Capacitive Voltage Transformer Specification

For the voltage measurement purposes the behavior and.

Capacitive voltage transformer specification.

Additionally a cvt ccvt used as coupling capacitors for coupling high frequency power line carrier signals to the transmission line. A typical application would be to utilize the cvts for power line carrier plc high frequency signal interface units. It includes current transformers voltage transformers and combis in oil gas and clean air insulation as well as special instrument transformers e g. Capacitive voltage transformer working.

The capacitive potential divider is used in combination with the auxiliary transformer and the inductive element. Sometimes a voltage transformer may have two or more than two secondary cores. As a global leader in grid infrastructure. The trench group has a full portfolio of instrument transformers that is capable to meet any customer s needs worldwide and can be installed in any environmental condition.

Then these values are the sum of the output of all the secondary winding of a single voltage transformer. For reducing the cost the capacitive potential transformer is used in the system. Voltage transformers type ecf are used in high voltage networks within the 72 550 kv range. The cvt is cheap and their performance is not much inferior to the highly insulated transformer.

Wbsetcl tech spec rev 1 page 2 of 8 capacitor voltage transformer technical specification for capacitor voltage transformer 1. A capacitor voltage transformer cvt or ccvt is a transformer used in power systems to step down extra high voltage signals and provide a low voltage signal for metering or operating a protective relay. This section covers design manufacture assembly and testing at the manufacturer s works supply delivery at site of 420kv 220kv 132kv cvt complete with fittings and accessories. In its most basic form the device consists of three parts.

Design of capacitor voltage transformers 87 7 1 general 87 7 2 external disturbances on capacitor voltage transformers 89 7 3 mechanical stress on capacitor voltage transformers 90 7 4 seismic properties of abb s capacitor voltage transformers 92 8. They transform high voltage into standardised values for meters measuring and protection devices. One of the advantages the capacitive type has in comparison to the inductive type is the possibility to use capacitive voltage transformers as high frequency coupling units towards the primary system over headlines. Instrument transformers in the system 93 8 1 terminal designations for current transformers 93.

This is a one of the important specifications of voltage transformers. For over a century utilities around the world have relied on ge to deliver. 1000kv capacitive voltage transformers 1000kv capacitive voltage transformers.