HAOMAI ELECTRIC TEST EQUIPMENT CO.,LTD
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Automatic Instrument Transformer Test Set
Model: CTP-120PA
Automatic Instrument Transformer Test Set CTP-120PA is a portable and multifunctional test kit for testing both current transformers and voltage transformers in their equipment configuration, such as being mounted in transformers, oil circuit breakers or switchgear. It is necessary for the equipment to be completely isolated from the electrical system.
With a one-click button, the CTP-120PA performs a CT saturation test and calculates the rated knee point in compliance with either IEEE C57.13.1, IEC 60044-1, IEC 60044-6 or IEC 61869 on both standards as well as of specialized CTs such as PX, TPS, TPX, TPY and TPZ. The saturation test can test knee point up to 40 kV. This allows testing even the larger generation class CT with a portable instrument.
Many substations CTs include a multi-ratio secondary, therefore the CTP-120PA has the ability to plot and simultaneously display up to 6 CT saturation curves.
As part of a regular maintenance program to verify factory readings and locate the presence of defects in voltage transformers, the CTP-120PA can accurately measure the ratio, polarity, excitation characteristic and secondary winding resistance.
Main Features
●Able to test Protection CTs, Measuring CTs, TP class CTs and inductive VTs
●Test excitation characteristic and error curve based on low-frequency measurement principle
●Measure ratio, polarity, ratio error and phase displacement error based on voltage method
●Capable of testing multi-ratio CTs automatically without the need for rewiring
●Adopt patented multifunctional rotary mouse to replace the keypad
●Adopt 5.7-inch LCD screen for display
●Adopt DSP, ARM and embedded LINUX operation system
●Both local test and PC remote test available
●Higher measurement accuracy: 0.05 %
●Maximum knee voltage measurement 40kV
●Able to perform secondary burden tests
●Automatic demagnetization of CT
●Print test results directly by built-in thermal printer
●Small and light weight (9kg / 19.84 lbs) for easy transport
Technical Data
●Test Standards: IEC61869-2, IEC60044-1,60044-6, IEC61869-3, IEC60044-2, IEEE/ANSI C57.13
●Maximum Knee Voltage Measurement: 40kV
●Output Range:
voltage: 0~180V(RMS)
current: 0~12A(RMS), 36A(peak value)
●Voltage Measurement Accuracy: ±0.05%
●CT Ratio Measurement:
range:1~30000
accuracy: ±0.05%
●PT Ratio Measurement:
range:1~10000
accuracy: ±0.05%
●Phase Measurement:
accuracy: ±2min
resolution: 0.01min
●Secondary Winding Resistance Measurement:
range: 0~300Ω
accuracy: 0.1%±1mΩ
●Burden Measurement:
range: 0~300VA
accuracy: 0.1%±0.1VA
●Memory Capacity: >3000 groups test results
●Power Supply
| Nominal input voltage | customized (AC220V/230V/120V±10%, 1-phase) |
| Nominal frequency | 50/60 Hz |
| Rated current | 10A at 230V / 12A at 120V |
| Connection | standard AC socket (IEC 60320) |
●Environmental Conditions
| Operation temperature | 0 ... +50 °C (+32 ... +122 °F) |
| Storage temperature | -25 ... +70 °C (-13 ... +158 °F) |
| Humidity range | relative humidity 5 ... 95 %, non-condensing |
| Vibration | IEC 60068-2-6(20m/s2 at 10 ... 150 Hz) |
●Miscellaneous
| Weight | 9kg(19.84 lbs) |
| Dimensions (W x H x D, without handle) | 340×300×150mm(13.39x11.81x5.91 in) |
| Connection port | 2 USB2.0 ports, 1 communication port |
●Safety Standards, Electromagnetic Compatibility
| EMC | The product adheres to the electromagnetic compatibility (EMC) Directive 2004/108/EC(CE conform) |
| IEC 61326-1; IEC 61000-6-4; IEC 61000-3-2/3 | |
| Safety | The product adheres to the low voltage Directive 2006/95/EC(CE conform). |
| IEC 61010-1 |
During operation and routine DC winding resistance testing, it is possible for a CT to become magnetized. The Automatic Instrument Transformer Test Set CTP-120PA includes an automated CT demagnetization function, which allows determination of accurate knee point and ratio thus providing stable, repeatable test results, and reduces test time.
