Home > Products > Voltage instrument transformers > Inside application > VTS 12P.1 and VTS 12P.2
VTS 12P.1
VTS 12P.2 Voltage instrument transformers VTS 12P are single-phase
transformers isolated with one pole. They are designed
for the use in the high voltage systems. They are designed
for measuring and protection of high ...
We measure high voltage for you
using instrument transformers for both outdoor and indoor applications, special transformers, sensors and power transformers
  |
drawing [ZIP, 40kB] in DXF format |
Instrument voltage transformers VTS 12P.1 and VTS 12P.2 are single-phase single-pole insulated transformers designed for usage in high-voltage networks from 1 kV to 17.5 kV. They are designed for the measuring and protection of distribution devices of internal construction. The devices are equipped with an HV fuse to protect the surrounding distribution system.
Values of the secondary voltages are 100/√3, 110/√3, 120/√3, 100/3, 110/3, 120/3 V. Accuracy classes of the measuring coils are 0.2, 0.5, 1, 3 and accuracy classes of the protective coils are 3P and 6P. The transformers fulfil the required accuracy class within the range of 25 % to 100 % of the rated burden.
The body of VTS 12P transformers contains an epoxy adapter with JT 6 fuse (0.3 A or 0.6 A) or VPO T32 or T50 (32 or 50mA). The fuse can be removed or inserted using a screw-able epoxy tube (see the Installation instructions). The HV contact can be floppy for installation in a distributing board (version VTS 12P.1) or fixed using an M6 screw (VTS 12P.2), see the drawing. (It is necessary to accurately specify the version in the order.) If the fixed contact is used, a cable eye is recommended according to the cross section of the used conductor.
The magnetic circuit of the voltage transformers is made of oriented transformer strips in the shape of the “C” core.
All active parts of transformer are compound-insulated with epoxy-mixture. This material performs both the electrical insulating and the mechanical functions.
The secondary terminal board is equipped with a cover and a sealing screw. There is an additional pack inside which contains jumpers and screws to earth the coil . (See“The Instructions for the mounting and operation”).
In cases where the replacement of an older transformer (different producers) is required, we provide VTS 12P devices on modified base plates that have the same installation dimensions as the replaced type.
Instrument voltage transformers VTS 12P comply with all tests according to ČSN EN 60044-2.
We can provide official calibration if so required by the customer.
| 1. unscrew the epoxy tube | 2. pull out the contact and replace the plug fuse | 3. slide on the contact and screw in the epoxy tube |
