Grounding transformer - It is a transformer used for generators such as wind power generation and micro gas turbines, where the neutral point cannot be directly grounded. - It is used to detect zero-sequence current and zero-sequence voltage in the event of a ground fault in the circuit. - Generally, grounding transformers are specified by their short-time rating. - It has a low zero-sequence impedance.

Transformer for Wind Power Generation - A transformer installed inside the tower of floating offshore wind power generation. - Seismic performance that can withstand vibrations with a frequency of 2Hz to 100Hz and an acceleration of 0.7G. - Tilt performance that allows operation without issues even when the transformer is in a tilted or rolling state. - Both primary and secondary sides adopt a close-contact insulation cap structure, further enhancing dirt resistance performance. - It is also possible to have a fixed structure that can withstand transportation in a horizontal position while still installed in the tower.

Pulse Transformer - It is a transformer that supplies high-voltage pulse power to high-power microwave tubes such as klystrons. - The internal wires are firmly encapsulated in epoxy resin, which suppresses vibrations caused by electromagnetic mechanical forces. - By mechanically fixing the primary and secondary coils, the electromagnetic mechanical stress between the coils is enhanced. - It has a large inductance and a small sag. - The rise and fall times are steep, and the back swing is small.

Transformer for Direct Inverter 〇 This is a multi-winding transformer used in inverter devices for energy-saving operation of pumps and motors. 〇 By discarding the secondary winding, it contributes to energy-saving operation with minimal voltage fluctuations, even when connected to high-capacity inverters. 〇 We also accept manufacturing of rare winding types due to impedance matching.

Transformer for UPS (Uninterruptible Power Supply) - UPS systems are often connected to computer-related equipment, and this transformer is designed considering the "harmonics" produced by these devices. - To suppress overcurrent to the UPS device, the inrush current of the transformer is limited to about 1 to 5 times, and it can be designed to accommodate your desired inrush current. - It is strong against short-circuit mechanical forces and can handle multiple operations (more than 5 times per day). - By equipping a contact prevention plate, it can reduce noise above 1 kHz by approximately 30 dB.

Transformer for DC power supply devices - It is used in devices that convert DC from solar power generation and storage systems into AC. - It has the function of suppressing the outflow of harmonic currents into the transmission and distribution system through multi-pulse operation. - It can achieve 6 to 24 pulses with a single unit, making it energy-efficient and space-saving. - The consistency of the short-circuit impedance of each winding is good. - It is equipped with a touch prevention plate, which suppresses the transfer of surge voltage to the secondary side.

Transformer for Testing Equipment Case 1 - This is a transformer manufactured by Rishou Industry for testing large current transformers and similar devices for in-house use. - Number of phases: Single-phase - Rated capacity: 100 kVA - Primary voltage: F440-R420-F400 - Secondary voltage: 20V - Primary current: 238A - Secondary current: 5000A - Rated frequency: 50/60Hz - Approximate dimensions: 850 × 560 × 1350H 670kg

Transformer for testing equipment Case 2 - It is a three-winding transformer with a primary Δ and a secondary Δ/Y connection, equipped with a 5-step voltage switching tap. - The transformation ratio error for all tap voltages of the secondary Δ/Y is kept small, within ±0.5%. - Additionally, the difference in short-circuit impedance between the primary and secondary Δ and between the primary and secondary Y is also kept small, at about 1%. - All tap voltages of the secondary Δ/Y can be used at full capacity.

Transformer for testing equipment Case 3 - The structure allows for voltage switching by changing the connection of the six secondary windings in series and parallel. - By arranging the secondary windings on the outer circumference, it enables switching of the secondary voltage. - To accommodate large currents, the secondary voltage switching terminals are made of copper busbars and are designed to be drawn out from the front of the molded coil. - The voltage switching terminal section is equipped with terminal bolts to improve the workability of voltage switching.