40kV Ultra-Low Frequency High-Voltage Generator

Product Introduction

The MEVLF-W40kV Ultra-Low Frequency High-Voltage Generator was developed using American technology and state-of-the-art components like the ARM7 microcontroller. It features a 7-inch touchscreen and backend administration software. It overcomes many of the shortcomings of comparable goods and offers greater cost-performance when compared to imported equivalents. It is suitable for withstand voltage testing of high-capacitance equipment, such as power lines and large/medium-sized generators, and it satisfies the DL/T849.4-2004 industry standard.

Product Parameter (specification)

Output rated voltage	See table
Output frequencies	0.1Hz,0.05Hz,0.02Hz
Load capacity	0.1 Hz , ≤0.5 µF 0.05Hz , ≤1.1 µF 0.02Hz , ≤2.2 µF 0.01 Hz , ≤ 5.5 µF
Measurement accuracy	3%
Voltage positive and negative peak error	≤3 %
Voltage waveform distortion	≤5 %
Operating conditions	Indoor and outdoor; Temperature
-10 ℃ to +40 ℃; Humidity	≤85 % RH
Power fuse	See table 3
Power supply	voltage 220V±5% , 50±5Hz
Note	If using a portable generator for power, the generator output voltage and frequency must be stable (generally, the power should be greater than 3kW, the frequency 50Hz, and the voltage 220V±5% ).
The capacitance of the test sample shall not exceed the rated capacitance of the instrument, as shown in Table ;

model	Rated voltage	Load capacity	power supply Fuse	Product structure, weight
30/1.1	30kV (peak value)	0.1 Hz , ≤0.5 µF	10A	Controller: 4 kg Boost converter: 20kg
		0.05Hz , ≤1.1 µF
		0.02Hz , ≤2.2 µF
		0.01 Hz , ≤ 5.5 µF
40/1.1	40kV (peak value)	0.1 Hz , ≤0.5 µF	10A	Controller: 4 kg Boost converter: 20kg
		0.05Hz , ≤1.1 µF
		0.02Hz , ≤2.2 µF
		0.01 Hz , ≤ 5.5 µF
50/1.1	50kV (peak value)	0.1 Hz , ≤0.5 µF	15A	Controller: 4 kg Boost converter: 40kg
		0.05Hz , ≤1.1 µF
		0.02Hz , ≤2.2 µF
		0.01 Hz , ≤ 5.5 µF
60/1.1	60kV (peak value)	0.1 Hz , ≤0.5 µF	15A	Controller: 4 kg Boost converter: 50kg
		0.05Hz , ≤1.1 µF
		0.02Hz , ≤2.2 µF
		0.01 Hz , ≤ 5.5 µF
80/1.1	80kV (peak value)	0.1 Hz , ≤0.5 µF	15A	Controller: 4 kg Boost converter: 50kg
		0.05Hz , ≤1.1 µF
		0.02Hz , ≤2.2 µF
		0.01 Hz , ≤ 5.5 µF
90/1.1	90kV (peak value)	0.1 Hz , ≤0.5 µF	15A	Controller: 4 kg Boost converter: 55kg
		0.05Hz , ≤1.1 µF
		0.02Hz , ≤2.2 µF
		0.01 Hz , ≤ 5.5 µF

Product feature and application

1. Advanced Technology:

Fully automated testing procedures such as voltage boosting, voltage lowering, measurement, and protection are made possible by the use of digital frequency converter technology with microcomputer control.

2. User-Friendly Operation:

Easy wiring and reliable performance.

3. Comprehensive Protection:

Instrument safety and dependability are guaranteed by a number of safeguards (overvoltage protection, high/low-side overcurrent protection) with quick reaction times (action time ≤10ms).

4. Safe and Reliable:

Optoelectronic control and a low-voltage connection between the controller and the high-voltage generator provide safe operation.

5. Capacitive rising effects in output are removed by closed-loop negative feedback control circuitry.

6. Complete Setup:

automatic storage, automatic printing, an LCD Chinese character display, and a capacitive touchscreen.

7. Wide Test Range:

For comprehensive testing capabilities, there are several frequency possibilities (0.1Hz, 0.05Hz, 0.02Hz, and 0.021Hz).

8.Lightweight and Small Size:

Perfect for outdoor activities.

9. Switching between Chinese and English

Prodection details

Power cables, power capacitors, big and medium-sized generators, electric motors, and other electrical equipment with high equivalent capacitance can all benefit from the MEVLF-W40kV Ultra-Low Frequency High-Voltage Generator. In accordance with industry standards such as DL/T849.4-2004, it may conduct acceptance tests and preventative withstand voltage testing. It can be used both indoors and outdoors, with a temperature range of -10°C to +40°C and a relative humidity of less than 85%. It is a crucial tool for preventive insulation testing of electrical equipment and can be powered by portable generators.

Company Qualifications

FAQ

1)What are the core application scenarios for the MEVLF-40kV Ultra-Low Frequency High-Voltage Generator?

Answer: The MEVLF-40kV Ultra-Low Frequency High-Voltage Generator is primarily designed for withstand voltage testing of electrical equipment with large equivalent capacitance. Its core application scenarios include: (e.g., cross-linked polyethylene insulated power cables), synchronous motors, asynchronous motors, power capacitors, large and medium-sized generators, and electric motors. It complies with industry standards such as "General Technical Conditions for Ultra-Low Frequency High-Voltage Generators DL/T849.4-2004."

2)What advantages does the MEVLF-40kV Ultra-Low Frequency High-Voltage Generator offer over DC withstand voltage testing equipment?

Answer: Compared to DC withstand voltage testing equipment, the core advantages of the MEVLF-40kV Ultra-Low Frequency High-Voltage Generator include: First, minimal insulation damage, whereas DC withstand voltage testing causes the most damage to the insulation of test specimens. Furthermore, relevant national regulations explicitly prohibit the use of DC high voltage for withstand voltage testing. Second, superior test equivalence, enabling replacement of power frequency withstand voltage tests with equivalent detection results, whereas DC withstand voltage tests exhibit poor equivalence with power frequency tests. Third, enhanced operational safety, simpler wiring, and multiple protection functions (overvoltage, overcurrent protection) with rapid response for greater reliability.

3)What key requirements must be followed for transporting and storing the MEVLF-40kV Ultra-Low Frequency High-Voltage Generator?

Answer: Key requirements for transport and storage are as follows:
1. Transportation: Use cardboard boxes or wooden crates with foam cushioning layers. Avoid open-air transport to prevent exposure to rain, dust, and mechanical damage.
2. Storage: Store indoors at ambient temperatures between -20°C and +60°C, relative humidity ≤85%, with ventilation and no corrosive gases. Do not place directly on the floor or against walls.
3. Moisture Prevention: In humid regions or during prolonged seasonal inactivity, power on the unit for approximately 2 hours monthly to dissipate moisture.
4. Sun Exposure Prevention: When used outdoors, avoid or minimize direct exposure to sunlight.

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