1. The document describes a 220kV series resonant system for testing cables up to 10km in length and 2500mm2 in size. 2. It includes specifications for a high voltage reactor, frequency power supply, exciter transformer, and capacitive divider used to test 220kV cables at voltages up to 216kV. 3. The system is transported on trailers and can test cables at remote locations, with operators controlling equipment from a separate safety control room.

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220kV Series Resonant System for Cable AC Test
I. Whole Set Basic Function Requirement:
≤ 10km long 220kV (1000 mm2) XLPE cable AC Voltage Withstand Test.
≤ 10km long 220kV (2500 mm2) XLPE cable AC Voltage Withstand Test.
II. Parameter Calculation：
220kV/2500mm2 Cable 10km（Test Voltage：178kV/60min）
220kV/2500mm2 Cable 10km（Test Voltage：216kV/15min）
110kV/1000mm2 Cable 10km（Test Voltage：109kV /60min）
1. For 220kV 2500mm2 Cable Test
The reactor inductance at 30Hz：
L30 ＝ 1 1 ＝12.1H
2 -6
ωC 2.32×10 ×（2×π×30）
When at 178kV/60min ,Test Current ：I30＝77.8A
When at 216kV/15min ,Test Current：I30＝94.4A
2. For 110kV 1000mm2 Cable Test
The reactor inductance at 30Hz：
L30 ＝ 1 1 ＝11.7H
2
ωC 2.4×10 ×（2×π×30）2
-6
When at 109kV/60min ,Test Current：I30＝49.3A
The reactor use 230kV 100A tank type.
3. Power supply configuration
Fulfills the requirement 220kV cable test： P=UI=230kV*100A=23000kVAR
When system Q value ≥100, power supply Capacity selection is 230kW
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088

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III. Ambient Conditions for the AC test equipment：
Height above sea level ≤1000 m
Extreme temperatures for H.V. components: - 15℃~+45℃
Relative humidity in main hall under non condensing conditions: ≤95% (at 20℃)
Sunlight Intensity: 0.1W/cm2
No electric conduction dust
No fire and explosion
Does not contain corrosive metal and insulated gas
Power supply waveform is the sine wave, waveform deviation < 5%
Set a reliable earthing spot
Inclination of installing reactor: < 5℃
IV. Standards：
GB10229 《Reactor》
JB/T9641 《Test Transformer》
GB1094.3 《Electric Transformer》Third Part Insulation Level and Insulation Test
GB/T.311 《High Voltage Input Transformer Equipment Insulation and Matchups》
GB/T 16927.1 《High Voltage Test Technology》First Part Common Test Requirements》
GB/T 16927.2 《High Voltage Test Technology》Second Part Measurement System
GB/ 7328 《Transformer and Reactor’s Sound Level Measurement》
GB/ 4208 《Out layer Protection Level》
GB191 《Packing and Storage Mark》
GB5273 《Transformer, High Voltage Equipment and Bushing Connector End》
GB7449 《Transformer and Reactor’s Sound Level Measurement》
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088

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V. Main Technical Parameter
1. XZF -23000/230/120 High Voltage Reactor
2. HVFP-300-II Frequency Power Supply
3. ZB-300/2*5 Exciter transformer
4. TAWF-1000/230 Capacitive divider
1. High Voltage Series Reactor
Model: XZF-23000/230/120
Structure: Tank type
Rated Voltage: 230kV (120kV)
Rated Current: 100A (50A)
Nominal Capacity: 23000 kVAR
Insulated Level: 1.1U0 kV /1min
Working Frequency Range: 30-300Hz
Quality Factor: >100 (below 30Hz)
Winding Temperature Rise: ≤65℃.
Oil temperature rise: ≤55℃
Inductance: 12H ± 2％
Inductance None Linear value ≤1％
Running Time: Running for 1 hour at rated output current
Reactor has to withstand the weight of special lifting devices and transportation fixed facilities. Reactor have considered
the internal structure of the normal rail and road transport remain unchanged after the mutual position, fasteners are not
loose. Reactor equipped with rain cover.
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088

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2. Frequency Power Supply
Model: VFP-2
Rated Voltage: 100KV
Input Voltage: three phrases, 380V±20%
Rated Output Power: 300 kW
Rated Output Voltage: 350 V
Rated Output Current: 714 A
Output Voltage Instability: ≤1％
Output Voltage Distortion: < 3%
Cooling Approach: Forced air cooling
Frequency Resolution: 0.1Hz
Frequency Stability: 0.01Hz
Frequency adjustable range: 30-300Hz
Frequency adjusts in a setting range, voltage output unchanged.
Noise Level: ≤ 65dB (When Forced air cooling)
PD Level: < 100 pC
Insulation level: AC 3kV，1min
Temperature Rise: output power 25kW 1h, Bridge arm temperature < 40K, electronic circuit temperature < 40K, the main circuit
hottest < 50K;
Running time: 2 h at rated output current , two consecutive time intervals 30min.
Parameter measurement and display: test sample voltage, output current, output voltage, output frequency, power ratio
Disconnect electrical power supply frequency has obvious point, variable frequency power supply have the closing gate and
sub-state instructions: closing with red, sub-gate with green;
Variable frequency power supply have test with test voltage of RMS and peak voltage measurement display, precision is not
less than one level;
Displayed value with the various types of switch button in the testing process can be arbitrarily switch the display;
Control functions
Variable frequency power supply have the automatic tuning, automatic boost, automatic test, test time can be set at
arbitrary, over voltage protection, test results are automatically calculated ;
It has the timing function for test, an accuracy of ± 1 seconds. When time is over, automatically output voltage back to
zero;
Strong anti-interference ability, with series resonant reactor as a complete sets of the 100kV and above , 30kV / m
electric field frequency, the measurement precision and control and protection to meet the requirements;
With a micro-printer, can print test parameters after test;
Frequency regulation: the rise and fall. Frequency regulation can general-tuning and fine-tuning, manual adjustment is
convenient; and have auto-tuning function;
Test voltage regulation: the rise and fall. Voltage regulator can general-tuning and fine-tuning, manual adjustment is
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088

