High voltage Voltage Transformer (PT)
JDCF6-110, JDCF6-110W3 and JDCF6-110GYW2 are single-phase series type voltage transformers, which meet the requirements of IEC 60044-1 :2003 and IEC186 voltage
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Product Description

  • JDCF6-110, JDCF6-110W3 and JDCF6-110GYW2 are single-phase series type voltage transformers, which meet the requirements of IEC 60044-1 :2003 and IEC186 voltage transformers of International Electrotechnical Commission. They are used for voltage, energy measurement and relay protection of 110kV neutral point effective grounding system.

Main technical parameters


  • Rated voltage: 110000/√3 V
    Rated primary voltage: 100/√3 V
    Winding rated voltage: 100 V
    Residual voltage winding voltage: 100V
    Rated Frequency: 50/60 Hz
    Phase: Single Phase
    Winding connection group label: 1 / 1 / 1-12-12
    Maximum voltage of equipment: 126kV
    Accuracy level and rated output
    See Table 1 for accuracy level and rated output of secondary winding.

Accuracy Level

0.2

0.5

1

3P

Rated Output VA

10

200

500

300

  • Accuracy level: 6p
    Rated output: 300VA cos Ø = 0.8 (lagging)
    Limit output of primary winding: 2000vacos Ø = 0.8 (lagging) ~ 1.
    Error limits
    Error limit of secondary winding
    Secondary winding for measurement

Accuracy Level

Voltage Error±%

Phase Difference



±(′)

±crad

02

0.2

10

0.3

0.5

0.5

20

0.6

1.0

1.0

40

1.2


The voltage error and phase difference of the secondary winding shall not exceed the limit values listed in Table 2 under any value of rated frequency, primary voltage 80-120% rated voltage and secondary load 25-100% rated secondary load.
Secondary Winding for Protection
Under the rated frequency, rated voltage of 5-150%, the rated load is any value of 25-100%, and the power factor is 0.8 (lag), the voltage error and phase difference shall not exceed the limit listed in Table 3, and under the rated voltage of 2%, the voltage error and phase difference shall not exceed twice the limit listed in Table 3.

Accuracy Level

Voltage Error ±%

Phase Difference



±(´)

±crad

3P

3.0

120

35

6P

6.0

240

70


Error Limit of Residual Voltage Winding
When any voltage between the rated frequency and the primary voltage is 5-150% of the rated voltage, the residual voltage winding is connected with any value load between 75-300va, and the secondary winding is connected with any load between 125-500va, the residual voltage winding error shall not exceed the limit listed in Table 3. Under the 2% rated voltage, the voltage error and phase difference shall not exceed twice the limit listed in Table 3.

Temperature Rise Limit
When the secondary winding is connected with 2000VA limit load, tapping factor is any value between 0.8 (lagging) and 1, and the primary voltage is 1.2 times of the rated primary voltage for long-term operation, the temperature rise of each part of the voltage transformer shall not exceed the following provisions.

Winding 65K (resistance method)
Oil level 55k (thermometer method)
After the normal temperature rise test reaches a stable state, when the secondary winding is connected with a load of 500VA and the residual voltage winding is connected with a load of 300VA, apply 1.5 times of the rated voltage to the primary winding. For 30s, the winding temperature rise shall not exceed 75K.
Insulation Level of N-terminal of Secondary Winding and Primary Winding. At room temperature, the insulation resistance between secondary winding, residual voltage winding and to ground shall not be less than 100m Ω, primary N-terminal to secondary winding, residual winding and underground shall not be less than 500m Ω.
The power frequency withstand voltage of the N-terminal of the primary winding to the residual voltage winding of the secondary winding and the ground for 1 min is 5kV.
The power frequency withstand voltage between secondary winding, residual voltage winding and to the ground for 1min is 3KV.

Insulation Level of Primary Winding
Induction withstand voltage 200kV;
Lightning impulse full wave withstand voltage 480kV; (peak value)
Lightning impulse cut-off withstand voltage (internal insulation) 530kV (peak value)
The breakdown voltage of transformer oil shall not be lower than 45kv, TGδ under 90 ℃, 2KV shall not be greater than 0.4% water content ≤20ppm, C2H2 = 0.
Dielectric loss rate (TGδ).
Overall ≤ 2%
Support ≤ 5%

The measurement conditions are: temperature + 10 ~ 30 ℃, relative humidity no more than 60%.
Partial Discharge Level
Apparent discharge of transformer shall not exceed 5pc.

Model

H1

H

Oil Weight(kg)

Total Weight(kg)

JDC6-110

1470

1740

130

600

JDCF6-110W3





JDCF6-110GYW2

1530

2180

190

760

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