Ultra-Compact, Tank-Integrated Step-Up Solution for High-Density Solar Array Interconnection
Tank-immersed HV components eliminate separate switchgear compartment, reducing installation area by 40% vs. European-type; enables higher PV array density per hectare and maximizes land-use ROI at utility-scale sites.
Compact LV terminal placement minimizes DC/AC cable length from inverters; lower copper consumption and reduced line losses improve project LCOE by 2–5% versus distributed pad-mount alternatives.
Fully welded oil tank with IP68 transformer body eliminates breathing mechanism; zero moisture/oxygen ingress prevents insulation degradation and oil oxidation, ensuring 25+ year service life in high-humidity coastal and tropical environments.
Externally mounted radiator panels maximize natural airflow exposure under direct solar irradiance; optimized fin spacing prevents dust accumulation and maintains oil temperature rise <55K at +50°C ambient without forced ventilation.
Fully insulated, shielded HV elbow connectors prevent accidental contact during live-line work; tool-free fuse replacement via external access cover reduces MTTR by 60% versus compartmentalized designs.
High-permeability grain-oriented silicon steel core optimized for harmonic flux; Class H upgraded copper windings for inverter duty; EPDM rubber elbow connectors rated 35kV/200A with 20-year UV resistance; tin-plated copper LV busbars for corrosion-free high-current connections.
95% automated tank welding with helium leak detection; vacuum oil filling ensures bubble-free insulation; CNAS-accredited lab performs routine + type tests including harmonic loss measurement, partial discharge under repetitive impulse, and temperature rise at non-sinusoidal load.
Shot-blasted steel tank with 7-layer nano composite coating passes ISO 12944 C5-M 20,000-hour salt spray test; mechanical impact IK10; UV-stabilized finish validated for 25-year desert exposure without chalking or cracking.
| Standard | ANSI / IEEE, NEMA |
| Number of Phases | Three phase |
| Frequency | 50Hz / 60Hz |
| Voltage | Up to 34.5kV |
| Capacity | 75~5,000kVA |
| Type | Loop-Feed Type |
| & Radial-Feed Type | |
| Core material | Amorphous or |
| Silicon steel | |
| Winding material | Copper or Aluminum |
| Tank Material | Steel / Stainless steel |
| Insulating Oil | Mineral Oil or |
| Flame-retardant Oil |
Pre-configured LV busbar layout matching major string/central inverter brands; factory-installed surge protective devices (SPD) Type 1+2 coordinated with inverter MPPT protection; optional reverse power relay for anti-backfeed compliance.
Factory-mounted WTI/OTI with Modbus RTU output; optional dissolved gas analyzer (DGA) for early fault detection; fiber optic communication interface for daisy-chained PV array SCADA integration.
Desert package (UV-stabilized coating + enhanced radiator fin density + sand-resistant breather plug); Tropical package (anti-condensation heater + fungicide-treated gaskets + stainless steel hardware); High-altitude package (>2,000m derating compensation + reinforced bushings).
FR3/K-class fire-retardant insulating liquid option; pressure relief valve with flame arrestor; optional aerosol suppression module activated by overpressure/thermal dual trigger.
Padlockable HV access cover with tamper-evident seal; concealed LV compartment fasteners; optional GPS tracking module for remote asset monitoring in unattended sites.
Integrated lifting lugs certified for single-point crane lift; fork slots for pallet jack handling; pre-assembled MV cable elbows reducing field termination time by 70%; lightweight aluminum enclosure option for roof-mounted applications.
Bilingual nameplates and warning labels; FAT report with harmonic loss verification and PD test certificate; as-built single-line diagram; BIM-compatible 3D model for EPC layout coordination.
Tell us your project requirements—voltage level, environment, grid code, or delivery timeline—and we’ll provide a compliant, optimized solution.
EN