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
| 仕様 | 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 |
| 電圧精度 | ±(1.0%読み取り + 2ワード) | ||||||||
| 電流精度 | ±(1.0%読み取り + 2ワード) | ||||||||
| リップル係数 | ≤0.5% | ||||||||
| 電圧安定性 | 電源電圧が±10%≦1%変動した場合 | ||||||||
| 過負荷機能 | 無負荷電圧は 10 分間定格電圧の 10% を超える可能性があります | ||||||||
| 最大充電電流は定格電流の1.25倍です | |||||||||
| 電源 | 単相通信 50Hz 220V±10% | ||||||||
| 作業の方法 | 断続使用：定格負荷30分 | ||||||||
| 定格電圧の1.1倍使用時：10分 | |||||||||
| 作業の方法 | temperature：-10℃～+40℃ | ||||||||
| Relative humidity: no more than 85% at room temperature of 25 °C (no condensation) | |||||||||
| 標高：1500メートル以下 | |||||||||
| 容量性負荷容量あり | テストされた製品の容量は無制限です | ||||||||
| 定格電流の1.5倍で充電 | |||||||||
| 構造的特徴 | Electrical insulation doubler | ||||||||
| 空気絶縁、漏れなし | |||||||||
| 操作ボックスの特長 | 高精度0.75UDC1mAワンタッチボタン（精度≤1.0%）、酸化亜鉛避雷器試験に最適 | ||||||||
| デジタルダイヤルスイッチによる過電圧保護の概要 | |||||||||
| ポータブルシャーシ、現場でさらに便利に | |||||||||
適用範囲
1. Conductivity current test of valve type lightning arrester.
2. DC withstand voltage test and leakage current measurement of power transformers.
3. 高圧ケーブル（35～500kV以下）の直流耐電圧試験、漏れ電流測定。
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
