JDCF-110 (132) Voltage Transformer
1. Purpose
It is outdoor, single phase and oil immersed inductive voltage transformer, which is used for metering and relay protection of 110 kV or 132 kV, 50 or 60 Hz.
2. Standards
IEC standard: IEC6044-2
National standard: GB1207
GB311.1 ndition for high voltage transmission and distribution equipment>
3. Service condition
Ambient temperature: -40 ~40
Altitude: Less than 1000m
Environment pollution level: Three type
4. System Condition
System rated voltage: 110kV, 132kV
System highest voltage: 126kV, 145kV
System rated voltage: 50 or 60 Hz
System neutral earthing method: Effectively earthed.

5. Structure feature
1. It is cascade structure, which the primary wingding has two grade winding surrounded on each limbs of single phase two-limb core. The insulation consists of high voltage cable paper, phone paper and cardboard etc; Which will be immersed with transformer oil after desiccating under vacuum. It has advantages of stable and reliable performance of insulation, rich successful experience, a long life time and convenient maintenance.
2. Perfect fluidity performance of transformer oil is good foe heat dissipation, it also have recover ability for the failure of partial discharge caused by air bubble and dust.
3. It has three secondary windings, which has individual measuring and protection windings
4. Hermetically sealed stainless steel metallic bellows is installed on the top, which protect the transformer oil from moisture and extend the life time, also there is a oil level gauge on the bellows for observing the changing of oil volume.
5. There is multi function oil drain valve on the base, which make it more convenient for sampling, draining and refilling.
6. The secondary terminal board is made of epoxy casting, the seal performance is more reliable.
7. The base use DACRAL (zinc/chromate coatings) for resistance to corrosion, which gives a high degree of corrosion resistance.

6. Technical data
1. Rated voltage: 110/??3kV; 132/??3kV
2. Highest voltage for the equipment: 126/??3kv; 145/??3kV
3. Rated frequency: 50 or 60 Hz
4. Ratio transformation ratio: 110/??3-0.1/??3-0.1??3-0.1kv; 132/??3-0.11/??3-0.11/??3-0.11kv
5. Accuracy of measuring windings: 0.2, 0.5, 3P or 0.5, 3P
6. Rated voltage factor: 1.2 times continuous; 1.5 times 30s
7. Terminal limit output: 2000VA
8. Partial discharge level under 1.2 um/??3 kV: ??5Pc
9. External insulation creepage distance (mm): 2760/3150/3190
10. Mechanical strength (three direction): 2000N.