Transformer Test Equipment

The RD8100B transformer core grounding current tester can measure the transformer core grounding current and leakage current online (range: 0.00mA~100A).The current clamp is made of magnetic shielding material with strong anti-interference ability. The inner diameter of the clamp is 80mm×80mm. It can clamp cables or ground wires below Φ80mm or 96mm×4mm Flat steel ground wires. It is not necessary to disconnect the measured line, that is, to measure the line current.The instrument is equipped with 3.5-inch color touch LCD screen, two operation modes of touch and button, real-time display of measured current size and waveform, alarm threshold setting and alarm indication function, setting automatic shutdown function.The normal operation of the transformer core is single point grounding. If two or more points are grounded at the same time, a current loop will be formed between the core and the earth, and the maximum current can reach tens of amperes, which will cause local overheating or even burning of the core.The instrument can find the latent fault of transformer as soon as possible, and is one of the main tools to ensure the safe operation and normal maintenance of transformer. It is mainly suitable for leakage current test of iron core and clamp of transformer, reactor and other electrical equipment in substation and power plant

RDZR Series Transformer DC Resistance Tester can be used for semi-finished products, finished product factory test, installation, overhaul, after changing tap changer, handover test and preventive test of power department.
The DC Resistance Tester can check the welding quality of winding joint and whether there is inter turn short circuit in winding. Transformer Direct Current Resistance Tester can detect the contact conditions of each position of voltage tap changer and whether the actual position of tap changer is consistent with the indicated position, whether the outgoing line is broken, and whether there is broken strand in multi strand conductor parallel winding.
In order to meet the needs of fast measurement of transformer DC resistance, our company developed RDZR-40A DC Resistance Tester. The DC Resistance test instrument adopts new power supply technology, which has the characteristics of small volume, light weight, large output current, good repeatability, strong anti-interference ability, perfect protection function and so on.
The whole DC Resistance test machine is controlled by high-speed single-chip microcomputer, with high degree of automation, automatic discharge and discharge alarm function. The DC Resistance test instrument has the advantages of high precision and easy operation, and can realize the fast measurement of transformer direct resistance.

The RDZR-10A transformer DC resistance tester is a necessary test item for semi-finished product, finished product factory test, installation, overhaul, change of tap changer, handover test and preventive test of power department in transformer manufacturing.
RDZR-10A Dc resistance tachometer can check the welding quality of the winding joint and whether there is inter turn short circuit in the winding, whether the contact of each position of the voltage tap changer is good, whether the actual position of the tap changer is consistent with the indicated position, whether the outgoing line is broken, and whether there is broken strand in the parallel winding of multiple wires.
In order to meet the needs of fast measurement of transformer DC resistance, our company developed RDZR-10A DC resistance tester. The DC resistance test instrument adopts new power supply technology, which has the characteristics of small volume, light weight, large output current, good repeatability, strong anti-interference ability, perfect protection function and so on. The whole machine is controlled by high-speed single-chip microcomputer, with high degree of automation, automatic discharge and discharge alarm function. The DC resistance tester of transformer has the advantages of high precision and easy operation, and can realize the fast measurement of transformer direct resistance.

1. The transformer DC resistance tester is a crucial testing tool used for various purposes in transformer manufacturing. It serves as a necessary test item for semi-finished products, finished products in factory testing, installation, overhaul, tap changer replacement, handover tests, and preventive tests conducted by power departments.

2. This Transformer DC Resistance Tester performs several critical functions, including checking the quality of welding joints in the winding and identifying any inter-turn short circuits within the winding. It also assesses the integrity of the contact points in the voltage tap changer, verifies the alignment of the tap changer's actual position with the indicated position, inspects for broken connections in the outgoing line, and identifies any broken strands in the parallel winding of multiple wires.

The RDZR-10A transformer DC resistance tester is a necessary test item for semi-finished product, finished product factory test, installation, overhaul, change of tap changer, handover test and preventive test of power department in transformer manufacturing.
Our Transformer dc resistance test instrument can check the welding quality of the winding joint and whether there is inter turn short circuit in the winding, whether the contact of each position of the voltage tap changer is good, whether the actual position of the tap changer is consistent with the indicated position, whether the outgoing line is broken, and whether there is broken strand in the parallel winding of multiple wires. In order to meet the needs of fast measurement of transformer DC resistance, our company developed RDZR-10A DC resistance tester.
The Transformer dc resistance tester adopts new power supply technology, which has the characteristics of small volume, light weight, large output current, good repeatability, strong anti-interference ability, perfect protection function and so on. The whole dc resistance test equipment is controlled by high-speed single-chip microcomputer, with high degree of automation, automatic discharge and discharge alarm function. The instrument has the advantages of high precision and easy operation, and can realize the fast measurement of transformer direct resistance.

RDB-IIH portable transformer turn ratio tester overcomes the shortcomings of traditional ratio bridge test, which is easy to operate and intuitive. It adopts three-phase precision inverter power supply, and has fast test and high accuracy.

In the production process of semi-finished and finished power transformers, before the newly installed transformers are put into operation, it is required to test the turn ratio or voltage ratio of the running transformers, so as to check the correctness of the turn ratio of transformers, the condition of tap changer, whether the transformers are short circuited between turns, and whether the transformers can operate in parallel. The traditional bridge reading is not intuitive, so the conversion can only be carried out phase by phase.
RDB-Ⅲ transformer turn ratio tester overcomes the shortcomings of traditional ratio bridge test, which is easy to operate and intuitive. The TTR adopts three-phase precision inverter power supply, and has fast test and high accuracy

The anti-interference pilot frequency dielectric loss tester is a high-precision instrument for testing the dielectric loss tangent and capacitance of various high-voltage power equipment in power plant, substation and other field or laboratory.
The anti-interference dielectric loss tester instrument is an integrated structure with built-in dielectric loss test bridge, variable frequency voltage regulating power supply, step-up transformer and SF6 high stability standard capacitor. The test high-voltage source is generated by the inverter inside the instrument, which is used to test the tested object after boosting by the transformer. The frequency can be 45Hz, 55Hz, 55Hz, 65Hz, 47.5 or 52.5Hz. The digital notch technology avoids the interference of power frequency electric field on the test, and fundamentally solves the problem of accurate measurement under the interference of strong electric field. At the same time, Capacitance&Dissipation Factor Test Set is suitable for the situation of power supply detection by generator after all power failure.

In the production process of semi-finished and finished power transformers, before the newly installed transformers are put into operation and according to the preventive test regulations, it is required to test the turn ratio or voltage ratio of the running transformers, so as to check the correctness of the turn ratio of transformers, the condition of tap changer, whether the transformers are short circuited between turns, and whether the transformers can operate in parallel.
The traditional bridge reading is not intuitive, so the conversion can only be carried out phase by phase. RDB- II transformer ratio tester overcomes the shortcomings of traditional ratio bridge test, which is easy to operate and intuitive. TTR tester adopts three-phase precision inverter power supply, and has fast test and high accuracy.