Voltage Transformer Specification

Doc 462 kb 4 1 2016.

Voltage transformer specification.

Depending on their design voltage transformers will be connected either. Orbetween phases see figure 1b figure 1 voltage transformer connections. Iso 1460 2629 galvanising. In its most basic form the device consists of three parts.

Sometimes a second isolated winding y 1 y 2 y 3 and third z 1 z 2 z 3 may also be available on the same. Between phase and earth see figure 1a. May be labeled as h 1 h 2 sometimes h 0 if it is internally designed to be grounded and x 1 x2 and sometimes an x 3 tap may be present. Hitachi abb power grids is a major transformer manufacturer throughout the world and offers both liquid filled and dry type transformers as well as services for complete life cycle support including replacement parts and components.

This list is not to be considered exhaustive and reference to a particular standard or. Class of accuracy for measuring voltage transformer the standard accuracy class of voltage transformer are 0 1 0 2 0 5 1 0 and 3 0. The following have different explanations in these standards. Voltage and potential transformers are used to measure voltage potential.

Find voltage and potential transformers on globalspec by specifications. 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. The voltage transformer must be suited to requirements relating to protection and. Rated primary voltage up.

Some definitions and requirements of these standards such as csa c88 m90 ieee c57 12 00 and iec 60076 are different. The secondary voltage is substantially proportional to the primary voltage and differs from it in phase by an angle that is approximately zero. Technical specification for 33 11kv power transformers apdrp scheme page 2 of 72 iec 606 application guide for power transformers. Many specifications list a number of transformer standards and make a statement in the specifications that the transformers must meet these standards.

Again the accuracy classes specification of voltage transformers is different for measuring core and protection core. Medium voltage transformers provide value and reliability with a variety of options to increase system protection and environmental responsibility. Smaller time ratings are permissible by agreement between manufacturer and user. Some transformer winding primary usually high voltage connecting wires are of many types.