Mainly used in: coal mines, iron ore, aluminum, copper, gold, silver, zinc, titanium, manganese, magnesium and other mines, road and railroad tunnels and oil fields, gas fields, oil and gas stations.
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Location：Home > Products > Transformer > Mining transformers
YK-KSG low-voltage mining lighting transformer is suitable for underground mines where there is methane gas and coal dust. It is designed to supply power for electric drill, lighting, signal and other equipment in the AC 50hz/voltage 660v power supply road. The box is made of welded steel plate, in order to adapt to the pit transportation, the transformer structure is required to be low in height. In this way, the iron column diameter can be larger, generally use cold-rolled silicon steel sheet. Capacity: 2.5KVA~50KVA
Tel
18200881787
Wechat QRcode
Applied range
Parameter
| YK-KSG low-voltage mining lighting transformer basic parameters | |||||||||
| Technical parameters | Rated capacity (KVA) | ||||||||
| 2.5 | 5 | 10 | 15 | 20 | 30 | 50 | |||
| Phase | 3 phases | ||||||||
| Frequency | 50Hz | ||||||||
| Input Voltage ( V ) | 1140 660 380 220 | ||||||||
| Output voltage ( V ) | 1140 660 380 220 127 36 24 | ||||||||
| Coupling group label | Yy0-D11 Dy11 Yy0 | ||||||||
| Impedance voltage ( % ) | 3.2 | 3.5 | 3.5 | 3.5 | 4 | 4 | 4 | ||
| No-load current ( % ) | 12 | 10 | 8 | 6 | 6 | 5.5 | 4 | ||
| No-load loss ( W ) | 102 | 120 | 155 | 210 | 235 | 310 | 420 | ||
| Load loss(120℃)W | 130 | 175 | 300 | 380 | 500 | 710 | 1005 | ||
| Insulation grade | F | ||||||||
| Cooling method | AN | ||||||||
| Total loss | 10% | 10% | 10% | 10% | 10% | 10% | 10% | ||
| No-load loss P0 | 15% | 15% | 15% | 15% | 15% | 15% | 15% | ||
| Load loss PK | 15% | 15% | 15% | 15% | 15% | 15% | 15% | ||
| No-load voltage ratio | Primary Tap | ±0.4% | ±0.4% | ±0.4% | ±0.4% | ±0.4% | ±0.4% | ±0.4% | |
| Other tap | ±0.3% | ±0.3% | ±0.3% | ±0.3% | ±0.3% | ±0.5% | ±0.5% | ||
| Short circuit resistance | Primary Tap | ±10% | ±10% | ±10% | ±10% | ±10% | ±10% | ±10% | |
| Other tap | ±10% | ±10% | ±10% | ±10% | ±10% | ±10% | ±10% | ||
| No-load current | 30% | 30% | 30% | 30% | 30% | 30% | 30% | ||
| YK-KSG low voltage mining lighting transformer insulation level | |||||||||
| Rated voltage (V) | Rated short-time industrial frequency | Rated full-wave lightning surge | |||||||
| Withstand voltage (root mean square value) KV | Withstand voltage (peak) KV | ||||||||
| 1140 | 5 | -- | |||||||
| Under 660 | 3 | — | |||||||
| YK-KSG low voltage mining lighting transformer tap voltage | |||||||||
| Tap | Tap voltage V | ||||||||
| 1140-660/380-220 | |||||||||
| 660-380/220-127 | |||||||||
| Tapping or star-delta conversion to adjust the corresponding voltage | 380/220-127 | ||||||||
| 660-380/127-36 | |||||||||
| 380/220 | |||||||||
| YK-KSG low-voltage mining lighting transformer temperature rise limit | |||||||||
| Part | Temperature of insulation system 0C | Temperature rise limit K | |||||||
| Coil | 135（F） | 100 | |||||||
| Core surface | — | Using a temperature that will not damage the insulation material | |||||||
| YK-KSG low voltage mining lighting transformer creepage distance electrical clearance | |||||||||
| Working voltage U,V | Minimum creepage distance,mm | Minimum electrical clearance,mm | |||||||
| 1200 | 15 | 50 | |||||||
Features
Product protection type: mining general type
Product safety mark: KY, KA
Dry-type transformer should be able to work normally under the following conditions:
a) Altitude:not more than 1000m.
b) Ambient temperature: -20℃～+40℃
c) Relative air humidity not exceeding 95% (at +25℃).
d) in an environment free of insulation-destroying gases or vapors
e) for use in an environment free of explosive methane coal dust.
