Power transformer
Up to 220 kV with on-load tap changers and ONAF/ONAN cooling. We check the FAT report against the test bay’s real capability before you sign.
InquireAll equipment
Every power-equipment type we source, screen, and verify. Filter by category or inquire on any item.
Dry-type transformer
Cast-resin or open-wound dry-type units, 0.4-35 kV, for indoor and high-fire-safety duty. Temperature class, short-circuit withstand and sound levels are checked against the type-test certificate.
InquireDistribution transformer
Oil-immersed or dry-type, 10-35 kV class, standard and custom impedances. We verify the nameplate against the actual test report and the exact model named on your PO.
InquireInstrument transformer
Current and voltage transformers for metering and protection, indoor epoxy or outdoor oil-insulated. Accuracy class and ratio errors are checked against official calibration records.
InquireHV switchgear / GIS
110-220 kV gas-insulated switchgear or AIS bays for transmission projects. Busbar rating, breaking capacity and SF6/N2 gas management are confirmed against the type-test and FAT records.
InquireMV switchgear
Air-insulated or SF6-insulated panels, 12-40.5 kV, fixed or withdrawable. We confirm the type-test certificate matches the exact model and voltage class you are buying.
InquireLV distribution panel
MNS/GCS-style fixed or withdrawable panels up to 4000 A. Busbar material, IP rating, and short-circuit withstand are verified against the type test.
InquireRing main unit (RMU)
Compact SF6 or solid-insulated RMUs for 12/24 kV distribution networks. Switching duty, cable entries, and gas type are confirmed against the datasheet and factory records.
InquireVacuum circuit breaker
MV vacuum circuit breakers, 12-40.5 kV, 25-40 kA breaking capacity. Rated short-circuit breaking and mechanical endurance are confirmed against the type-test certificate.
InquireMolded-case breaker (MCCB)
MCCBs up to 1600 A for LV distribution and motor protection. Trip curves, breaking capacity Icu/Ics, and thermal rating are verified against declared manufacturer data.
InquireMiniature breaker (MCB)
MCBs for residential and final-branch protection, 6-125 A, B/C/D curves. Breaking capacity and curve class are checked against the nameplate rating.
InquireMV power cable
XLPE-insulated power cables, 6-35 kV, copper or aluminium conductor. Conductor cross-section, insulation thickness, and test voltage are verified against the factory test certificate.
InquireLV control cable
PVC or LSZH sheathed control cables for instrumentation and control circuits. Conductor count, cross-section, and flame-retardant class are confirmed against the data sheet.
InquireCable accessories
Terminations, joints, and lugs for MV and LV cables, heat-shrink or cold-shrink. We verify the accessory matches the cable size and voltage class before dispatch.
InquireBusbar trunking system
Busbar trunking systems from 100 A to 6300 A, sandwich or air-insulated, with IP rating and short-circuit withstand matched to the riser design. Joint continuity, temperature-rise data and the tap-off box range are checked against the declaration.
InquireCable tray & ladder
Perforated tray, ladder and wire-mesh systems in hot-dip galvanised, pre-galvanised or stainless finish. Load-deflection tables, coating thickness and the earthing continuity of the whole run are verified rather than assumed from the brochure.
InquireCable trunking & conduit
Sheet-steel trunking, wiring duct and rigid or flexible conduit for control and distribution circuits. Wall thickness, ingress protection and the fire-resistance class claimed for a specific route are read back against test evidence.
InquireProtective relay
Numerical protection relays with IEC 61850 capability for feeder, transformer, and motor protection. Firmware version and the actual test protocol are checked before commissioning.
InquireSurge arrester
ZnO gapless arresters for station and distribution duty, 3-220 kV. Rated voltage, discharge-current class, and residual-voltage curve are verified against the test report.
InquirePower capacitor / PFC
LV capacitor banks, detuned reactors and automatic PFC panels for power-factor correction and harmonic mitigation. Capacitance tolerance, detuning factor and switching duty are verified against factory data.
InquireCapacitor bank
LV and MV capacitor banks for power-factor correction, fixed or automatic. Capacitance tolerance, rated voltage, and switching duty are checked against factory data.
InquireLow-voltage VFD
Low-voltage variable-frequency drives, 0.4 kW to 630 kW, for pumps, fans, compressors and conveyors. Overload rating, harmonic mitigation, EMC class and the parameter set that actually leaves the factory are verified against the manual.
InquireMedium-voltage VFD
Medium-voltage drives, 1 kV to 10 kV, on multilevel or current-source topology for large pumps, fans and mills. Cell structure, isolation transformer design, bypass arrangement and the cooling scheme are checked before the factory acceptance test.
InquireSoft starter
Solid-state soft starters, 7.5 A to 1200 A, for motor starting on pumps, fans and compressors. Ramp profiles, bypass contactor duty, in-line or inside-delta connection and start-cycle thermal capacity are verified against the duty schedule.
