Three-Phase Pad-Mounted Distribution Transformer
Tamper-resistant, ground-level power delivery designed for high-demand business parks and industrial facilities.
Core Components & Advantages
HV and LV Cabinet
Tamper-resistant, locked enclosure housing primary and secondary cable interfaces.
Handhole Cover
Access hatch enabling field inspection without unsealing the tank.
Natural Esters / Mineral Oil
High-performance dielectric fluids offering thermal cooling and fire protection.
Tank
Heavy-duty steel enclosure engineered for severe outdoor weather resistance.
Jacking Pads
Four reinforced base pads for safe hydraulic jacking and positioning.
LV Bushing
Heavy-duty 16-hole spade terminals for high-current low-voltage connections.
No-Load Tap Changer
External off-load switch to adjust turns ratio for line drop compensation.
Bayonet Fuse
Draw-out primary fuse offering quick overcurrent thermal protection.
HV Bushing
Dead-front bushings accommodating loop-feed or radial underground connections.
Critical Infrastructure Features (8)
Dead-Front Shielded Construction
Standardized 200A/600A dead-front bushings eliminate exposed live components for safe elbow switching.
Amorphous Core Topologies
Low-hysteresis core geometry suppresses inrush transients and minimizes core loss density.
Dual-Protection Coordination
Draw-out Bayonet fuses paired with internal current-limiting fuses clear faults up to 50 kA.
NEMA/IEEE Tamper-Proof Enclosure
Certified to IEEE C57.12.28 with penta-head locks and overlapping safety joints.
High-Ampacity LV Spade Bus
16-hole NEMA spades deliver low contact resistance and high dynamic short-circuit strength.
Class K Bio-Fluid Insulation
High-flash-point natural ester fluid (>300°C) extends thermal paper insulation life.
De-Energized Tap Changer (DETC)
Five-position off-circuit tap changer provides ±5% primary voltage adjustment in 2.5% steps.
Transient Overvoltage Insulation
High BIL rating (up to 150 kV) protects against lightning spikes and switching surges.
Additional Benefits
Underground Integration
Designed for ground-level pad placement on underground distribution grids.
Lower Operating Costs
Ultra-high efficiency (>99.25%) reduces lifetime energy losses.
Continuous Reliability
Loop-feed configurations allow line servicing without interrupting downstream power.
Eco-Friendly
Natural ester fluid options reduce environmental impact in the event of leaks.
Details
General Specifications
Rating
45 to 5000 kVA
Primary Voltage
As per customer specification
Secondary Voltage
As per customer specification
Frequency
60 Hz
Core Material
Amorphous / Silicon
Conductor
Aluminum / Copper
Insulating Oil
Natural Esters / Mineral Oil
Impedance
5.75% (±7.5%)
DOE Efficiency Standard (2016 & 2029)
>99.25%
Applied Standard
IEEE Std C57.12.00
Frequently Asked Question (FAQ)
PE Transformer
Engineered with focus on quality control, operational stability, and dependable system performance.