Power Infrastructure · Transformers · MV Switchgear · RMU · Substations · LV Switchgear

Power infrastructure for energy projects across Europe and Africa.

Q: What voltage classes of power transformer does Henley Power supply?

10 kV, 35 kV, 110 kV, and 220 kV for power transformers. Substations and RMU to 40.5 kV. MV switchgear at 12 kV and 40.5 kV. LV switchgear at 0.4 kV. Voltage classes outside this range sourced on request via verified IEC-certified manufacturers.

Q: Are these compatible with European grid standards?

Equipment is manufactured to IEC 60076 (power transformers), IEC 62271-200 (metal-enclosed switchgear), IEC 62271-1 (HV switchgear), and IEC 61439 (LV assemblies), which form the basis of most European national grid codes. Country-specific compliance review — ANRE Romania, ANRE Moldova, ENTSO-E connection conditions — is part of our pre-order specification check, validated at commissioning.

Q: What warranty is provided on power infrastructure equipment?

One year minimum standard manufacturer warranty on all equipment, extendable to two years at no cost for DFI-financed and institutionally-backed tenders. Warranty contracted under Henley Power — we’re the warranty obligor, not the underlying factory. Warranty insurance via licensed European insurer is available as a project option for DFI-financed and institutionally-backed tenders. Parent guarantee or escrow alternative on request.

Q: Where is service and support located?

Henley Power services European projects from Romania and operates a 9-region service network covering EU, Eastern Europe, Central Asia, Southeast Asia, West Africa, North Africa, East Africa, Southern Africa, and LATAM. European customers reach a single sales and engineering desk in Romania for commercial, technical, and warranty matters.

Q: Can Henley Power supply T&D equipment and BESS together?

Yes — we always supply T&D for our BESS projects. The transformer, MV switchgear, and RMU are pre-paired to the BESS at specification stage: power and voltage sizing for power factor, grid-forming PCS coordination, and protection relay settings are confirmed before the BESS container ships. The EPC doesn’t resolve pairing on site.

Q: What are the lead times for transformers and switchgear?

LV switchgear: 21–28 days ex-factory. RMU and MV switchgear: 28–45 days. Box-type substations: 35–45 days. Power transformers: 35–60 days (capacity-dependent; 110 kV and 220 kV at higher end). Sea freight from China to Romania approximately 30 days. Air freight available for urgent requirements at additional cost.

Q: Is there a minimum order quantity?

No formal minimum order. Henley Power has supplied single units for project-critical equipment and full substation packages for utility-scale tenders. For single-unit orders below approximately €15,000, the per-unit logistics cost can reduce the price advantage over European sourcing — confirm the commercial case at inquiry stage.

Q: How does Henley Power compare to European OEMs on price and scope?

Chinese-manufactured IEC-certified equipment through a European supply agreement runs substantially below European OEM pricing on equivalent IEC class. The engineering differentiation is the BESS-pairing: European OEMs ship the transformer and leave impedance matching and protection coordination to the EPC. We complete both at specification stage.

Q: Can you supply equipment for off-grid microgrids in Africa?

Yes. Henley Power supplied T&D scope including step-up transformer and MV switchgear on the Chad PV-storage-diesel microgrid, commissioned 2024. Equipment was specified for Sahel ambient conditions and off-grid frequency control. Documentation package available for sub-Saharan and North African EPCs on request.

IEC-certified transformers, switchgear, ring main units, and substations. Pre-paired to Henley Power BESS at spec stage. One contract, one warranty obligor, European service from Romania.

At a glance

Henley Power supplies power transformers, MV switchgear, ring main units, box-type substations, and LV switchgear for utility-scale renewable energy projects, industrial substations, and BESS grid-connection packages across Europe and Africa. Equipment is IEC-certified, sourced from verified Chinese manufacturers, supplied under one Henley Power contract, and serviced from Romania across a 9-region network. Every T&D scope is pre-paired to the BESS at specification stage — power factor, grid-forming coordination, and protection settings confirmed before the container ships.

