Instrument Transformer Series
Current transformers, potential transformers, and high-voltage combined metering units (MOF) from 0.5kV to 35kV. Precision metering up to Class 0.2S and reliable relay protection.
0.5 kV – 40.5 kV · CT / PT / MOFMatched Products
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Instrument Transformers · Voltage Transformers (PT/VT)
XinHuan JDZ9-35Q and JDZX9-35 indoor single-phase cast resin potential transformers designed for voltage measurement, electric energy metering,...
Instrument Transformers · Current Transformers (CT)
XinHuan post-type epoxy resin cast current transformer (LZZBJ9-35 / LZZBW-35) designed for current, electric energy metering, and relay protection...
Precision measurement and reliable protection instrument transformers engineered for utility revenue metering, switchgear cubicle mounting, and outdoor substation automation.
High-accuracy ratio and phase displacement guarantees from 1% to 120% rated primary current per IEC 61869-2.
Hydrophobic cycloaliphatic epoxy resin (HCEP) casting provides outstanding outdoor arc-tracking resistance and UV endurance.
3-phase 3-wire or 3-phase 4-wire combined 3CT + 3PT units in a single oil-immersed or dry-type outdoor enclosure (JLSZV-10/35).
Engineered to withstand primary system short-circuit currents up to 31.5 kA 3s (Ith) and 80 kA peak (Idyn) without mechanical failure.
| Type | Voltage | Accuracy | Application |
|---|---|---|---|
| Current (CT) | 0.5kV – 35kV | 0.2S, 0.5, 5P20 | Switchgear & protection |
| Voltage (PT/VT) | 0.5kV – 35kV | 0.2, 0.5, 3P | Metering & relay voltage |
| Combined MOF | 10kV, 33kV | 0.2S / 0.2 | Utility tariff metering |
| Zero Sequence CT | 10kV – 35kV | 10P10 | Earth fault detection |
Factory Facility & Verification
Direct visual proof of XinHuan's manufacturing capability in Hefei, China. Unedited photographs showing our finished distribution transformer workshop, marked finished products area, cast resin dry-type stock, and export container loading.
Real completed units staged in orderly rows, ready for final project inspection, FAT witnessing, and international dispatch.
F/H-class cast resin coils and harmonic mitigation dry-type distribution transformers in stock.
Clear production-stage segregation and routine quality verification for procurement teams prior to container packaging.
Precision silicon steel core stacking, copper coil winding assembly, and tank fabrication.
Heavy-duty vacuum autoclave drying process ensuring zero residual moisture in coil insulation.
Direct container packing and heavy-duty ocean freight loading outside our Hefei facility.
Quality & Compliance
Every transformer, compact substation, and switchgear unit is engineered under audited ISO quality management systems and type-tested according to IEC 60076 and ANSI C57 international standards.
Certified Quality Management System covering design, coil winding, vacuum drying, oil filling, and routine testing of 10kV–35kV distribution transformers.
Environmental Management System certifying low-loss eco-designed core assemblies, zero PCB insulation oil, and environmentally safe production controls.
Occupational Health and Safety Management System ensuring safety containment in high-voltage testing bays and factory assembly protocols.
Complete routine and type test records (temperature rise, impulse voltage withstand, short-circuit withstand) conducted at CNAS-accredited national research institutes.
On-site factory audit certificate by SGS / Made-in-China, verifying manufacturing premises, export capacity, assembly lines, and legal qualification.
Verified annual supply performance and delivery certificate for overseas power grid EPC and industrial infrastructure projects (Mozambique, Nigeria, Kenya, SEA).
FACTORY & TESTING WALKTHROUGHS
Factory tours, high-voltage routine test procedures, and production walkthroughs straight from our Hefei manufacturing base.
Hefei manufacturing base, automated workshops, and high-voltage testing laboratory.
100% IEC 60076 voltage ratio, winding resistance, and dielectric routine testing.
Epoxy resin vacuum casting, partial discharge testing, and temperature monitoring.
Precision copper winding, silicon steel core stacking, and vacuum drying chambers.
Automated coil winding, precision core stacking, and vacuum drying chambers.
Vacuum circuit breakers, copper busbar routing, and relay protection cabinets.
Prefabricated kiosk substation panel wiring, RMU integration, and LV distribution.
Copper foil winding, vacuum resin casting molds, and core-coil assembly.
Engineering Reference Silo
