1. Conditions of Use

Serial number

Name

Company

Requirement

One

Ambient air temperature

Maximum temperature

Temperature

+40

Minimum temperature

Temperature

Zero

Two

altitude

M

< 1000

Three

Humidity

Maximum humidity

%

Eighty-five

Four

Power Supply

Ceiling voltage

V

Four hundred and eighteen

Minimum voltage

V

Three hundred and forty-two

frequency

Hz

Fifty

Phase number

Three phase four wire

Five

Grounding mode

Direct grounding

2. Detailed technical parameters

Serial number

project

Requirement

One

Rated frequency

50Hz

Two

Phase number

Three phase four wire

Three

Rated operating voltage

380V + 10%, 50Hz

Four

Rated output voltage

Negative polarity 800 kV

1.1 times rated voltage (no load)

Five

Rated output current

10mA

Six

Rated output power

8kW

Seven

Output Voltage Shift

(Can be used alone)

One-section voltage doubling, 0-400 kV continuous adjustable

Two-section voltage doubling, 0-800 kV continuous adjustable

Eight

Voltage stability

Less than 1%

Nine

Voltage regulation

0.1%

Ten

Voltage Indicator Error

3%

Eleven

Current Indication Error

3%

Twelve

0.75 Function Button

High precision 0.75 UDC1mA single touch button (accuracy < 1.0%) is most suitable for the test of zinc oxide arrester.

Thirteen

ripple factor

Less than 3%

Fourteen

Work system

Permissible continuous working hours for rated load of 30 minutes

Fifteen

Usage requirement

It can be used in sections.

III. Equipment Completeness

1. A control box.

2. One intermediate frequency transformer.

3. Voltage doubling part: one voltage doubling accessory for upper and lower sections includes adjustable horizontal support chassis, insulating tie rod, insulating base, equalizing ring, etc.

4. One piezoelectric resistive divider is attached to the outside (one equalizing cover set).

The pressure divider accessories include: adjustable horizontal support chassis, insulating tie rod, insulating base, voltage equalizing ring, etc.

5. A set of current limiting resistors

6. Accessory box: a set of discharge rods, power cables, connecting cables, high-voltage leads, grounding wires and random tools.

1. Using computer control technology, PWM pulse width modulation, measurement, protection and display are controlled. DC high voltage voltage voltage, current, overvoltage setting, timing and protection information are displayed on LCD display.

2. Intelligent grounding malfunction protection and alarm function (grounding malfunction can not boost), voltage measurement circuit disconnection protection (voltage measurement circuit disconnection instrument can not boost), emergency stop button, improve the safety of operators in the process of operation.

3. Applying the latest PUM pulse width modulation technology and high power IGBT devices, and according to the theory of electromagnetic compatibility, using special shielding, isolation and grounding measures, the DC high voltage generator achieves high quality and can withstand rated voltage discharge without damaging the machine.

4. It has many protective functions, such as low-voltage over-current, low-voltage over-voltage, high-voltage over-current, high-voltage over-voltage, zero-position protection, non-grounding protection, etc. Fault sampling adopts a special sensor, whose action time is nanosecond, and the optical isolation element is nanosecond. The main DC circuit can be shut off completely in 10 microseconds. Push signal fast turn-off protection adopts special sensor sampling at the output end. The reaction time is nanosecond. Through nanosecond optical isolator and nanosecond analog switch, the whole process cuts off the driving signal of power amplifier circuit in 2 microseconds to ensure that the power device is not damaged in the case of output short circuit.

5. The test line and shielding line are coaxially drawn out, thus realizing the true full shielding; the ammeter is 41/2 digit display meter, which can automatically shift gears from 0-2000 to 20000 mu A, which greatly improves the resolution of leakage current.