10–220

kV Voltage Classes
Power transformers · four classes

180 MVA

Max Transformer Capacity 50 kVA to 180 MVA range

1+1 yr

Warranty Extendable · insurance-backed option

35 d

Typical Lead Time
Ex-works Dezhou, Shandong

How we source these — straight

Henley Power manufactures BESS in-house at our Dezhou facility. For power infrastructure — transformers, substations, ring main units, switchgear — we use a multi-factory sourcing model: equipment selected from verified IEC-certified manufacturers per project, based on voltage class, certification requirements, and delivery slot.

Henley Power is the prime contractor and warranty obligor — the EPC deals with one counterparty. That’s the same single-counterparty structure European tier-one OEMs use when sourcing sub-components. What changes is the engineering: we pre-pair the T&D to the BESS at specification stage.

Why one supplier for T&D + BESS

One contract. Four product families. The BESS pairing included.

Verified IEC-certified factories · Multi-supplier pool

Equipment Matched to Your Project Spec

We work with multiple verified manufacturers across each family. Selection is per project — voltage class, certification requirements, local grid standards, and delivery slot. We don’t push a single factory’s catalogue on every project.

One contract · One warranty obligor · One European contact

Single Procurement for Full T&D Scope

Transformer, substation, RMU, and switchgear in one supply agreement. One set of commercial terms, one warranty signatory, one point of escalation. The co-ordination overhead between separate T&D vendors disappears.

European service desk · 9-region service network

European Service Spine for Project Lenders

Commercial and warranty obligations sit under Henley Power, with European projects serviced from Romania. One accountable counterparty — that’s what makes the warranty bankable for project lenders.

Impedance matched · Grid-forming coordinated · Protection pre-set

BESS-Paired Engineering at Spec Stage

Transformer, MV switchgear, and RMU pre-paired to the BESS at specification stage — not resolved on site. Power factor, grid-forming capability, and protection coordination confirmed before the container ships.

Why we pre-pair T&D to the BESS

Three-stage pairing. Completed before the container ships.

We always supply T&D equipment for our BESS projects — it’s part of the grid-connection engineering, not a separate scope. The pairing runs three stages, all completed before the BESS ships.

Stage 1 — Power & Voltage

Sizing for Power Factor

We start with the BESS rated power and the grid voltage at the point of common coupling. From those we calculate transformer kVA with power factor margin, vector group for grid synchronisation, and tap range for the operating voltage envelope.

Stage 2 — Grid-Forming

PCS Coordination

Henley Power BESS containers ship grid-forming as standard. Transformer and MV switchgear protection are pre-coordinated to the grid-forming PCS — short-circuit behaviour, fault current contribution, and re-synchronisation sequence confirmed at spec stage. EPCs receive a pre-coordinated relay setting sheet.

Stage 3 — Grid Code

Frequency, Fault Ride-Through, Harmonics

ENTSO-E network code compliance — frequency response (P/f droop), fault ride-through (LVRT/HVRT envelopes), harmonic limits per IEC 61000 — checked against the project’s TSO-specific connection conditions. TSO qualification (50Hertz, TenneT, RTE, Energinet, Fingrid, Transelectrica, etc.) confirmed per project at commissioning.

01 · Power Transformers

What power transformers does Henley Power supply?

Oil-immersed S-series and dry-type cast-resin transformers across 10 kV, 35 kV, 110 kV, and 220 kV voltage classes. 50 kVA to 180 MVA capacity range. Energy-storage-dedicated dry-type variants co-ordinated with Henley Power BESS specs for impedance matching and harmonic tolerance. We supply these as part of every BESS grid-connection project — transformer sizing is Stage 1 of the pairing sequence.

