AC High Voltage Tester

HMYDJ-600kVA/600kV AC high voltage tester

This series is composed of an insulated cylindrical high-voltage test transformer, a voltage divider, a fully automatic intelligent console, a compensation voltage regulator, an isolation step-up transformer, and a current-limiting resistor.

Lead the test product from the high-voltage output terminal block of the insulated cylindrical high-voltage test transformer, through the current transformer on the electric voltage regulator and the meter on the insulated cylindrical high-voltage test transformer, output to the ammeter, voltmeter, indicator light, and button on the console To measure, monitor and operate.

It is widely used in power system users to test the insulation performance of various high-voltage electrical equipment on site. Especially suitable for large-scale enterprises and research departments for project research and use.

1. Intelligent electric console:

● Rated capacity: 600kVA

● Low voltage current: 0～1578.9A

● Low voltage: 0～380V

● High voltage: 0～600kV

● High voltage current: 0～1A

● Instrument voltage: 0～100V

● Accuracy of voltage measuring meter: 0.5%FS ±3 digits

● Current measuring head accuracy: 0.5%FS ±3 words

● Overall accuracy: 1.5%

● Timing length: 0 ~ 999.9 S (special mode can be used for long time work)

● Power supply voltage: AC220V ±10%; 50Hz±2 Hz

● Use environment: ambient temperature 0～50 ℃ relative humidity ≤85%RH

2. Electric compensation voltage regulator: rated capacity 600kVA

Input voltage 380V / single phase

Input current 1578.9A

Output voltage 0~600V/single phase

Output current 1000A

Structure: dry

Cooling method: fan cooling

Running time: ≤10 minutes

Dimensions 1200×1300×1800

Quality 2000kg

3. Isolation step-up transformer: rated capacity 600kVA

Input voltage 0-600V / single phase

Input current 1000A

Output voltage 0~2000V/single phase

Output current 300A

Structure: dry

Cooling method: fan cooling

Running time: ≤10 minutes

Dimensions 900×1200×1500

Quality 2000kg

4. Series excitation test transformer

Rated capacity: 600kVA

Rated input current: 300A

Input voltage: 0~2000V/single phase

High voltage output voltage: AC0~300kV

Output high voltage current: 0~2A

Series output capacity: 300kVA

Series excitation output voltage: AC0~2000V

Series excitation output current: 150A

No-load loss: ≤4%

Load loss: ≤9%

Input, output, and measurement ratio accuracy: <1.5%

Insulation medium: 25 transformer oil

Cooling method: oil circulation cooling

Structure: Cylindrical insulation barrel package

Running time: ≤10 minutes

4. Test transformer

Rated capacity: 300kVA

Rated input current: 150A

Input voltage: 0~2000V/single phase

High voltage output voltage: AC0~300kV

Output high voltage current: 0~1A

No-load loss: ≤4%

Load loss: ≤9%

Input, output, and measurement ratio accuracy: <1.5%

Insulation medium: 25 transformer oil

Cooling method: oil circulation cooling

Structure: Cylindrical insulation barrel package

Running time: ≤10 minutes

5. AC voltage divider

Rated voltage: AC600kV

Measurement feedback ratio: 3000:1

High voltage measurement voltage feedback display (digital meter)

Measurement accuracy: 1.5 level

High voltage capacity: 300 pF

Dielectric loss of the measuring device body: ≤0.5%

Running time: ≤10 minutes

Cooling method: oil circulation cooling

6. Current limiting resistor

Rated voltage: AC600kV

Rated current: 1A

Running time: ≤10 minutes

● Voltage, current, time, status information and prompt information and other data are displayed on a 10-inch large-screen LCD, with clear and intuitive readings;

● simple and clear operation, can be adapted to a variety of applications;

● Touch operation, all functions can be preset in advance, which improves the safety and reliability of the product;

● Status reminder function, full Chinese guided operation;

● Alarm function, closing alarm, 5 seconds buzzer alarm prompt; abnormal voltage signal collection, buzzer alarm;

● Emergency stop function, under automatic control, this function can realize the emergency stop of boosting or depressing at any point;

● Automatic timing function. In automatic control, when the voltage automatically rises to the set value, the device automatically starts timing, and when the timing expires, the device automatically drops the voltage and automatically returns to zero;

● Manual control mode, this mode is similar to the traditional electric boost/decrease mode, the up/down is controlled by the touch key, the device automatically judges the upper/lower limit, high-voltage over-voltage, low-voltage current protection, high-voltage over-current protection;

● Using a combination of hardware and software anti-interference technology, stable performance and strong anti-interference.

(1) The insulation resistance should be measured before and after each test, and the insulation condition should be checked.

(2) This product is forbidden to be stored and used for a long time at a temperature higher than 45°C.

(3) This product must not exceed the rated parameters. Except as necessary for testing, it is never allowed to energize or de-energize at full voltage.

(4) When doing a test with a larger capacity sample, the boost must be slow to prevent excessive charging current of the sample from damaging the equipment, and a DC test must be fully discharged.

(5) This product should be placed in a ventilated, dry place without direct sunlight when it is not used for a long time.

(6) This product must not be hit or pressed heavily during transportation, and it must not be tilted or placed upside down.

(7) The oil-immersed insulated cylindrical high-voltage test transformer needs to stａnd still before it can be energized after transportation.

(8) The use of this product for high-voltage tests must be performed by professionals. In addition to being familiar with this manual, the relevant national standards and operating procedures must be strictly implemented. Refer to GB/T16972-1997 "Insulation coordination of high-voltage transmission and transformation equipment, high-voltage test technology", "Preventive test procedures for electrical equipment", etc.

(9) Set up the venue in accordance with relevant regulations and connect the equipment connections. In areas where conditions permit, there should be personnel responsible for safety on-site for guidance. Connect the ground terminal of the console to the ground grid, and connect the ground terminal of the transformer to the ground grid to ensure that the two ground terminals are reliably connected to the same ground grid.

(10) Connect the power cord, turn on the power switch, and press the "Emergency Stop" button if you need to approach the test transformer, the tested product and other equipment linked to it.

(11) After connecting. If it is not in the zero position, the system will automatically return to the zero position.

(12) Irrelevant items are not allowed to be stacked on and around the equipment panel during the test.

(13) Please check the power supply voltage before starting up.

(14) When replacing the fuse and accessories, please use the same model as this instrument.

(15) This instrument should be protected from moisture and oil.

(16) During the test, please confirm that the device under test has been powered off and disconnected from other live devices.

Ambient temperature: -10--40°C

Altitude: <1000M

Relative humidity: <85%

There should be no gas, steam, chemical dust, and other explosive and corrosive media that seriously affect the insulation.