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convenient, can control the speed of regulating to ensure uniform and stable voltage fluctuation, with over-voltage output
protection, such as when more than setting voltage can automatic trip;
Protection
Frequency power supply over-current protection, IGBT fast over-current protection, when occur that automatically cut off
power supply output, and it with the corresponding instructions;
Over-voltage protection measures to avoid test equipment or test sample set in the event of over voltage damage,
the protection of the accuracy of two level;
Discharge protection function, do sets of series resonant test, load test product breakdown, the automatic cut off
the power output, frequency power supply without damage, and with a instruction ;
Variable frequency power supply have shortage with input phase, overvoltage, undervoltage protection;
Oscilloscope with the power socket, partial discharge instrument dedicated synchronous power: 100V, 100W.
Power with input power cord: 3-phase , 4 pieces in which 25 m for 2, 50m for 2. At the same time with a retractable reel.
Low voltage cable cross-sectional area as 30 mm2. Excitation transformer output lead 3 m for 2 pieces, low voltage cable
cross-sectional area is 30 mm2.
3. Exciter Transformer
Model: ZB-300/3*5
Structure: Tank Type, Single-phase oil-immersed transformers for the self-cooling.
Low-voltage side of a double winding, HV side of the same volume as two
separate windings may be in series and parallel use.
Low Voltage Winding Rated Capacitance: 300 kVA
Low Voltage Winding Rated Voltage: 2*350V
Maximum Input Voltage: 857A
High Voltage Winding Rated Capacitance: 2*150 kVA
High Voltage Winding Rated Voltage: 2*5 kV
Frequency: 30-300Hz
Insulation level: Low voltage winding set to ground 3kV/1min
High voltage winding set to ground 35kV/1min
Cooling Approach: ONAN
Running Time: Running for 1 hour at Rated Current and the winding temperature rise less than 65k. Top oil temperature
rise is less than 55K.
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088

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Transformer oil temperature measured with a thermometer with Block and oil level indicator, and have the lifting device to
bear the total weight of the transformers, It should be provided copper bus for high voltage winding connecting.
Transformer internal structure should have no change of mutual position and no loose of fasteners after road transport.
Transformer components such as pipe, valves, and storage cabinet position, the structure and layout are not hindering
lifting, transport and transport in the fastening positioning.
4. Capacitive Divider
Model: TAWF-1000 /230
Rated Voltage: 230kV
Capacitance: C1 = 1000pF +5%
Frequency: 30 ~ 300Hz
Insulation level: Each level 253kV/1min
Structure: C1: epoxy tube shelled oilpaper insulation structure of capacitor, C2: same
selection of temperature coefficient, frequency factor with C1
Voltage Meter: Selection internal resistance of digital voltage meter, can measure effective
value, peak value, peak value /√2, mean value respectively
Measuring Error: ≤ ± 1.5% (measuring under 50Hz)
Shielding Ring: Aluminum alloy materials, ease dismounting, a convenient package of transport.
Dielectric loss: ≤ 0.5%
Two low voltage arms, variable ratio: 1000:1
Base: Have sufficient stability, to adjust the level of demolition, facilitate loading and
fitted with casters to facilitate movement
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088

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Field test mode of transport
AC Voltage Withstand Test series resonant high-voltage field test equipment composed mainly of transport trailers and flatbed
carrier, as shown:
For safety considerations, the location of distribution, placed the control room set up power supply in front of the trailer
containers, the capacitive voltage divider placed in the rear of the trailer containers. As the capacitive voltage divider is light
weight, they can easily move out and placed in the ground to test; the excitation transformer and fixed reactors were placed in
the flatbed racks front and rear, increasing the air effective distance between the vehicle cab and the reactor; and flatbed frame
area of 7000mm × 2440mm, more suitable for relatively larger reactors placed.
Excitation transformer design into a horizontal structure, not only reducing its height but also increase its effective range to the
reactor; To appropriate increase height between reactor body and the support insulator of chassis , It is helpful to reduce the
vortex between the reactor and flat plate .
Each device are taken on a fixed effective measures when transport , such as reactor chassis fixed with flatbed by bolts,,
ensure that all equipment will not dislocation in outdoor transportation. The entire package complete with rain cover, to prevent
rain, dust into the test equipment and affect testing accuracy.
When conducting HV test, a staff person move out the capacitive voltage divider from the rear of the container trailer, and
put it on the ground and installed. Then get into the power control room to operate. Variable frequency power supply of
consoles and power cabinet between the measurement unit used fiber-optic to communications. It is good insulation and
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088

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high security. The staff start the power in power control room, set the test parameters, start test; and leave the power
control room, keeping a distance from the platform more than 10m .When the test draws to a close, the power supply
cabinet will issue a beep alarm, notify the staff back to the power control room , turnoff the power to end the test, so that
you can greatly protect the safety of staff.
For further information please contact:
Power Electric Co ., Ltd
Add: No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China
Tel: :+86-514-86688088
Fax: +86-514-86688588
E-mail: sales@powerhv.com
Http:// www.powerhv.com
Add:No.9 longchuan North Road, Jiangdu,Yangzhou City, Jiangsu province,China Tel:+86-514-86688088