Parameter

Power Transformers

Oil-immersed S-series · Dry-type SC/SG/SGBH · IEC 60076 · 50 kVA – 180 MVA

Types available

Oil-immersed (S11/S13/S18/S20/S22 series) · Dry-type cast resin (SC/SG/SGBH series) · Energy storage dedicated — LFP-compatible thermal profile

Voltage classes

10 kV · 35 kV · 110 kV · 220 kV

Capacity range

50 kVA – 180 MVA

Winding configuration

Double winding / triple winding · Autotransformer (220 kV class)

Voltage regulation

Non-excited (NETC) · On-load tap changer (OLTC) · ±5% / ±2×2.5% / ±8×1.25% tapping ranges

Vector groups

Dyn11 · Yyn0 · YNd11 · YNyn0d11 · Scott / Harmonic-mitigating on request

Insulation system

Mineral oil + standard cellulose (standard) · DuPont Nomex® hybrid (high-temperature class)

Cooling method

ONAN / ONAF / OFAN / OFAF / ODAF per IEC 60076-2 / IEC 60076-12 · Dry-type: AN / AF

Ambient temperature

−25 °C to +40 °C standard · High-temperature variant: full-rated output maintained at 40 °C ambient

Noise (self-cooled)

≤55 dB (distribution) · <60 dB (110 kV class)

Standards

IEC 60076 (all parts) · IEC 60076-2 (temperature rise) · IEC 61378 (converter transformers — BESS variants)

Lead time

35–60 days ex-factory (capacity dependent; 110 kV and 220 kV at higher end)

Warranty

1 year minimum · extendable to 2 years for DFI-financed projects · insurance-backed option

BESS-paired note: BESS-dedicated dry-type variants co-ordinated for impedance matching (IEC 60076-8) and harmonic tolerance. Request paired datasheet via the form below.

02 · MV Switchgear

Which medium-voltage switchgear is available?

Armoured metal-enclosed MV switchgear for 12 kV and 40.5 kV three-phase AC distribution. Vacuum circuit breakers in fixed and withdrawable configurations. Five-function anti-misoperation interlock standard on all units. Protection relays are pre-coordinated to the Henley Power BESS grid-forming PCS — the relay setting sheet is issued before the BESS ships, not resolved on site.

Vector groups

12 kV

40.5 kV

Rated current

630–3,150 A

1,250–2,500 A

SC breaking current

16–50 kA rms

25–31.5 kA rms

SC closing current

40–125 kA peak

63–80 kA peak

1-min PF withstand

42 kV

95 kV (phase-ground)

Lightning impulse (BIL)

75 kV

185 kV

Protection class

Outer IP4X · CB room IP2X

Circuit breaker

VD4-12 / VS1-12 vacuum

ZN85-40.5 vacuum / SF₆

Installation

Indoor

Interlock

Five-function anti-misoperation

Standards

IEC 62271-200 · IEC 62271-100

IEC 62271-200 · IEC 62271-1

Lead time

28–35 days ex-factory

35–45 days ex-factory

03 · Ring Main Units

What ring main units does Henley Power offer?

Compact AC metal-enclosed ring main units for 12 kV and 17.5 kV MV network acceptance and distribution. SF₆ or vacuum insulation options. 31 standard main-circuit schemes cover distributed generation connection, BESS MV integration, and urban grid transformation. HXGN-12 units were supplied on the Chad PV-storage-diesel microgrid (commissioned 2024).

Rated voltage

12 kV

17.5 kV

Rated current

400 A / 630 A

SC withstand (1 s)

12.5 kA / 25 kA

SC closing current

31.5 kA / 62.5 kA peak

PF withstand voltage

42 kV (phase-ground)

38 kV (phase-ground)95 kV (phase-ground)

Lightning impulse (BIL)

75 kV

95 kV

Protection class

IP3X

Main circuit schemes

31 standard schemes available

Interlock

Five-function anti-misoperation (IEC 62271-200 compliant)

Ambient temperature

−25 °C to +40 °C

Standards

IEC 62271-200 (supersedes IEC 60298)

Lead time

28–35 days ex-factory

04 · Box-Type Substations

Which box-type substations are available?

Pre-assembled HV/LV substation packages combining switchgear, transformer, and LV distribution in a single enclosure. Factory-commissioned and site-energisable within hours of delivery. Containerised variants integrate PV inverters, transformer, and HV/LV switchgear in one 20-ft or 40-ft unit — suited to utility solar-storage projects and remote sites.

