Portable Transformer CT PT Test Set TTR Tester

• After-sales Service: Lifetime Technical Support
• Warranty: 1 Year for Transformer CT PT Test Set TTR Tester
• Product Name: Portable Transformer CT PT Test Set TTR Tester
• Test Standards: IEC60044-1/2/5/6
• Power Supply: 220V 50Hz
• Usage: Transformer Tester
• Model NO.: GDVA-405
• Voltage Output: 0.1~180V (AC)
• Current Output: 0.001~5A(RMS)
• Maximum Knee Voltage: 45kv
• Current Measurement Range: 0~10A
• Secondary Current: 1A,3A,5A
• Power Output: 500va
• Transport Package: Wooden Case
• Specification: 49*36*19cm
• Trademark: GOLD
• Origin: Chongqing, China
• HS Code: 9031809090
• Production Capacity: 200PCS/Month CT PT Analyzer

Product Description

Portable Transformer CT PT Test Set TTR Tester
 

 

 

What is the difference between voltage and current testing in a CT PT Tester?
 

• Voltage Testing: This involves testing the voltage across the transformer's windings. Voltage transformers, which are part of the PT (Power Transformer) category, are designed to measure and reduce high voltage values to a smaller, manageable level. They are connected in parallel with the circuit, meaning the full line voltage appears at both ends of the winding. The primary winding of a voltage transformer has many turns and carries the voltage to be measured, while the secondary winding has a small number of turns and is connected to the instrument or meter. Voltage transformers are crucial for ensuring that the voltage levels within the transformer and the connected circuit are within safe operating limits, preventing overvoltage conditions that could damage the transformer or other components.

• Current Testing: This involves testing the current flowing through the transformer. Current transformers, which are part of the CT (Current Transformer) category, are designed to reduce high currents to a safer and easier-to-manage level. They are connected in series with the transmission line, meaning the entire line current flows through the winding. The primary winding of a current transformer has fewer turns and carries the current to be measured, while the secondary winding has a large number of turns and is connected to the current winding of the instrument. Current transformers are essential for monitoring the current flowing through the transformer, ensuring it is within the expected range and preventing overcurrent conditions that could lead to overheating or other electrical faults.

What is the purpose of a CT PT Tester?
 

The tester performs highly accurate burden-based CT and PT ratio and phase error measurements (0.02% accuracy), ensuring transformers operate within expected parameters - crucial for power system accuracy and reliability. It can conduct:

- Excitation measurements on protection class CTs for overcurrent protection
- Optional live CT testing with real-time data under load conditions (GDVA accessory)
- CT/PT secondary winding resistance and PT primary included measurements
- CT 1.6 kHz admittance test for impedance characteristics
- Simulated full load inductive PT testing on up to 2 windings
- CT/PT burden testing for maintaining accuracy
- CT/PT polarity checks for correct phase relationships
- Batch testing of metering CTs for efficiency
- Estimating CT class without nameplate

Specification of a CT PT Tester
 

GDVA-405 Portable Transformer CT PT Test Set TTR Tester
1	Test standards	IEC60044-1, IEC60044-6, GB1208, GB16847, C57.13
2	Power supply	AC220V±10%,50Hz/60Hz±10%
3	Power output	0.1~125V (AC)
4	Current output	0.001~5A(RMS)
5	Power output	300VA
6	Max. knee voltage measurement	45kv
7	Current measurement range	0~10A (automatically change range in 0.1/0.4/2/10A)
8	Current measurement error	<±0.1%+0.01%FS
9	Voltage measurement range	0~200 V (automatically change range in 1V/10V/70V/200V)
10	Voltage measurement error	< ±0.1%+0.01%FS
11	Turns ratio measurement range	1~30000; 1~2000 error<0.05%; 2000~5000 error>0.1%; 5000~35000 error<0.2%
12	Phase measurement	error:±2min,resolution:0.01min
13	Coil resistance measurement	Range: 0~8kΩ(automatically change range in 2ohm /20ohm /80ohm/800ohm/8kohm) Error< 0.2%RDG+0.02%FS Maximum resolution: 0.1mΩ
14	Temperature measurement	-50~100 Celsius degree, error<3 Celsius degree
15	CT Secondary burden	Range 0-160ohm (automatically change range in 2ohm/ 20ohm/80ohm/160ohm) Error <0.2%RDG+0.02%FS Maximum resolution 0.001ohm
16	PT Secondary burden	Range 0-80kohm (automatically change range in 800ohm / 8kohm /80kohm) Error <0.2%RDG+0.02%FS Maximum resolution: 0.1ohm
17	PT ratio measurement	Range: 1~30000, 1~5000 error<0.2% 5000~30000 error<0.5%
18	Saved data groups	>1000groups
19	Work condition	Temperature:-10ºC-50ºC, moist:≤90%
20	Size	70*50*41CM
21	Gross Weight	40kg

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