ND605 CT Parameter Analyzer

Product Introduction

☆ Meets testing requirements for various CTs (e.g., protection class, metering class, TP class), including excitation characteristics, secondary winding resistance, secondary load, ratio and phase error, load measurement, CT coil resistance measurement, CT magnetization characteristic recording, CT transient behavior measurement (IEC60044-6), CT ratio measurement considering connected load, CT phase and polarity measurement, determination of accuracy limit parameters (ALF), instrument security factor (FS), secondary time constant (Ts), remanence factor (Kr), transient dimensioning factor (Ktd), knee point voltage/current, class, saturated and unsaturated reactance, etc. It can also be used for testing excitation characteristics, ratio, polarity, secondary winding resistance, ratio and phase error, etc., of various PT electromagnetic units.

☆ Automatically provides CT and PT parameters such as knee point voltage/current, 10% (5%) error curve, accuracy limit factor (ALF), instrument security factor (FS), secondary time constant (Ts), remanence factor (Kr), saturated and unsaturated inductance, etc.

☆ Testing complies with various transformer standards such as GB1208 (IEC60044-1), GB16847 (IEC60044-6), GB1207, etc., and automatically selects the appropriate standard for testing based on the type and class of the transformer.

☆ Based on advanced low-frequency testing principles, it can handle CT tests with knee point voltages up to 30 kV.

☆ User-friendly and aesthetically pleasing interface with a fully Chinese graphical interface.

☆ The device can store 2000 sets of test data, which will not be lost in case of power failure. After testing, data can be saved to a PC via a USB drive, analyzed with software, and a WORD report can be generated.

☆ Simple and convenient testing: one-click completion of CT resistance, excitation, ratio, and polarity tests. Except for the load test, all other CT tests use the same wiring method.

☆ Easy to carry, device weight <9 kg.

☆ Testing and result evaluation according to IEC 60044-1, IEC 60044-6, or IEEE C57.13 (ANSI standard).

☆ High accuracy class (0.02%/1 min.), enabling on-site calibration and verification of 0.1-class measuring CTs.

☆ Testing and automatic evaluation of special CTs such as TPX, TPY, TPS, and TPZ.

☆ CT testing can be performed at frequencies from 16.7 to 400 Hz.

☆ Automatic analysis for CTs with unknown parameters ("nameplate guessing" function).

☆ Recalculation of test results after testing with different loads and different primary currents (no need for additional on-site measurements).

☆ High safety—all tests use low voltage (120V), European patent EP 1 398 644 A1.

☆ Almost no limitations on ratio (50,000:1), primary current (max. 999,000A), and knee point voltage (max. 15kV).

☆ Automatic demagnetization of CT after testing.

☆ Data stored on a removable flash memory card (CF), readable via a standard memory card reader.

☆ Remote interface allows integration of the tester into an automated production process.

☆ Report customization in Microsoft Excel™.

☆ Convenient import and editing in MS Office™ standard software.

Technical Parameters