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Customizable Pad mounted transformer for residential subdivision

  • Customizable Pad mounted transformer for residential subdivision

Key attributes

Brand ROCKWILL
Model NO. Customizable Pad mounted transformer for residential subdivision
Rated voltage 22kV
Series ZGS
Description

The Rockwill pad-mounted transformer is a fully enclosed, ground-level power distribution solution designed for residential subdivisions, public areas, and underground network applications. Housed in a tamper-proof, , it combines robust American-style construction with advanced engineering to deliver reliable and secure step-down distribution in space-constrained urban environments.

Key Features

  • Tamper-proof enclosure :Fully sealed, lockable compartments prevent unauthorized access to live components, meeting utility security standards for public installations
  • Customizable configuration: Optional over-current protection and sectionalized switching allow the unit to be tailored to specific distribution requirements
  • Smart grid ready: Compatible with future integration of monitoring and control systems for remote operation and grid modernization
  • Dead-front design : Elbow connector technology enables safe live-line connections and hot-stick maintenance without exposed energized parts
  • Liquid-filled cooling : Oil-immersed design with ONAN cooling ensures efficient heat dissipation and quiet operation in residential environments

Technical Parameters

Parameter Value
Rated power Up to 2500 kVA
Rated voltage (HV) 22 kV (25 kV class per ANSI C57.12.34)
Rated voltage (LV) 480Y / 277 V or 208Y / 120 V, or as specified
Insulation level 25 kV class / BIL 125 kV / LFWV 40 kV
Frequency 60 Hz
Vector group Dyn1, Dyn11, or as specified
Tapping range ±2 × 2.5 % (off-circuit)
Cooling method ONAN
Winding material Copper / Aluminum (optional)
Enclosure NEMA 3R, tamper-resistant, lockable
Standards ANSI C57.12.34, IEEE C57.12.00
 

Full load loss, no-load loss, and impedance voltage values are provided on request per project-specific ratings.

Applications

  • Step-down distribution in 22 kV (25 kV class) underground residential distribution (URD) networks
  • Power supply for residential subdivisions, commercial districts, and public facility complexes
  • Urban load centers requiring compact, low-noise, tamper-proof installation at ground level
  • Networks requiring flexible configuration with optional sectionalizing and over-current protection
 

Custom ratings, voltages, impedance, tapping arrangements, and accessory options (SCADA-ready, metering, surge arresters) available on request. Contact Rockwill for application-specific design and quotation.

Structure View

Customizable Pad mounted transformer for residential subdivision

HV:1.Manometer; 2.Oil level guage; 3.Air valve; 4.Oilling plug; 5.Plug-in fuse; 6.Thermometer; 7.Load switch operation indicator plate 8.Load switch; 9.HV cable contactor; 10.Hanging; 11.Tap changer; 12.Earthing & earthing label; 13.ual-purpose valve; 14.HV cable bracket.
LV: 15.Measuring equipment; 16.LV branch; 17.Measurement lead sealing; 18.Transformer oil tank

Documentation Resource Library Pad Mounted Transformer

Public.
Rockwill Electric Group Profile Rockwill Electric Group Profile
Brochure
English

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Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 108000m² Total staff: 700+ Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: Medium and High Voltage Switchgear/Power and Distribution Transformers/Instrument Transformers and Sensors/Lightning Protection and Electrical Insulation/Substations and E-Houses/Electrical Panel and Controlgear
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