Type SSVT oil-filled station service voltage transformer
12Pages

Type SS\T oil-filled station service voltage transformer Auxiliary power from high voltage transmission lines Power ana proauctivity for a better world

General overview The ABB Kuhlman Station Service Voltage Transformer (SSVT) combines the characteristics of a voltage transformer with the power rating capability of a distribution transformer. This provides a fully-insulated product, up to 245 kV, with power performance up to 333 kVA The SSVT is a line-to-ground connected single-phase transformer that can be used either as an individual unit for supplying single-phase loads, or in a three-phase bank to support larger kVA three-phase loads. The high voltage winding with graded insulation is applied line-to-ground on grounded VWE systems,...

Applications Switching station application Many utilities maintain switching stations for interconnection of transmission lines. Frequently, these substations do not have low voltage control power available from equipment inside the station, rather they rely on distribution feeders from outside the substation (which may be owned by another utility company) The SSVT is mounted onto a pedestal, with the primary tied to the incoming transmission line with the output secondary contro wiring connected to the station power panel Benefits to the user: - Eliminates the need for obtaining long-term...

Applications (cont'd) Substation auxiliary power application without using power transformer tertiary In normal transmission substation installations, power transformers are typically equipped with tertiary windings in order to supply distribution transformers with 15 or 25 kV primary voltages for substation load. The distribution transformers supply control power for the substation location In substations where the power transformers do not have tertiary windings, control power must be supplied by alternate means. The SSVT can be mounted on the bus, as both a bus potential transformer with...

Product dtails 4 \ .1 The ABB Kuhlman Station Service Voltage Transformer (SSVT) incorportes an integral inner condenser bushing connected to a layer wound coil (except 100 kVA 230 kV, 900 kV BIL unit which is a disk wound design) 1 NEMA 4-hole stainless steel 3"x3" (76 mm x76 mm) pad primary termina 2 Gas cushion (dry air or dry nitrogen cushion) 3 Pressure relief valve to prevent pressure buildup 4 Shrader gas valve for cushion application / fillcap 5 Magnetic oil level gauge 6 Powder-coated polyester paint on mild steel dome 7 Glazed porcelain with major-minor shed pattern for high...

Features and benefits The SSVT features a rugged transformer design incorporating high creepage insulators and high over-voltage capability with mpedance protection to limit fault currents Features and benefits of the transformer include Incorporated inductive voltage transformer insulation and magnetic performance. - Readily accommodates high momentary and maximum continuous operation voltage relative to power transformers - Fully-rated impulse levels provide improved withstand to HV transients Low profile, compact overall size and weight relative to power transformers. - Units do not...

SS\/T power winding ratings Product rating matrix Type System kV 50 100/125 160/167 200 250 315/333 MSV BIL kVA'1' kVA'1' kVA'1' kVA'1' kVA'1' kVA'1' kVA'1' kVA'1' SSVT-250 48 kV 250 kV Power windings Measurng windings'2' ■/ Cl 0.5'5' / Cl 0.2'3' Օ/ Cl 0.2'3' / Cl 0.2'3' SSVT-350 72 kV 350 kV Power windings Measurng windings'2' Օ/ Cl 0.5'5' / Cl 0.2'3' Օ/ Cl 0.2'3' / Cl 0.2'3' Օ/ SSVT-550 123 kV 550 kV Power windings Measurng windings'2' / Cl 0.5'5' Օ/ Cl 0.2'3' / Cl 0.2'3' Օ/ Cl 0.2'3' / SSVT-650 145 kV 650 kV Power windings Measurng windings'2' Օ/ Cl 0.2'3' / Cl 0.2'3' Օ/ SSVT-650 170 kV...

Connection dtails 'ower conduit box Measuring conduit box Conduit box internai view (900 kV BIL rating and higher) Typical nameplate layout The supplied nameplates are laser-etched aluminum and contain product technical details, as well as winding schematics. A power winding nameplate is affixed near the power conduit box and, where applicable, a separate nameplate for measuring windings is provided near the measuring terminals. The example shown is for illustration purposes; actual nameplates will reflect the specification for each site application CRYSIAL SPRINGS MISSISSIPPI ABBKUHLMAN...

Dielectric ratings In gnral, the SSVT is produced according to IEEE C57.13 The unit can be configured for IEC dielectric ratings as well as relative to the dielectric ratings and for 60 hertz performance. for 50 hertz systems The information shown below reflects the IEEE specification Rating Product voltage levels SSVT-350 SSVT-550 SSVT-650 SSVT-650 SSVT-750 SSVT-900 SSVT-1050 NSV 46 kV 69 kV 115 kV 138 kV 161 kV 161 kV 230 kV 230 kV MSV 48 kV 72 kV 123 kV 145 kV 170 kV 170 kV 245 kV 245 kV BIL 250 kV 350 kV 550 kV 650 kV 650 kV 750 kV 900 kV 1050 kV MCOV (power only) 115% 115% 115% 115%...

Contact us ABB Kuhlman High Voltage Instrument Transformers 3101 Beaumont Centre Circle Suite 225 Lexington, KY 40513 Toll free: +1 800-950-6966 Phone: +1 859-219-6040 Fax: +1 859-223-2025 www.abb.com/highvoltage Note We reserve the right to make technical changes or modify the contents of this document without prior notice With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and...