10kVA-100kV Test Transformer Complete Set

Field & lab high‑voltage testing often brings real headaches: bulky gear hard to transport, separate AC/DC test units driving up costs, slow protection response risking operator safety and sample damage, plus unreliable readings from stray‑capacitance interference.

 This MOEORW‑WSY32 complete set solves those pain points. It pairs a dedicated control console with MEYD/TDM ultra‑light oil‑immersed test transformer for both power‑frequency AC and DC high‑voltage insulation strength tests. One unit covers two test modes, supports standalone use or cascade stacking for higher‑voltage demands, cutting your equipment investment footprint.

10kVA-100kV Test Transformer Core Spec
1. Structure: Single-frame core, oil-immersed
2. Connection Group: Ⅰ.Ⅰ
3. Low Voltage Input: 0~200V (matched with console regulator)
4. Rated High Voltage Output: 100kV
5. Rated Capacity: 10kVA
6. Working Mode: AC power frequency (MEYD/TDM with short-circuit rod); DC high voltage (TDM without short-circuit rod)
7. Cascade Support: Up to 3 units connected in series for multiplied test voltage

1. Current-limiting Resistor: 0.5~1Ω/V for 100~300mA high-side current; 1Ω/V for current above 1A
2. Protection Sphere Gap: Calibrated to 110%~120% of test voltage
3. DC Filter Capacitor: 0.01~0.1μF
4. Divider: FRC resistance-capacitance divider for accurate high voltage measurement

✅ Dual‑mode one‑machine design Avoid buying separate AC and DC test transformers. Built‑in HV silicon stack inside bushing; just add/remove short‑circuit rod to toggle between AC withstand and DC leakage‑current testing. Reduce procurement cost and storage space.

✅ Lightweight & field‑friendly layout Single‑frame core lowers magnetic leakage flux; compact octagonal oil‑immersed body is easy to carry for substation site maintenance, railway or metallurgy field inspections. No cumbersome heavy‑weight traditional transformers slowing your site work.

✅ Fail‑fast multi‑layer safety protection Console integrates over‑current cut‑off, flashover/breakdown auto power‑off, timing alarm and buzzer prompt. Combine with sphere‑gap protection and mandatory grounding chain. Equipment cuts power instantly upon sample breakdown, protecting both staff and test articles.

✅ Cascade flexible scalability Run single unit for standard‑job sites; stack up to 3 transformers in cascade when ultra‑high‑voltage output is needed. No need to purchase extra large‑rating single‑unit hardware for occasional high‑voltage tasks.

✅ Stable & trustworthy test data Coaxial winding cuts leakage flux; matched RC divider offsets field‑site capacity‑rise interference. Test results stay consistent for lab R&D, factory‑delivery inspection and power‑utility preventive tests, meeting audit‑ready requirements.

✅ Low‑hassle operation & maintenance Stepless voltage adjustment, real‑time voltage/current readout. Simple wiring layout with dedicated grounding, measuring and HV output terminals. Spare‑parts supply and remote guidance reduce on‑site troubleshooting pressure.

Product Application

1. Power industry: Power supply bureaus, power plants, substation preventive insulation withstand test
2. Metallurgy & large industrial plants: High-voltage motor, transformer, power cabinet insulation inspection
3. Railway sector: Locomotive, railway power supply equipment high voltage test
4. Scientific research laboratory: Insulation material, electrical component power frequency/DC voltage resistance test
5. Electrical manufacturing factory: Voltage transformer, high-voltage cable, bushing, insulator factory withstand delivery test
6. On-site maintenance: Portable high voltage test for outdoor electrical equipment

More About Us

Cascade Connection Principle

Up to 3 test transformers can be cascaded to obtain higher test voltage. Each single transformer has independent excitation winding to supply power for the next stage.

1. Stage I: Cabinet grounded, output rated voltage V, rated capacity 3P
2. Stage II: Cabinet insulated to ground, output voltage superposed as 2V, rated capacity 2P
3. Stage III: Cabinet insulated to ground, total output voltage 3V, rated capacity 1P

Cascade Connection Operation Steps

1. Place Stage II & III transformers on insulating supports to ensure full insulation between cabinet and ground.
2. Connect excitation winding of the previous unit to low-voltage input terminal of the next stage strictly per wiring diagram.
3. Connect X terminal (high voltage tail), F measurement terminal of each stage to its own cabinet shell.
4. Only Stage I transformer shell must be reliably connected to the earth ground wire.
5. Complete all wiring inspection before power-on; adjust regulator to zero position then start boosting.

Cascade Test Key Notes

1. Check insulation support surface for dust, moisture or damage before installation.
2. Boost voltage at slower speed than single-unit test to avoid overvoltage breakdown.
3. After test, lower voltage to zero first, cut off power supply, then fully discharge all high-voltage parts.
4. Do not exceed the total rated voltage and capacity of the cascaded unit.