Parameter

Pre-Installed Substations

YBW-12/40.5 kV (European) · ZGS-12 (American) · Containerised

Types available

European box-type (YBW-12 / YBW-40.5 kV) · American fully-sealed (ZGS-12) · Containerised intelligent substation · New energy generation combined substation

HV rated voltage

12 kV · 40.5 kV

Transformer capacity

50 kVA – 2,500 kVA

HV side

Ring network or terminal configuration · Vacuum / SF₆ load switch · Five-function anti-misoperation interlock

LV side

Take-away gallery or fixed type · Capacitor compensation: 15–30% of transformer capacity

Protection class

IP33D / IP54D (European) · Fully sealed (American)

Ambient temperature

−25 °C to +40 °C (European) · −30 °C to +45 °C (American)

Maximum altitude

≤1,000 m standard · plateau type available above 1,000 m

Noise

≤55 dB

Standards

IEC 62271-202 equivalent · IEC 60076 (transformer) · IEC 62271-100/200 (switchgear)

Lead time

35–45 days ex-factory

Warranty

1 year minimum · extendable to 2 years for DFI-financed projects

Containerised substation: Integrates PV inverters, transformer, and HV/LV switchgear in one 20-ft or 40-ft container. IP54, ocean transport rated. Suitable for utility solar + storage projects in remote locations.

05 · LV Switchgear

What low-voltage switchgear is supplied?

MNS low-voltage draw-out switchgear for industrial and commercial applications. 380/400 V rated. Horizontal bus rated 630 to 6,300 A. The 25 mm C-profile modular system supports 200+ component configurations. IEC 61439-1 and IEC 61439-2 compliant. Shortest lead time in the range at 21–28 days.

Parameter

MNS LV Switchgear

Draw-out · IEC 61439 · 380/400 V

Type

MNS low-voltage draw-out (withdrawable)

Rated voltage

380 V / 400 V (operating) · 660 V (insulation)

Rated current (horizontal bus)

630–6,300 A

Rated current (vertical bus)

800–2,000 A

SC withstand (horizontal)

50 kA (1 s)

SC withstand (vertical)

60 kA rms / 130–150 kA peak

Protection class

IP40 / IP54

Frame dimensions

H 2,200 mm × W 400/600/800/1,000 mm × D 600/1,000 mm

Module system

25 mm C-profile modular — 200+ component configurations

Standards

IEC 61439-1 (general rules) · IEC 61439-2 (power switchgear & controlgear assemblies)

Lead time

21–28 days ex-factory

Warranty

1 year minimum · extendable on request

Reference single-line diagram

BESS grid-connection package — how the families compose.

Illustrative reference SLD for a utility BESS project with full Henley Power T&D scope. IEC 61850-7-420 (DER profile) labels the BESS-PCS communications side; IEC 61850-8-1 labels the station-bus side. Final SLD issued per project — voltage class, protection relay settings, vector group, and grid code compliance confirmed at specification stage.

Where this equipment deploys

Six project verticals. One supply agreement.

Each application uses one or more product families from the Henley Power infrastructure range. For projects combining BESS and T&D, the full package is co-ordinated under one supply agreement — from transformer sizing through to protection relay settings.

BESS Grid-Connection Packages

Step-up transformer + MV switchgear + RMU supplied alongside the BESS, with pairing engineered at spec stage. Closes the scope gap that typically delays commissioning by 4–8 weeks on projects where T&D is procured separately.

Utility Solar Step-Up

10 kV or 35 kV step-up transformers for large-scale PV plants. Combiner substation configurations supplied as pre-assembled box-type units, reducing civil work at the plant. BESS co-location uses the same transformer scope.

Industrial Substation Replacement

Factory-assembled box-type substations with pre-wired HV and LV rooms. Energisable within hours of delivery, versus weeks for site-built alternatives. Single-unit orders accepted; no formal minimum order. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Wind Farm Collection Network

Pad-mount transformers, MV ring mains, and central step-up substation co-ordinated through one supply agreement with one documentation package for the lender. 35 kV and 110 kV collection systems covered.

