Dry-Type Transformer

SCBH15 Amorphous Alloy Dry-Type Transformer

The SCBH15 combines an amorphous-alloy core with cast-resin dry-type construction to deliver low no-load losses without insulating oil. It suits indoor distribution systems that remain energised for long periods, particularly where light-load operation makes core losses a significant part of energy consumption.

The series covers 200 to 2,500 kVA, with primary voltage options from 6 to 11 kV and a 0.4 kV secondary. Dyn11 connection, multiple impedance options and ±2 × 2.5% or ±5% tapping allow the electrical configuration to be matched to the network and its protection scheme.

Technical Specifications

Rated Capacity	200 – 2500 kVA
HV Voltage	6 / 6.3 / 10 / 10.5 / 11 kV
LV Voltage	0.4 kV
Vector Group	Dyn11
Tap Range	±2×2.5% / ±5%
Short-Circuit Impedance	4.0% / 6.0% / 8.0%
Core Material	Amorphous alloy
Winding Insulation	Cast resin
Standards	GB/T 10228

Key Features

Amorphous core — no-load loss dramatically reduced.
Cast-resin dry construction — flame-retardant and suitable for indoor installations.
Ultra-low no-load loss helps reduce lifecycle energy cost in continuously energized applications.
Ideal for green buildings and data centers.

Typical Applications

Commercial buildings
Residential complexes
Manufacturing plants

Installation & Aftercare

Prepare the site, plan routine checks and keep service records.

What needs to be ready before installation?

Provide a dry room or suitable enclosure, with ventilation designed from both no-load and load losses at the specified duty.
Keep winding cooling passages open and leave access for cleaning, terminal work and any fitted temperature or fan equipment.
Check the unit outline, mass and cable interfaces rather than assuming an amorphous-core unit matches another transformer of equal kVA.

What should operators check during routine rounds?

Observe fitted winding-temperature indications and fans during rounds, and check for dust restricting airflow.

What is covered during planned maintenance?

At planned isolation, qualified personnel clean accessible insulation and cooling passages and inspect resin surfaces, terminals and earthing connections.
Cast-resin construction requires no transformer-oil sampling; contamination, cooling faults or tracking still require attention under the dry-type maintenance programme.

Customization Options

Define the electrical configuration and the details needed for your site.

Capacity & voltage: Published capacity 200 – 2500 kVA; HV 6 / 6.3 / 10 / 10.5 / 11 kV; LV 0.4 kV. Specify the required rating and voltage combination.
Connection & taps: Dyn11. Listed tapping ±2×2.5% / ±5%.
Losses & impedance: Required no-load and load losses, short-circuit impedance and compatibility with any units operating in parallel.
Enclosure & cooling: Enclosure protection, natural or fan-assisted cooling duty, ventilation openings and cable or busbar interfaces.
Temperature monitoring: Winding-temperature indication, alarm/trip contacts and any fan-control interface to the site system.

Project-specific options and accessories are confirmed in the quotation and approved drawings.