ZGF-300kV/2mA DC High Voltage Generator

NegotiableUpdate on 05/13

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

ZGF-300kV/2mA DC high voltage generator has smooth voltage regulation across the entire range, with good voltage regulation precision of ≤ 0.5%, stability of ≤ 1%, and voltage and current error of 1%; One word. It is mainly suitable for conducting DC withstand voltage tests or DC leakage current tests on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, circuit breakers, generators, etc. in the power departments of 220kV power departments, industrial and mining, metallurgy, steel and other enterprises.

Product Details

ZGF-300kV/2mA DC High Voltage GeneratorTechnical conditions:

Power supply: AC220V ± 10%, 50Hz ± 1%
Output voltage indication accuracy:<1 level
Output current indication accuracy:<1 level
Ripple factor: ≤ 0.5%
0.75 times output voltage indication accuracy:<1 level, with latch

Product features:

1ZGF-300kV/2mA DC High Voltage GeneratorHas low ripple coefficient, stable and reliable voltage output, no noise, and good reliability;
2. It has overvoltage, overcurrent, zero voltage starting and fault protection functions, with adjustable voltage protection values and intuitive display;
3. Voltage and current are displayed digitally, and there are readings when the power is turned on, making it easy to monitor the output status;
4. Equipped with 0.75 times voltage conversion, convenient for testing zinc oxide lightning arresters;
5. The product has a compact structure, small size, and is easy to carry.

specification	300kV/2mA
Technical Specifications
Output voltage (kV)	300
Output current (mA)	2
Output power (W)	600
Charging current (mA)	2
Control box weight (kg)	6
Weight of pressure doubling cylinder (kg)	10
Double pressure cylinder specification (mm)	F110 1040
Voltage measurement error	1% (full degree) ± 1 word
Current measurement error	1% (full degree) ± 1 word
Overvoltage setting error	Overvoltage protection adopts dip code setting, which is clear at a glance (accuracy ≤ 1.0%)
0.75 switching error	High precision 0.75UDC-1mA single touch button (accuracy ≤ 1.0%) suitable for testing zinc oxide lightning arresters
Ripple coefficient	≤0.5%
working method	Intermittent use: rated load 30 minutes 1.1 times rated voltage use: 10 minutes
working environment	Temperature: -10 ℃ to+40 ℃
	Relative humidity: not exceeding 85% at room temperature of 25 ℃ (no condensation)
	Altitude: below 1500 meters
With capacitive load	The capacitance of the test sample is unlimited
structural characteristics	Electrical insulation voltage doubling cylinder
	Air insulation, no leakage concerns

How to use:

A DC high-voltage generator is an instrument that provides a high-voltage DC source. Before using the instrument, it must be reliably grounded. The personnel using the DC high-voltage generator must be professional personnel with a "high-voltage test certificate". When using a DC high-voltage generator, users must comply with Article 168 of the "Electricity Safety Regulations" and install two obvious disconnection points before the working power supply enters the tester. When replacing the test sample and wiring, the two power disconnection points should be clearly disconnected first. At the same time, at least three staff members must be present on site to effectively ensure the safety of users.
OpenBefore turning on the power supply, make sure that the DC high-voltage generator is connected to a 220V AC power supply, carefully check if the wiring is correct, and also check if the wiring of the high-voltage discharge pole is reliable. During the voltage rise and fall process of a DC high-voltage generator, it is important to maintain a gradual increase and decrease, and smooth voltage rise is one of the main points to extend the service life of the DC high-voltage generator. Also, try to avoid using instruments beyond the range as much as possible. After each experiment, first return the potentiometer to zero position, then cut off the power and discharge the test sample. The discharge process is divided into two steps, and ZS discharge resistance rod is used to discharge the large capacitance test sample. When discharging, the discharge rod should not be immediately in contact with the test sample. The discharge rod should be gradually brought closer to the test sample until it reaches a certain distance and begins to discharge freely in the air gap with a hissing sound. When there is no sound, the discharge rod can be used to discharge, and then directly connected to the ground wire for discharge. When the DC high voltage is 200kV or above, even if the tester wears insulated shoes,And it is located outside the safe distance area, but due to the influence of the high-voltage direct current ion spatial electric field distribution, several nearby standing human bodies will have different direct current potentials. Test personnel should not shake hands with each other or touch the grounding body with their hands, otherwise there may be slight electric shock. This phenomenon is more obvious in dry areas and winter, but due to the low energy, it generally does not cause harm to the human body.
The power supply of the control box is AC 220V ± 10%, 50Hz. If the power supply is through a 1/1 isolation transformer or a spontaneous power supply is used on site, it must be manually connected to the ground at one point.