long power cables and large power transformers), significantly reducing the time required to complete a test.
Absolutely. The instrument features a step-voltage adjustment function. Using the directional buttons, you can increase or decrease the output voltage in specific increments (e.g., 50V or 500V steps), allowing you to test at customized voltages like 12KV.
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