KT210 CT/PT Analyzer
2Pages

KINGSINE ELECTRIC AUTOMATION CO., LTD A professional Manufacturer of Power Testing Products The KT210 CT/PT Analyzer is the first device with such capabilities.  Current ratio error and phase error for all measurement points defined in selected standard Winding resistance Excitation/saturation voltage current Secondary burden Remanence flux factor (Kr) Secondary time constant (Ts) Accuracy limiting factor (ALF / ALFi) Instrument security factor (FS / FSi) Dimensioning factor according to class PX, TPS (Kx) Accuracy limiting voltage/current according to class PX (Ek / Ie) Turns ratio according to class PX (N) Turns ratio and composite error (εt ,εc) Rated symmetrical short-circuit current factor (Kssc) Transient dimensioning factor (Ktd) Peak instantaneous error (ε^) Maximum emf voltage (Emax - calculated value) Accuracy limiting voltage/current (Val/Ial) The impedance / admittance of CT secondary Load, Like the burdens of various meters, relays, selector switches etc. are measured Current transformers are used for relaying and metering purposes in electrical power systems. They connect the high power primary side to the protection and metering equipment on the secondary side. Depending on the application they are used for, current transformers are designed differently. Protection current transformers As it is used to feed protective relays, the CT must be accurate during normal and fault It allows all types of single and multi-ratio current transformers to be tested on-site in conditions. Failures in transformation could lead to misoperation of the relay along with power system grids. Manufacturer of CTs, transformers or GIS use the KT210 in their production unwanted and costly outages. To test CTs according to the requirements of modern protection facilities and test / development labs. systems, it is compulsory to consider transient components and auto-reclosure systems. The KT210 offers a wide range of measurements, such as:  Metering current transformers CT-ratio and phase-angle accuracy with consideration of nominal and operational burden for various currents CTs for metering purposes must provide high accuracy up to class 0.1 to guarantee correct billing. It is therefore essential to test and calibrate the metering current transformer, as the entire metering chain is only as accurate as the instrument transformers feeding the meter. CT excitation / saturation (unsaturated and saturated) Burden impedance PT ratio, polarity and excitation curve In contrast to protection CTs, metering CTs must go into saturation directly above the nominal primary current level to protect the connected metering equipment. KT210 - a new way of testing CTs The KT210 is the most complete testing system for protection and metering CTs according Automated testing procedure The KT210 is designed to accurately measure all relevant CT parameters and compare them to the requirements of the defined IEEE or IEC standard. Due to this automated assessment, testing engineers receive the 'pass or fail' decision within seconds. Step 1: Measurement of parameters Measurement of CT parameters like Excitation curve Eddy current Ratio, etc Step 2: Modeling Definition of CT model elements with variable frequency and calculation of CT parameters through embedded mathematical functions. Step 3: Assessment according to IEEE or IEC standard Automated comparison of test results with the defined values according to the selected IEEE or IEC standard. Step 4: Reporting All data is delivered i

IK I I ■ I I^U A fHroft^ion^bL tA(WAtf(MAv*rtr of Powtr Teytisu) Prod^oty Auto Demagnetizes V Software-based tool to determine the residual magnetism in current transformers V Analysis of the remanence condition before putting into operation the CT to assure proper function V S impl ifies power gr id fa ilure analysi s after unwanted operati on of protect ive relays V Demagnetizes the CT core after measurement PC Control Available V Full access to all functions of the KT210 via a PC using the RJ45 interface V Opti mizes the i ntegrat ion i nto automated testi ng procedures in product ion...