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Mining Type Power Distribution Transformer

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Mining type power distribution transformers with power rating from 25 to 2500 kVA and Voltage 6-36/0,4 (0.23)kV. In 50/60 Hz power transmission and distribution system for power supply and lighting in industrial and agricultural field. Distribution transformers are produced with nominal Voltage in primary winding 6 up to 36 kV. Nominal Voltage in secondary winding is 0.4 or 0.23 kV. Scheme and connection group of windings U/Un-0 or D/Un-11, etc. On the customer demand it is possible to make transformers with different connection of the Voltage s and other construction solution. Regulating the Voltage is made as a result of moving the switch, by the transformer detached from the net both high (HV) and low (LV) Voltages.


1. Energy saved :

Compared with old type S7, no-load loss decreases 10.25% averagely and on-load current decreases 37.9%, which means 18.39% operation cost is reduced.
2. Long-term reliable service life:
Fully enclosed transformer tank and rim shall be bolted together or welded firmly. Isolation between oil and air keeps insulation away from moisture, which lowers insulation aging and improves service life.
3. Free from untanking:
Free from untanking before operation, so its cost is saved.
4. Free from maintenance
5. Low noise:
Impacted structure in design, new material and new technology adopted and low noise.
6. Small size and artistic appearance:

Owing to the corrugated plate used for radiation, oil volume is changed by adjustment and compensation through expansion and shrinkage of corrugated plate when the temperature of oil is changed. Corrugated tank is small size in good looking.

Mining type power distribution transformers with power rating from 25 to 2500 kVA and Voltage 6-36/0,4 (0.23)kV. In 50/60 Hz power transmission and distribution system for power supply and lighting in industrial and agricultural field. Distribution transformers are produced with nominal Voltage in primary winding 6 up to 36 kV. Nominal Voltage in secondary winding is 0.4 or 0.23 kV. Scheme and connection group of windings U/Un-0 or D/Un-11, etc. On the customer demand it is possible to make transformers with different connection of the Voltage s and other construction solution. Regulating the Voltage is made as a result of moving the switch, by the transformer detached from the net both high (HV) and low (LV) Voltages.

Tech data of 10KV S11, S11M series distribution transformer:
Rated Capacity(KVA)
Rated Voltage(KV)
Vector Group
Impedance(%)
No-load loss/
Load loss(KW)
No-load Current(%)
10
(HV)
11
10.5
10
6.3
6
(LV)
0.4
0.69
Yyn0, Dyn11
4
0.065/0.4
3.5
20
0.08/0.52
3.0
30
0.1/0.63(0.6)
2.3
50
0.13/0.91(0.87)
2.0
63
0.15/1.09(1.04)
1.9
80
0.18/1.31(1.25)
1.9
100
0.2/1.58(1.5)
1.8
125
0.24/1.89(1.8)
1.7
160
0.28/2.31(2.2)
1.6
200
0.34/2.73(2.6)
1.5
250
0.4/3.2(3.05)
1.4
315
0.48/3.83(3.65)
1.4
400
0.57/4.52(4.3)
1.3
500
0.68/5.41(5.15)
1.2
630
4.5
0.81/6.2
1.1
800
0.96/7.5
1.0
1000
1.15/10.3
1.0
1250
1.36/12.0
0.9
1600
1.64/14.5
0.8
2000
1.96/19.8
0.8
2500
2.31/23.0
0.7

Note: High-pressure tap range: ± 5% or ± 2 × 2.5%; Frequency: 50HZ


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