InquireMotor starter
Direct-on-line, star-delta and auto-transformer starters, plus motor protection relays, from 0.1 kW to 250 kW. Enclosure rating, contactor utilisation category on AC-3 duty, thermal setting range and the type-test evidence for the assembly are checked.
InquireDiesel generator set
10 kW-2 MW gensets, open or silent-canopied, prime or standby rating. We verify the alternator, governor, and the actual load-test report, not just the brochure.
InquireUPS system
Online double-conversion UPS from 10 kVA to 1 MVA with battery management. Efficiency curve, transfer time, and battery-bank spec are confirmed against factory test data.
InquireStatic transfer switch
Automatic source changeover for critical loads, 100-4000 A, closed or open transition. Break-before-make timing and switching electronics are verified in the factory.
InquireSolar inverter
String or central PV inverters, 3 kW-3 MW, with grid-code compliance for the target market. Efficiency curve, MPPT range and the actual grid-connection certificate are checked before shipment.
InquirePV module
Monocrystalline modules from 400 W to 700 W, framed or bifacial. Flash-test data read against the nameplate, electroluminescence imaging, the degradation curve and the certificates that actually cover the shipped batch are verified before the container is sealed.
InquirePV combiner box
String combiner boxes with 4 to 24 inputs, DC breakers, fuses and surge protection rated for 1000 V or 1500 V systems. Enclosure IP class, busbar current rating and the DC ratings of every device inside are checked.
InquirePV mounting structure
Ground-mount, roof-mount and carport structures in hot-dip galvanised steel or anodised aluminium. Design wind and snow loads, the structural calculation behind them and the fastener corrosion grade for a coastal site are verified against the drawing set.
InquirePrefabricated substation
Compact MV/LV transformer substations in steel enclosures, for distribution networks and EPC projects. Thermal design, IP rating, fault-withstand and factory wiring are verified as a complete unit.
InquireBESS / Energy storage
Battery energy storage systems, 100 kWh-10 MWh, containerised or cabinet-type, with PCS and EMS. Cell chemistry, cycle life claims, thermal management and the BMS protocol are verified against factory test data.
InquireWhy we source only from China — and what that gives you
The manufacturing centre of gravity for power equipment sits in China. That is not a slogan; it means one concrete thing. For the same drawing you can collect the most quotations, the most complete component supply, and the largest number of answers that look right but are not.
01
Capacity is concentrated in four blocks
At the end of 2025 China held roughly 80–96% of global production capacity across the four solar stages (polysilicon, wafer, cell, module), over 60% of wind-turbine assembly, around 90% of energy-storage cell shipments, and about 60% of transformer capacity. Across new-energy equipment as a whole, China holds more than half of world capacity in solar, wind, storage and hydrogen alike.
02
The lead-time gap is itself a cost
While transformer lead times in North America have stretched beyond two years, customised units out of Chinese works typically run three to six months; the gap is comparable on busway, switchgear and cable. On a project with a fixed commissioning date that difference can be priced.
03
Dense supply also means noise
Around 3,000 firms operate in Chinese transformer manufacturing, and more than 14,000 electrical firms cluster in Yueqing alone. The buyer's problem is no longer finding a factory — it is telling a trading office, an assembly shop and a real production line apart inside the same quotation pool.
04
That is the layer we work in
We cross-check licence scope, insured headcount and customs filing; we read a claimed test capability back against the scope line of the report; and we state in writing that shortlisted alternates carry no financial relationship with us. You pay us a flat fee, and no commission flows from any factory.
Start with one model or one parameter sheet
Send the unit you are actually buying: a model number, a nameplate photo or a parameter range is enough. Within 48 hours you get one verdict — trustworthy, doubtful or not recommended — and one core reason. If the signal warrants it, the paid tiers take the paper evidence down to the works.
Equipment sourcing FAQ
How do you tell a real factory from a trading office?
We cross-check the business-licence scope, social-insurance headcount, and customs filing. A "manufacturer" with two insured staff and no production-equipment records is almost always a trader reselling someone else's unit. We also look at whether the address is an industrial park or a serviced office.
Can you match a specific brand or model to the right manufacturer?
Yes. Send us the brand and model, or just a nameplate photo, and we reverse-engineer the key parameters: rated voltage, impedance, cooling class, protection grade. Then we shortlist Chinese manufacturers whose product line genuinely covers those parameters. This is the Spec Match tier.
Can you negotiate on my behalf?
Yes. The Procurement Execution and Remote Audit tiers include independent negotiation support, and On-Site Verification covers the physical checks; either way, we sit on your side of the table, not the factory's.
Do you take commissions from factories?
Never. We're paid only by you, on a flat fee. When we name an alternative supplier, we state in writing that we have no financial relationship with it. No referral fees, no kickbacks, no revenue share. Our only incentive is that your deal closes.