| Brand | Vziman |
| Model NO. | Substation Service Voltage Transformer up to 550kV |
| Rated voltage | 550kV |
| Rated capacity | 10kVA |
| Series | SSVT |
Product overview
Substation Service Voltage Transformer (SSVT) is an oil-free, single-phase design equipment with SF6 gas as the insulation medium. It can be directly connected to 10kV-550kV high-voltage systems and output voltages ranging from 120V to medium voltage levels. The output power (such as 10kVA, 133kVA, etc.) can be customized according to needs; Its core function is to provide reliable power supply for secondary loads, remote areas, and temporary scenarios in substations, without the need for traditional substation voltage reduction. It has the advantages of low cost, small footprint, easy maintenance, and flexible operation. It also avoids the risk of porcelain sleeve rupture through silicone rubber sleeves, without fire hazards, and is widely used in emergency power supply, on-site power supply, and other scenarios in various fields such as industry, agriculture, and civil use.
Main Functions
The Substation Service Voltage Transformer (SSVT) uses SF6 gas as the insulating medium and is oil-free, which can meet the power supply needs of high-to-low/medium-voltage substations and remote areas. Adopting a single-phase design, the SSVT is connected to high-voltage systems ranging from 10kV to 550kV to supply power to low or medium-voltage distribution systems. Primarily serving as a power supply device for the secondary loads of substations, it provides a highly reliable and cost-effective power supply solution for remote areas and acts as an emergency response measure for temporary power supply.
The SSVT directly draws power from high-voltage power lines and converts it into usable low/medium-voltage power, eliminating the step-by-step voltage reduction method of traditional substations. It features low cost, a small footprint, easy maintenance and flexible operation, and can be widely used in industrial, agricultural, forestry and civilian sectors.
The SSVT can output voltages ranging from 120V to medium-voltage levels. The output power is customizable according to customer requirements, such as 10kVA, 133kVA, 167kVA or other power ratings.
Product Features
Single-phase design: The high-voltage terminal can be directly connected to high-voltage overhead lines to supply power to electrical loads.
SF6 gas insulation: Boasts excellent insulation performance and ensures reliable power supply of the product.
Silicone rubber bushings: Eliminates the risk of porcelain bushing rupture.
Oil-free design: Eliminates the risk of fire.
Easy to install with low maintenance costs.
Technical Parameters
Parameter |
Unit |
10kV |
24kV |
33kV |
40.5kV |
72.5kV |
145kV |
252kV |
363kV |
420kV |
550kV |
Rated voltage |
kV |
72.5 |
24 |
33 |
40.5 |
72.5 |
145 |
252 |
363 |
420 |
550 |
Rated frequency |
Hz |
50/60 |
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Rated short-time power frequency withstand voltage (1 min) |
kV |
28 |
50 |
70 |
80 |
140 |
275 |
460 |
510 |
630 |
680 |
Rated lightning impulse withstand voltage (1.2/50 μs) |
kV |
60 |
95 |
145 |
185 |
325 |
650 |
1050 |
1175 |
1425 |
1550 |
Rated power single phase* |
kVA |
10 to 176 |
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Rated secondary voltage |
V |
120 to 33kV |
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Rated overvoltage factor |
- |
1.2 cont. 1.5 30 s |
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Application Scenarios
Temporary emergency power supply.
Electrification of remote areas.
Auxiliary service power supply for substations.
On-site lighting in substation switch stations.
Power supply during construction projects.
Power supply for secondary relay protection equipment.
Power supply for substations, as well as villages and factories in vast and sparsely populated areas.
Remote on-site power supply for small industrial loads or mining sites.
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