Product Details:
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Material: | Metal-oxide | Type: | Gapless For Transformer Neutral Point |
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Usage: | Indoor/ Outdoor | Color: | Red/ Grey/ Customer Specified |
Nominal System Voltage: | 27.5kV | Nominal Discharge Current: | 5kA |
Bushing Shed Dimension: | Φ128 Mm | Height: | 525 Mm |
Highlight: | 27.5kV metal oxide surge arrester,Porcelain metal oxide surge arrester,5kA porcelain surge arrester |
27.5kV Railway Porcelain Gapless Surge Arrester
Product introduction:
Normally there are 2 kinds of DC SA for railway system:
1/ 750V, Ur=1.0kV, 8/20μs residual voltage at 20kA: 2.4kV;
2/ 1500V, Ur=2.0kV, 8/20μs residual voltage at 20kA: 4.8kV.
A porcelain surge arrester is a type of surge arrester that features a housing made of porcelain, a ceramic material. This type of surge arrester is also known as a ceramic surge arrester.
Porcelain surge arresters are designed to protect electrical equipment and systems from voltage surges or transients caused by lightning strikes, switching operations, or other transient events. The porcelain housing provides mechanical support and insulation to the internal components of the surge arrester.
Item | Description | Offered | Offered | Offered | |
1 | Manufacture/ Country of Origin | Xi'an Shendian/ China | |||
2 | Model | Y5WT-42/105 | Y5WT-42/110 | Y5WT-42/120 | |
3 | Applicable standard | IEC 60099-4 | IEC 60099-4 | IEC 60099-4 | |
4 | Type | Outdoor, ZnO, gapless | |||
5 | Norminal voltage of system | kV | 27.5 | 27.5 | 27.5 |
6 | Earthing system | Effectively earthed | |||
7 | Rated frequency | Hz | 50/60 | 50/60 | 50/60 |
8 | Rated voltage of SA | kV | 42 | 42 | 42 |
9 | Maximum continuous operating voltage | kV | 31.5 | 31.5 | 34 |
10 | Power frequency reference voltage | kV | 58 | 60 | 65 |
11 | - at reference current of Note: State peak value or rms. |
mA (D.C) | 1 | 1 | 1 |
12 | Nominal discharge current | kA | 5 | 5 | 5 |
13 | (a) Lightning impulse | kV | ≤105 | ≤110 | ≤120 |
(b) Steeping impulse | kV | ≤118 | ≤127 | ≤138 | |
(c) Switching impulse | kV | ≤89 | ≤94 | ≤98 | |
14 | Material employed in series non-linear resistor | ZnO etc. | ZnO etc. | ZnO etc. | |
15 | - Material | Brown Porcelain | Brown Porcelain | Brown Porcelain | |
- Minimum creepage distance | mm/kV | 25/31 | 25/31 | 25/31 | |
16 | - HV terminal | hot zip screw | hot zip screw | hot zip screw | |
- earth terminal | hot zip screw | hot zip screw | hot zip screw | ||
17 | Diameter of bushing sheds | mm | 232 | 232 | 232 |
18 | Height | mm | 995 | 995 | 995 |
Contact Person: Mr. xue feng
Tel: +86 13709223751