Triple Frequency Test Instrument
Product Features
Simple operation, reliable performance, can well meet the needs of transformer and互感器 induction withstand voltage test.
Technical Parameters
1. Input voltage: three-phase 380V, 50Hz;
2. Output voltage: 50—500V (max 750V), 150Hz;
100—1000V (max 1500V), 150Hz;
3. Capacity: 1-1000KVA;
4. Waveform: sine wave, distortion less than 1%;
5. Load characteristics: resistive, inductive, capacitive all applicable;
Test Procedures
Product Aliases
Triple frequency high voltage generator, triple frequency induction voltage generator, triple frequency power supply generator, triple frequency test transformer device, triple frequency induction withstand voltage generator, triple frequency test transformer, triple frequency test instrument, triple frequency induction withstand voltage tester, voltage transformer frequency multiplication AC withstand voltage tester
The triple frequency generator is designed to meet the requirements of <>, <> and <> - 1995 for triple frequency induction withstand voltage test and partial discharge test.
The induction withstand voltage test of transformers and互感器 is an important test to verify whether the product meets national standards. The longitudinal insulation induction test of interlayer, interturn, segment and interphase insulation of windings is an important item to check whether the winding meets requirements. In order to increase the winding test voltage without causing over-saturation of the transformer or互感器 core leading to excessive excitation current, the test frequency needs to be increased, generally 100Hz—400Hz.
This product is designed according to Chinese standard 《GB311.1 - 97》 to meet the requirements of the power system for high-voltage互感器 frequency multiplication induction withstand voltage test equipment. It is widely used for AC withstand voltage tests of series-excited voltage transformers at 35----220KV levels in power systems, to assess the main and auxiliary insulation strength of互感器. It can also be used for induction tests on windings of motors and small transformers; and can also be used as a 150Hz power supply for short-term operation.
Using a three-core five-column structure, the working magnetic flux density of the iron core is selected above the saturation magnetic density, so that the vector sum of the fundamental electromotive force (positive sequence vector) in the secondary winding connected in open delta is zero, while the open ends output the same-phase 150Hz third harmonic (zero sequence).
