SIEMENS POWER VOLTAGE TRANSFORMERS/ STATION SERVICE TRANSFORMER Air-insulated switchgear

Power voltage transformers (Power VTs) combine the attributes of an inductive voltage transformer with the application of a small power transformer. Therefore, they are the perfect solution wherever low voltage is needed and high voltage is available.

Power VTs only have to be connected to the high voltage overhead line to provide power at low voltage. Due to this direct connection to the transmission line, the reliability of Power VTs is very high, as they are not dependent on distribution lines that are more susceptible to outages. Trench Power VTs are designed as single-phase line to ground transformers. By using three devices a “three-phase power supply” with accumulated output power is also possible.

The Trench Power VT portfolio covers the high voltage range up to 550 kV. The maximum continuous output power in single phase operation is 167kVA. Therefore, the maximum power performance in three phase operation is up to 500kVA.

Power voltage transformers Applications:

Trench Power VTs are providing a reliable source of power and high insulation performances for many application such as:

• control power supply for an utility substation, switching station, power generating station, hibernating power stations
• construction power near a high voltage transmission line
• reliable standby power for critical loads
• remote oil / gas pumping stations
• flood control pumping stations
• desalinization stations
• hard to access locations with an overhead / underground high voltage transmission line
• micro substations for sites with limited floor space
• portable / easily relocatable low power substation for short -term or long-term power supply
• powering high voltage tower mounted line switches
• mobile phone / relay stations
• refurbishing old substations, adding redundancy to control power supply
• transmission line hazard lighting
• powering refrigeration and air-conditioning plants in remote food processing/ storage facilities
• remote railroad signaling
• a portable testing station

Siemens Transmission Products – Leader in innovations with comprehensive, connective and sustainable portfolio

Transmission products play a vital role in the energy value chain. Siemens Transmission Products provides all key elements including power transformers and distribution transformers as well as gas-insulated and air-insulated switchgear and components. Products are offered individually, bundled or with related engineering upgrade to systems. Our products offer low life cycle costs with maximum availability, highest efficiency and short commissioning times.

We are driving technology innovations not only regarding the performance of transmission products but also in the area of sustainability and eco efficiency. By merging physics and data we enable new products and applications: Sensformer® and Sensgear®. With our global factory network and leading innovations we provide the highest level of quality and reliability to our customers: TSOs, DSOs, power producers, EPCs and industrial companies.