2024年3月21日 · In our case of the following CT nameplate by SIEMENS, we have 2 values written in insulation level. These are 460kV (RMS) and the second is 1050kVp (Peak voltage). Here is the nameplate of a CT: The first value of insulation level voltage is called power frequency voltage. These voltages can rise due to the following reasons:

This specification covers the design, manufacture, assembly, testing and delivery of three phase four wire 11kV/110V and 33kV/110V oil cooled outdoor type combined CTPT units for metering purpose having one No. three phase potential transformers and 3 Nos. single phase paper impregnated oil immersed current transformers for different phases in c...

The Nut-bolt system of CTPT not to be accepted. 7.15 The metering unit shall be provided with non-detachable anodized aluminium name plate showing position of the terminals, their marking, connection diagram along with the information as specified in IS: 2705 and IS: 3156 i.e. type, voltage ratio, CT ratio, rated burden, class of accuracy, sr ...

The combined CT & PT Unit shall be complete with all accessories like primary terminal connectors, weather proof terminal box for secondary connection, lifting lugs, grounding terminals and name plate. The combined CT & PT Unit shall be oil type provided with class - A insulation.

3.13 NAME PLATE AND MARKING : a) The equipment shall have a non detachable type name plate which should be clearly visible and effectively secured against removal having markings as per requirement of IS.

The document provides technical specifications for 11kV CTPT combined metering units of 0.2 class accuracy. It specifies ratings, standards, design requirements, insulation levels, terminals, bushings, tank construction details and other technical parameters for the units.

In this we are going to see how to read or understand current transformer’s nameplate details. Lets start… CT ratio means the currant transformation ratio, here the CT contains Single primary current and dual secondary current output. The ratio 100/5 means If the CT primary carries 100 Amps then the output of the CT secondary will be 5 Amps.

j) The following details of equipment shall be provided on a name plate with at least 10 mm letters. The name plate is to be welded to the tank after galvanization.

5.1.10. NAME PLATE: The instrument transformer shall be provided with non-corrosive, legible nameplates, with the information specified in relevant standards, duly engraved/punched on it and shall be attached to the main tank , forming integral part of the instrument transformer , as per enclosed sketch No.

It describes the standards, design, construction, insulation, accuracy class, testing requirements and provides details on bushings, grounding terminals, secondary terminal box, painting and more. 1. SCOPE : three element meter. 2. STANDARD :