EPC Packages · Africa & Eastern Europe

Henley Power supplied T&D scope on the Chad PV-storage-diesel microgrid (commissioned 2024). IEC-certified equipment at Chinese manufacturing cost. 35–45 day delivery versus 12–20 weeks from European OEM suppliers.

MV Distribution · Data Centres & Telecoms

KYN28-12 MV switchgear with vacuum circuit breakers and five-function anti-misoperation interlock. Standard configurations deliver in 28 days. Known supply chain, documented test reports, EU warranty obligor.

Where this platform deploys

Six commercial buyer verticals deployed.

Each vertical sizing example below assumes typical European C&I load profiles. Final cluster sizing depends on metered load data, tariff structure, and backup requirements.

Small Offices & Retail Stores

Office buildings under 2,000 m² and retail stores draw 20–60 kW base load with afternoon peaks. A 3-module cluster (96 kWh, 768 V class) covers a typical retail demand-charge cycle on a 100 kW connection. PV self-consumption mode absorbs rooftop export during business hours. Payback depends on the local demand charge tariff — but the indoor IP21 enclosure fits most utility rooms without civil work.

EV Charging Hubs

Highway and urban DC fast-charging hubs with three to six 150 kW chargers see instantaneous grid spikes that trigger demand penalties or require grid reinforcement. A 6 to 9 module cluster (193–290 kWh) buffers those spikes — the battery discharges during charging events and recharges between sessions. For 350 kW HPC hubs, cluster sizing scales with simultaneous-charging load. DC-coupled deployment minimises conversion losses.

Supermarkets & Food Retail

Supermarkets run 24/7 refrigeration loads of 80–200 kW baseline plus checkout, lighting, and HVAC. A 6-module cluster (193 kWh) handles evening demand charges on a 250 kW connection while holding capacity for refrigeration backup — typically 30 to 60 minutes of hold-up. ToU arbitrage runs daily on the refrigeration baseload. Sizing depends on store class and local tariff.

Cold Storage & Cold Chain

Cold storage warehouses up to 1,500 m² and refrigerated logistics hubs need continuous power for chambers and dock systems. A 10 to 15 minute outage spoils inventory — there’s no buffer. A 3 to 6 module cluster (96 to 193 kWh) runs continuous ToU arbitrage on refrigeration baseload and switches to backup on grid loss. Hold time depends on cluster size and load.

Telecom & Edge Infrastructure

Telecom base stations, edge data nodes, and small ISP hubs need 24/7 power continuity for 5–30 kW loads. A 3-module cluster (96 kWh) provides 3 to 12 hours backup at full load — longer at partial loads. Daily ToU cycling on the active grid connection generates economic return alongside the backup reserve. Indoor IP21 fits standard telecom enclosures; DC-coupled deployment with site rectifiers is the most common architecture. Henley Power supplied T&D scope on the Chad PV-storage-diesel microgrid (commissioned 2024). IEC-certified equipment at Chinese manufacturing cost. 35–45 day delivery versus 12–20 weeks from European OEM suppliers.

Small Industrial & Manufacturing

Workshop-scale metalworking, plastics, and light manufacturing facilities draw 100–400 kW with sharp process-driven peaks. A 6 to 15 module cluster (193–483 kWh) covers demand-charge management on a 500 kW connection and provides 15 to 45 minute backup for critical processes. PV self-consumption pairs naturally with rooftop solar on manufacturing roofs. Sizing depends on process load profile and backup criticality — we don’t publish a one-size answer here.

Standards & certifications

IEC-certified across all five families.

All equipment comes with full type-test documentation from CNAS-accredited laboratories. Test reports, factory acceptance records, and certificate copies available under NDA on request.

ISO 9001:2015

ISO 14001:2015

ISO 45001:2018

IEC 60076

IEC 62271-200

IEC 62271-1

IEC 62271-100

IEC 61439-1/2

IEC 61378

CNAS Lab

CE Declaration

RoHS

IEC-certified equipment at Chinese manufacturing cost. One warranty obligor.

