Power frequency high-voltage generator

NegotiableUpdate on 05/06

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The power frequency high voltage generator is a new generation portable high voltage detection instrument designed and manufactured according to the Chinese power industry standard DL/T848.1-2004 "General Technical Conditions for High Voltage Test Equipment Part 1: DC High Voltage Generator", specifically used to detect the electrical insulation strength and leakage current of power devices. The high-voltage generator adopts an integrated design scheme: the double pressure cylinder and the host are placed in the same chassis, combined with new technology and the use of new components, to achieve the advantages of small size, high power, light weight, easy operation, safety and reliability, and high power output quality. It is an ideal testing instrument in the high-voltage testing industry.

Product Details

Scope of application

1. Conductivity current test of valve type lightning arrester.
2. DC withstand voltage test and leakage current measurement of power transformers.
3. DC withstand voltage test and leakage current measurement of high-voltage cables (35-500kV and below).
4. U1mA DC reference voltage test and 0.75U1mA leakage current test for zinc oxide lightning arrester.

Product parameters

technical parameters

specification	60/2	60/3	60/5	120/2	120/3	120/5
Rated voltage (kV)	60	60	60	120	120	120
Rated current (mA)	2	3	5	2	3	5
Rated power (W)	120	180	300	240	360	600
Whole machine weight (kg)	9			10
Overall volume (mm)3）	465390190			565390190
Height of pressure doubling cylinder (mm)	440			535
Output voltage accuracy	± (1.0% reading ± 2 words)
Output current accuracy	± (1.0% reading ± 2 words)
ripple factor	≤0.5%
working method	Intermittent use, rated load for 30 minutes
overload capacity	The no-load voltage can exceed the rated voltage by 10% and be used for 10 minutes
	The maximum charging current is 1.25 times the rated current
	Power supply: AC220V ± 10% 50Hz
working environment	Temperature: -10-40 ℃
	Relative humidity: not exceeding 85% at room temperature of 25 ℃ (no condensation)
	Altitude: below 1500 meters

Selection reference

Selection Reference - Zinc Oxide Surge Arrester DC Reference Voltage and Leakage Current Test

Rated voltage of lightning arrester (kV)	10	35	66	110	220
DC reference voltage kV	28	90	135	168	314
Equipment selection kV/mA	ZGF - 60 / 2	ZGF - 120 / 2	ZGF - 200 / 2	ZGF - 200 / 2	ZGF - 400 / 3

Selection reference - choose according to the voltage level of the substation

Substation voltage level kV	10	35	66	110	220	330
Maximum test voltage kV	47	105	135	192	305	Greater than 400
Equipment selection kV/mA	ZGF - 60 / 2	ZGF - 120 / 2	ZGF - 200 / 2	ZGF - 200 / 2	ZGF - 400 / 3	ZGF - 800 / 10

Selection reference - choose based on the qualification level of repair and testing

Maintenance and testing level	Level 5	Level 4	Level 3	Level 2	Level 1
Maximum test voltage kV	28	90	168	305	Greater than 400
Equipment selection kV/mA	ZGF - 60 / 2	ZGF - 120 / 2	ZGF - 200 / 2	ZGF - 400 / 3	ZGF - 800 / 10

Selection reference - DC withstand voltage and leakage current test of paper insulated cable

Rated voltage of cable Uo/U kV	3.6 / 6	6 / 6	6 / 10	8.7 / 10	21 / 35	26 / 35
DC test voltage kV	17	30	40	47	105	130
Equipment selection kV/mA	ZGF - 60 / 2	ZGF - 60 / 2	ZGF - 60 / 2	ZGF - 60 / 2	ZGF - 120 / 3	ZGF - 200 / 5

Selection reference - Rubber insulated cable DC withstand voltage and leakage current test

Rated voltage of cable Uo/U kV	6 / 10	8.7 / 10	21 / 35	26 / 35	48 / 66	64 / 110	127 / 220
DC test voltage kV	26	37	63	78	144	192	305
Equipment selection kV/mA	ZGF - 60 / 2	ZGF - 60 / 2	ZGF - 120 / 5	ZGF - 120 / 5	ZGF - 200 / 5	ZGF - 200 / 10	ZGF - 400 / 5

Selection reference - DC withstand voltage and leakage current test for main insulation of self accommodating oil filled cable

Rated voltage of cable Uo/U kV	48 / 66	64 / 110	127 / 220	190 / 330	290 / 500
DC test voltage kV	175	275	475	585	775
Equipment selection kV/mA	ZGF - 200 / 3	ZGF - 300 / 3	ZGF - 500 / 5	ZGF - 600 / 5	ZGF - 800 / 10

Product features

1. Stable output voltage: High frequency voltage doubling circuit is adopted, and new PWM pulse width modulation technology and voltage current dual loop feedback technology are applied to improve power regulation and load regulation, resulting in high voltage stability and low ripple.
2. Comprehensive protection: It has complete protection functions, including zero protection, overvoltage protection, overcurrent protection, and breakdown protection. The protection circuit uses nanosecond level dedicated sensors, which act quickly and reliably, effectively ensuring personal and equipment safety.
3. 0.75U Function: An intelligent high-precision 0.75U function button is added. Pressing this button will automatically switch the voltage and current to the 0.75U state, which is beneficial for testing zinc oxide lightning arresters.
4. Zero to zero boost: The boost potentiometer uses an imported multi turn potentiometer for zero to zero boost, ensuring a smooth boost process and high adjustment accuracy.
5. Overvoltage setting: The overvoltage setting uses a digital dip switch, which is easy to operate and has high setting accuracy.
6. Integrated design: Adopting an integrated design scheme, the host and the pressure doubler are placed in one chassis. Imported high-frequency and high-voltage rectifier diodes are selected to make the voltage doubler compact in size, improve overall efficiency, and facilitate portability.
7. Reliable performance:Power frequency high-voltage generatorHigh performance imported components are selected as key components, and the outer surface of the pressure doubling cylinder is coated with special insulation materials, which have good electrical performance, strong moisture resistance, and no leakage.
8. Easy to operate:Power frequency high-voltage generatorThe layout of each functional button on the interface is reasonable, the instructions are clear, and it is easy to learn and use.