ZGF DC Hipot Tester
Product Introduction
The ZGF DC Hipot Tester is a specialized high-voltage generating equipment designed for on-site testing in the power equipment field. It features reliable protection functions, including overvoltage, overcurrent, and zero-closing protection, and provides accurate 0.75 times output voltage indication for precise measurement and control.
Technical characteristics and advantages of DC high-voltage generator
Stable output: using high-frequency voltage doubling circuit or intermediate frequency inverter technology, with small voltage fluctuations and high testing accuracy.
Protection function: Equipped with overvoltage, overcurrent, zero start, grounding protection, etc., to ensure safe operation.
Portability and Integration: The miniaturized design facilitates on-site use, and some models integrate control, measurement, and protection functions into one.
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Technical Parameters
| Spezifikationen | 200/2 | 200/3 | 200/5 | 300/2 | 300/3 | 300/5 | 400/2 | 400/3 | 400/5 |
| Rated voltage（kV） | 200 | 200 | 200 | 300 | 300 | 300 | 400 | 400 | 400 |
| Rated current（mA） | 2 | 3 | 5 | 2 | 3 | 5 | 2 | 3 | 5 |
| rated power（W） | 400 | 600 | 1000 | 600 | 900 | 1500 | 800 | 1200 | 2000 |
| Control box quality（kg） | 5.5 | 6.0 | 6.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.8 |
| Pressure cylinder quality（kg） | 8.7 | 9 | 9 | 24 | 24 | 24.5 | 33.5 | 33.5 | 33.5 |
| Double cylinder height（mm） | 970 | 970 | 970 | 1250 | 1250 | 1250 | 1650 | 1650 | 1650 |
| Spannungsgenauigkeit | ±(1,0 % Messwert + 2 Wörter) | ||||||||
| Aktuelle Genauigkeit | ±(1,0 % Messwert + 2 Wörter) | ||||||||
| Welligkeitskoeffizient | ≤0.5% | ||||||||
| Spannungsstabilität | Wenn sich die Versorgungsspannung um ±10 %≤1 % ändert | ||||||||
| Überlastfähigkeit | Die Leerlaufspannung kann 10 Minuten lang 10 % der Nennspannung überschreiten | ||||||||
| Der maximale Ladestrom beträgt das 1,25-fache des Nennstroms | |||||||||
| Stromversorgung | Einphasige Kommunikation 50 Hz 220 V ±10 % | ||||||||
| Arbeitsweise | Intermittierende Nutzung: Nennlast 30 Minuten | ||||||||
| 1,1-fache Nennspannung. Verbrauch: 10 Minuten | |||||||||
| Arbeitsweise | temperature：-10℃～+40℃ | ||||||||
| Relative humidity: no more than 85% at room temperature of 25 °C (no condensation) | |||||||||
| Höhe: unter 1500 Meter | |||||||||
| Mit kapazitiver Belastbarkeit | Das getestete Produkt verfügt über unbegrenzte Kapazität | ||||||||
| Geladen mit dem 1,5-fachen Nennstrom | |||||||||
| Strukturelle Eigenschaften | Electrical insulation doubler | ||||||||
| Luftisolierung, keine Leckage | |||||||||
| Funktionen der Bedienbox | Hochpräzise One-Touch-Taste mit 0,75 UDC und 1 mA (Genauigkeit ≤ 1,0 %), geeignet für die Prüfung von Zinkoxid-Blitzableitern | ||||||||
| Überspannungsschutz durch digitalen Drehschalter auf einen Blick | |||||||||
| Tragbares Chassis, bequemer vor Ort | |||||||||
Geltungsbereich
1. Conductivity current test of valve type lightning arrester.
2. DC withstand voltage test and leakage current measurement of power transformers.
3. DC-Spannungsprüfung und Leckstrommessung von Hochspannungskabeln (35–500 kV und darunter).
4. U1mA DC reference voltage test and 0.75U1mA leakage current test for zinc oxide lightning arrester.
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Core application scenarios
1、 Insulation performance testing of power equipment
1. Voltage withstand test of high-voltage electrical equipment
Transformer: Test the insulation strength of the winding to ground and between layers to ensure that there is no risk of breakdown during long-term operation at rated voltage.
Switchgear: Detect the insulation reliability of components such as contacts and insulators under high voltage, and prevent partial discharge or breakdown accidents.
Transformer: Verify the electrical performance of insulation materials in high voltage environments, ensuring measurement accuracy and equipment safety.
2. DC reference voltage test for lightning arrester. Measure the leakage current of lightning arrester under DC voltage, evaluate its nonlinear resistance characteristics, and ensure the normal overvoltage protection function.
2、 Cable and accessory testing
1. DC withstand voltage test for power cables. Detect the voltage resistance of the main insulation of the cable (such as cross-linked polyethylene) under high DC voltage, and discover manufacturing defects or aging damage.
2. Performance verification of cable accessories. Test the insulation performance of cable terminals and intermediate joints to ensure that there is no partial discharge or breakdown at the joint location under high voltage.
3、 Testing of Insulation Materials and Components
1. Inspection of high-voltage components such as insulators and bushings. Apply high DC voltage, measure leakage current, evaluate surface hydrophobicity, pollution tolerance, and internal defects of insulators.
2. Dielectric loss test of capacitors. By measuring the capacitance and dielectric loss tangent (tan δ) under high DC voltage, the degree of dielectric aging of capacitors can be determined.
4、 Special industry applications
1. Detection of electrified railway contact network. Test the voltage resistance performance of components such as contact line insulators and section insulators to ensure the safety of train power supply.
2. Testing of new energy equipment. Used for insulation performance verification of photovoltaic inverters, wind power converters and other equipment to ensure their reliability in complex power grid environments.
Frequently Asked Questions