Every family ships with CNAS-accredited type-test reports. CE declaration per unit. Country-specific certifications — ANRE Romania, ANRE Moldova — co-ordinated on request. For DFI-financed tenders, full documentation package including project references, bill-of-materials with factory-of-origin per line item, and EU-jurisdiction warranty terms provided under NDA. Documentation engineered to project-finance lender due-diligence standards.

Project finance ready

LiFePO₄ chemistry satisfies EU Battery Regulation supply chain due diligence and carbon footprint declaration requirements. CE marked. EU-based warranty service and spare parts logistics — no dependency on Chinese service channels.

Frequently asked questions

Common questions from EPCs, utilities, developers, and project finance teams evaluating Henley Power.

Specifications, sourcing, warranty, deployment, bankability — answered directly, with the numbers and references buyers need for due diligence and tender response.

What voltage classes of power transformer does Henley Power supply?

10 kV, 35 kV, 110 kV, and 220 kV for power transformers. Substations and RMU to 40.5 kV. MV switchgear at 12 kV and 40.5 kV. LV switchgear at 0.4 kV. Voltage classes outside this range sourced on request via verified IEC-certified manufacturers.

Are these compatible with European grid standards?

Equipment is manufactured to IEC 60076 (power transformers), IEC 62271-200 (metal-enclosed switchgear), IEC 62271-1 (HV switchgear), and IEC 61439 (LV assemblies), which form the basis of most European national grid codes. Country-specific compliance review — ANRE Romania, ANRE Moldova, ENTSO-E connection conditions — is part of our pre-order specification check, validated at commissioning.

What warranty is provided on power infrastructure equipment?

One year minimum standard manufacturer warranty on all equipment, extendable to two years at no cost for DFI-financed and institutionally-backed tenders. Warranty contracted under Henley Power — we’re the warranty obligor, not the underlying factory. Warranty insurance via licensed European insurer is available as a project option for DFI-financed and institutionally-backed tenders. Parent guarantee or escrow alternative on request.

Where is service and support located?

Henley Power services European projects from Romania and operates a 9-region service network covering EU, Eastern Europe, Central Asia, Southeast Asia, West Africa, North Africa, East Africa, Southern Africa, and LATAM. European customers reach a single sales and engineering desk in Romania for commercial, technical, and warranty matters.

Can Henley Power supply T&D equipment and BESS together?

Yes — we always supply T&D for our BESS projects. The transformer, MV switchgear, and RMU are pre-paired to the BESS at specification stage: power and voltage sizing for power factor, grid-forming PCS coordination, and protection relay settings are confirmed before the BESS container ships. The EPC doesn’t resolve pairing on site.

What documentation is provided for project finance lenders?

What are the lead times for transformers and switchgear?

LV switchgear: 21–28 days ex-factory. RMU and MV switchgear: 28–45 days. Box-type substations: 35–45 days. Power transformers: 35–60 days (capacity-dependent; 110 kV and 220 kV at higher end). Sea freight from China to Romania approximately 30 days. Air freight available for urgent requirements at additional cost.

Is there a minimum order quantity?

No formal minimum order. Henley Power has supplied single units for project-critical equipment and full substation packages for utility-scale tenders. For single-unit orders below approximately €15,000, the per-unit logistics cost can reduce the price advantage over European sourcing — confirm the commercial case at inquiry stage.

How does Henley Power compare to European OEMs on price and scope?

Chinese-manufactured IEC-certified equipment through a European supply agreement runs substantially below European OEM pricing on equivalent IEC class. The engineering differentiation is the BESS-pairing: European OEMs ship the transformer and leave impedance matching and protection coordination to the EPC. We complete both at specification stage.

Can you supply equipment for off-grid microgrids in Africa?

Yes. Henley Power supplied T&D scope including step-up transformer and MV switchgear on the Chad PV-storage-diesel microgrid, commissioned 2024. Equipment was specified for Sahel ambient conditions and off-grid frequency control. Documentation package available for sub-Saharan and North African EPCs on request.

Get a matched T&D + BESS quote

Talk to engineering.

Engineering response within 24 hours. We cover product specification, grid code review, impedance matching for BESS-paired projects, and indicative pricing.