The ZGF-120kV/2mA is a portable DC high voltage generator engineered for testing the electrical insulation strength and leakage current of power devices. It is particularly suited for DC withstand voltage and leakage current testing of cables and surge arresters.
The ZGF series represents a new generation of portable high voltage testing instruments designed and manufactured according to the latest electric power industry standards. It adopts a high-frequency multiplier circuit, applying the latest PWM pulse width modulation technology and voltage-current dual closed-loop feedback technology to improve power supply adjustment rate and load adjustment rate, ensuring high voltage stability and low ripple.
The instrument utilizes high-power IGBT devices and their driving technology, eliminating switch interference and achieving high quality and portability. Imported high-frequency high-voltage rectifier diodes make the multiplier compact and lightweight, enhancing overall efficiency. Based on EMI electromagnetic interference and EMC electromagnetic compatibility theory, the instrument incorporates shielding, isolation, and grounding measures to enhance overall safety, capable of withstanding rated voltage discharge without damage.
Comprehensive protection functions include zero position protection, over-voltage protection, over-current protection, and breakdown protection, employing nanosecond-level dedicated sensors for swift and reliable operation, effectively ensuring personal and equipment safety. Over-voltage setting uses digital DIP switches for simple operation and high setting precision. The addition of the intelligent high-precision 0.75U function button facilitates testing of zinc oxide surge arresters.
| Technical Parameter | 60/2/3/5 | 120/2/3/5 | 200/2/3/5 | 300/2/3/5 |
|---|---|---|---|---|
| Rated Voltage (kV) | 60 | 120 | 200 | 300 |
| Rated Current (mA) | 2/3/5 | 2/3/5 | 2/3/5 | 2/3/5 |
| Rated Power (W) | 120/180/300 | 240/360/600 | 400/600/1000 | 600/900/1500 |
| Control Box Weight (kg) | 4.5 | 4.5 | 4.5 | 4.5 |
| Multiplier Weight (kg) | 4.5 | 4.5 | 22 | 27 |
| Multiplier Height (mm) | 440 | 540 | 970 | 1220 |
| Voltage Accuracy | ±(1.0% reading + 1 digit) | |||
| Current Accuracy | ±(1.0% reading + 1 digit) | |||
| Ripple Factor | ≤0.2% | |||
| Voltage Stability | ≤1% when power supply voltage varies ±10% | |||
| Overload Capacity | No-load voltage can exceed rated voltage by 10% for 10 minutes. Maximum charging current is 1.25 times rated current. | |||
| Power Supply | Single-phase AC 50Hz 220V ±10% | |||
| Operating Mode | Intermittent use: rated load for 30 minutes. 1.1 times rated voltage use: 10 minutes. |
| Operating Environment | Temperature: -10°C to +40°C. Relative Humidity: ≤85% at 25°C (non-condensing). Altitude: below 1500 meters. |
| Load Capacity with Capacitance | Undefined limit on specimen capacitance. |
| Control Box Features | Can charge up to 1.5 times rated current. Fully automatic testing of zinc oxide surge arresters. Manual voltage output adjustment function included. |
We are an integrated trade and manufacturing company with our own factory.
Yes, we accept OEM/ODM/OBM and can customize the built-in software of the product according to the customer's special requirements.
In normal circumstances, products in stock can be received within 5 to 7 days via the fastest international express. Other situations may vary depending on the quantity of products ordered, whether there are special customization requirements, and the delivery time chosen.
We have professional internal and external packaging to ensure the safety and stability of the products during transportation. For fragile or other special parts, we will include an extra set to ensure that the customer can use the product immediately upon receipt.
For quality issues that are not caused by human error, we provide a one-year warranty from the time the product is delivered, and lifetime technical support. Other after-sales issues will be addressed by our professional technical staff within 24 hours. The product comes with a user manual and an operation video.
