Products
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From amorphous alloy dry-type transformers to LV switchgear assemblies and box-type substations, Coreda covers the 10 kV, 20 kV and 35 kV classes and configures every unit to the conditions of the project.
Product families 01 · 6 products
Dry-type transformers
Amorphous-alloy and epoxy cast-resin dry-type transformers with class H insulation — flame-retardant, explosion-proof and suitable for load centres in buildings and rail transit.
SCBH19
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
SCBH19 Amorphous-Alloy Dry-Type Transformer
Amorphous-alloy dry-type transformer meeting the Chinese Grade 1 efficiency standard, with vacuum-cast epoxy insulation and 15%–30% lower no-load loss.
SCBH17
Rated capacity:
100–2500 kVA
Voltage class:
10 kV / 0.4 kV
SCBH17 Amorphous-Alloy Dry-Type Transformer
Grade 2 efficiency dry-type transformer: 15% lower no-load loss, 10% lower load loss and about 20% lower no-load current than SCBH15.
SCBH15 / SGBH15
Rated capacity:
30–2500 kVA
Voltage class:
6–10 kV / 0.4 kV
SCBH15 / SGBH15 Amorphous-Alloy Dry-Type Transformer
Amorphous-alloy core with three-phase five-limb structure: no-load loss 75% below conventional dry-type units, installable inside load centres.
SC(B)11–SC(B)18
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
10 kV SC(B)11–SC(B)18 Epoxy Cast-Resin Dry-Type Transformer
10 kV epoxy cast-resin dry-type transformer with low noise, low loss and low partial discharge — a replacement for oil-immersed distribution transformers.
SC(B)10 / SC(B)11
Rated capacity:
50–20000 kVA
Voltage class:
20 kV, 35 kV / 0.4 kV (power type 3.15–11 kV)
20 kV and 35 kV SC(B)10 / SC(B)11 Dry-Type Transformer
Low-loss dry-type transformer stepping 35 kV or 20 kV grid supply directly down to 400 V distribution or 10 kV transmission.
SG(B)10 / SG(B)11
Rated capacity:
30–2500 kVA
Voltage class:
6–11 kV / 0.4 kV
Class H Non-Encapsulated Dry-Type Power Transformer
Non-encapsulated dry-type transformer free of combustible resin, with Nomex® insulation, VPI curing and 20% continuous overload without forced cooling.
Product families 02 · 7 products
Oil-immersed power transformers
S11–S22 low-loss oil-immersed distribution transformers and SBH-series amorphous-alloy units — fully sealed, maintenance-free, with no-load losses up to 70% below silicon-steel designs.
S11 / S13 / S14 / S20 / S22
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
S11–S22 Three-Dimensional Wound-Core Oil-Immersed Transformer
Distribution transformer with a three-phase triangular wound core: no joints, no air gaps and no-load losses 25–35% below stacked-core designs.
SBH25
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
SBH25 Amorphous-Alloy Oil-Immersed Transformer
Amorphous alloy wound core in a fully sealed corrugated tank; no-load loss is about one third to one quarter of a comparable S13 silicon-steel unit.
SBH15
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
SBH15 Amorphous-Alloy Oil-Immersed Transformer
Core wound from amorphous alloy strip, with no-load loss about 70% below an S9 transformer, a copper-foil LV winding and Dyn11 vector group.
SBH15-M
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
SBH15-M Sealed Amorphous-Alloy Power Transformer
Fully oil-filled sealed amorphous-alloy power transformer: no-load loss 70% below the GB/T 6451 group I values and load loss 15% below standard.
SBH21
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
SBH21 Amorphous-Alloy Oil-Immersed Transformer
Grade 2 efficiency amorphous-alloy oil-immersed transformer to GB 20052-2020: no-load loss as low as the SBH15, load loss around 15% lower.
S13 / S20 / S22
Rated capacity:
30–2500 kVA
Voltage class:
10 kV / 0.4 kV
S13 / S20 / S22 10 kV Low-Loss Power Transformer
New-generation energy-saving distribution transformer covering 30–2500 kVA for 10 kV, 50 Hz transmission and distribution systems.
S11
Rated capacity:
30–2500 kVA
Voltage class:
10 kV · 20 kV
S11 Series 10 kV and 20 kV Low-Loss Power Transformer
Three-phase oil-immersed distribution transformer in a fully sealed corrugated tank, with no-load loss averaging 30% below the GB/T 6451 values.
Product families 03 · 4 products
HV & LV switchgear assemblies
GCS, GCK and MNS withdrawable and GGD fixed low-voltage AC switchgear for incoming supply, feeders, motor control and reactive power compensation.
GCS
Rated voltage:
AC 380 V / 660 V, 50/60 Hz
Rated current:
≤ 4000 A
GCS AC Low-Voltage Withdrawable Switchgear
Withdrawable LV switchgear assembly for 50/60 Hz, 380/660 V networks up to 4000 A, used for incoming and feeder circuits and centralised motor control.
GGD
Rated voltage:
AC 380 V, 50 Hz
Rated current:
≤ 3150 A
GGD AC Low-Voltage Switchgear
Fixed-type LV switchgear for 50 Hz, 380 V distribution systems up to 3150 A, with high breaking capacity and good dynamic and thermal stability.
MNS
Rated voltage:
AC up to 660 V, 50/60 Hz
Rated current:
to order
MNS AC Low-Voltage Withdrawable Switchgear
Modular withdrawable LV switchgear for 50/60 Hz systems up to 660 V, used as a power distribution centre (PC) or a motor control centre (MCC).
GCK
Rated voltage:
AC 380 V, 50–60 Hz
Rated current:
to order
GCK AC Low-Voltage Withdrawable Switchgear
Withdrawable LV switchgear assembly for three-phase 50–60 Hz, 380 V systems, serving as power distribution (PC) and centralised motor control (MCC) equipment.
Product families 04 · 3 products
Box-type substations
Chinese-style, American-style (compact pad-mounted) and YBM European-style prefabricated substations integrating HV switchgear, transformer and LV distribution in one compact, quick-to-install unit.
Chinese-style
Rated capacity:
to order
HV rating:
to order
Chinese-Style Box Substation
Compact outdoor prefabricated substation with the transformer outside the enclosure and the HV and LV switchrooms inside: good cooling, easy maintenance.
ZGS11
Rated capacity:
100–1600 kVA
HV rating:
6–11 kV (6 / 6.3 / 6.6 / 10 / 10.5 / 11 kV)
ZGS11 Combined Transformer Series (American-Style Pad-Mounted Substation)
ZGS11 combined transformers (American-style pad-mounted), 100–1600 kVA, fully sealed tank and fully insulated design, for ring-main or radial supply.
YBM
Rated capacity:
to order
HV rating:
to order
YBM Prefabricated Box Substation (European-Style)
Factory-built assembly of HV switchgear, distribution transformer and LV switchgear in a fully enclosed steel housing: small footprint, safe operation.
Solutions and quotations
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- Amorphous alloy transformers
- Custom configuration
- Type-test reports
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