Three channel magnetic assisted transformer DC resistance tester

Instrument Introduction
The measurement of DC resistance is a necessary item for semi-finished and finished product factory testing, installation, handover testing, and preventive testing by the power department in transformer manufacturing. It can effectively detect manufacturing defects such as material selection, welding, loose connection parts, missing strands, and broken wires of transformer winding coils, as well as hidden dangers after operation.
Yangzhou Topu Electric Technology Co., Ltd. launchedThree channel magnetic assisted transformer DC resistance testerIntegrating three-phase simultaneous testing, magnetic assistance function, and demagnetization function, it achieves rapid measurement of transformer DC resistance. The DC resistance tester can be powered on simultaneously in three phases, with independent current sampling and voltage sampling. It can also measure and display the three-phase resistance value and three-phase imbalance rate, shortening the testing time of transformer DC resistance and solving the problem of long testing time for DC resistance of various tap windings in power transformers.

Features
1. This instrument can select the output current value (with a maximum output current value of 20A) and is suitable for measuring the DC resistance of inductive loads such as transformers and mutual inductors.
2. For large transformers with five column iron cores and low-voltage windings connected in a triangle, the instrument can use the method of high and low voltage series excitation for testing. The instrument automatically connects the auxiliary magnetic circuit of the winding internally, which can quickly and accurately test the DC resistance of the low-voltage winding.
3. This instrument has a three-phase simultaneous measurement function to meet the requirements of completing three-phase direct resistance measurement in one connection of star connected windings, automatically calculating the three-phase imbalance rate, saving measurement time, and improving work efficiency. The phase by phase testing function can also be used to perform phase by phase testing on transformers with YN and D (Y) connection methods until the testing is completed.
4. The equipment has a complete protection circuit and sound discharge alarm, clear discharge indication, and reduces misoperation.
5. The instrument adopts a 7-inch color touch screen, with a clear and beautiful interface display, and can display test data in real time.
6. The instrument has more complete parameter settings, which can set the test winding, tap position, test phase, test sample temperature, conversion temperature, etc. of the transformer.
7Three channel magnetic assisted transformer DC resistance testerEquipped with a USB interface, it can transfer test data to a USB drive.
8. The instrument has a built-in calendar clock that can store, retrieve, and print 100 sets of test data.
9. This instrument is assembled in an industrial plastic case, which is easy to carry and improves its service life.
10. Chinese and English operating interfaces can be selected according to user requirements.

Technical Specifications
1. Output current: Three phase test: 10A+10A, 5A+5A, 1A+1A
Phase by phase testing: 20A, 10A, 5A, 1A, 200mA
2. Measurement range: Three phase test: 1m Ω~0.5 Ω (10A+10A)
2mΩ～1Ω （5A+5A）
10mΩ～5Ω （1A+1A）
Phase by phase testing: 0.5m Ω~1 Ω (20A)
1mΩ～2Ω （10A）
2mΩ～4Ω （5A）
10mΩ～20Ω （1A）
100mΩ～100Ω （200mA）
3. Accuracy: ± (0.2%+2 words)
4. Resolution: 0.1 μ Ω
5. Working power supply: AC220V ± 10%, 50Hz ± 1Hz
6. Working environment: Temperature: -10~40 ℃
Humidity: ≤ 80% RH, no condensation

Friendly reminder: When purchasing power transformer testing equipment, choose products from direct manufacturers, as product quality and after-sales service are guaranteed!

Yangzhou Top Electric Technology Co., Ltd. Main Equipment:

Complete set of equipment for frequency conversion series resonance test, DC high voltage generator, SF6 gas micro water meter, SF6 gas leak detector, SF6 gas purity tester SF6 gas comprehensive tester, SF6 density relay calibrator, test transformer (power frequency withstand voltage test device), frequency conversion anti-interference high-voltage dielectric loss tester, triple frequency generator (induction withstand voltage test device), double frequency generator set, AC/DC voltage divider (high voltage measuring instrument), high current generator (converter), transformer DC resistance tester, transformer ratio tester, transformer capacity characteristic tester, transformer no-load short circuit tester, transformer on load tap changer tester, transformer winding deformation tester, transformer characteristic comprehensive testing platform, transformer core grounding current tester, microcomputer relay protection tester, transformer characteristic comprehensive tester (transformer volt ampere characteristic tester), high-voltage switch mechanical characteristic tester (circuit breaker characteristic tester) Testing equipment) Circuit resistance tester (contact resistance tester), zinc oxide lightning arrester tester, transmission line parameter tester, capacitance and inductance tester, grounding resistance tester, insulation resistance tester (megohmmeter), insulation oil dielectric strength tester (insulation oil withstand voltage tester), insulation oil chromatograph, insulation boot (glove) withstand voltage test device, power safety tool testing equipment, battery constant current discharge tester, mining cable fault tester, vacuum oil filter, mining detection equipment, railway system detection equipment, oil analyzer, intelligent solar photovoltaic junction box tester, electric heating appliances, insulation products, etc.