Water Treatment & Desalination Switchgear Solutions
Seawater desalination plants, municipal water treatment facilities, and wastewater treatment plants operate in some of the most electrically demanding environments in the utility sector - corrosive salt-laden air, continuous high-power pumping loads, and zero tolerance for supply interruption to intake, RO, and lift-station pumps. Zhejiang Gangheng Electric has manufactured HV, MV and LV switchgear since 2004, supplying power distribution equipment for seawater reverse osmosis (SWRO) plants, independent water & power producer (IWPP) projects, municipal water treatment works, and wastewater treatment facilities across the Middle East, Africa, and Asia. Our equipment is built to IEC standards, corrosion-rated for coastal and chemically aggressive environments, and backed by committed delivery schedules aligned to plant commissioning timelines.
Switchgear & Power Distribution Products for Water Treatment & Desalination Facilities
Power distribution at desalination and water treatment plants spans intake pump stations, high-pressure RO pump motor loads, chemical dosing systems, and outfall/lift-station pumping - typically from a 10kV or 35kV main receiving substation down through 0.4kV motor control at each process area. Gangheng supplies the full MV/LV equipment range for plant main substations, RO train switchrooms, and remote lift-station/pump-house locations, fully configurable to project voltage and local grid/utility standards.
High & Medium Voltage Switchgear - 12kV & 40.5kV
KYN28A-12 Indoor Metal-Clad Moveable Switchgear (12kV)
The standard choice for 10kV incoming panels and high-pressure RO pump motor feeder distribution at desalination plant main substations. Supports vacuum circuit breakers and microprocessor-based protection relays for automatic fault isolation of large motor loads. Five-prevention mechanical interlock system supports strict access control requirements typical of water utility operators.
KYN61-40.5 Armored Removable Switchgear (40.5kV)
Engineered for 35kV main receiving substations at large-scale SWRO and IWPP desalination complexes. Designed for high short-circuit withstand (up to 40kA) and internal arc fault protection, compatible with the bulk power entry requirements of large intake and high-pressure pump station loads.
HXGN / XGN2-10 Ring Main Units (10kV)
Compact ring-network switchgear for looped 10kV distribution between distributed pump stations, lift stations, and chemical dosing buildings spread across a large treatment plant or pipeline corridor - common in municipal water and wastewater network layouts.
Low Voltage Switchgear & MCC - 0.4kV / 380V
MNS & GCS Series Low Voltage Withdrawable Switchgear
Configured as Motor Control Centers (MCC) for continuous-duty intake pumps, high-pressure RO feed pumps, and dosing pump loads. Fully withdrawable drawer modules support hot-swap under power - a faulty pump feeder can be isolated and replaced without de-energising the main busbar, critical for plants with no permitted supply interruption to intake or outfall pumping.
GGD Fixed Low-Voltage Switchgear
A robust fixed-type distribution cabinet suited to auxiliary power distribution in pump houses and lift-station buildings where structural durability under corrosive, humid duty cycles takes priority over modular flexibility.
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Dry-Type Transformers & Prefabricated Compact Substations
For indoor plant substation applications, Gangheng supplies dry-type transformers eliminating oil leakage risk for installations near process water and chemical storage areas. Prefabricated compact substations integrating HV switchgear, transformer, and LV distribution in a single factory-assembled enclosure are available for rapid deployment at remote intake pump stations, lift stations, or expanded treatment trains - reducing civil construction time and on-site cabling at dispersed water infrastructure sites.
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Configured for Water Treatment & Desalination Environments
Standard switchgear is not adequate for the salt-laden, humid, and chemically corrosive conditions found at desalination and water treatment facilities. Gangheng equipment for water sector applications is specifically configured for:
Corrosion-Resistant Enclosure Construction
Enclosures finished with epoxy anti-corrosion coatings or hot-dip galvanised treatment rated for C4/C5-M corrosion category environments. Stainless steel (SS304 / SS316L) enclosure options standard for coastal SWRO intake areas and chemical dosing buildings exposed to salt spray or chlorine/chemical vapour.
High Enclosure Protection Ratings
IP54 enclosure rating standard for indoor pump-house switchrooms; IP65 available and commonly specified for outdoor lift stations, intake structures, and wastewater treatment plant equipment exposed to washdown, humidity, or hydrogen sulphide (H₂S) corrosive gas.
Continuous-Duty Motor Load Support
High short-circuit withstand busbars and current-limiting circuit breakers for reliable fault clearing under large intake, RO high-pressure, and lift-station pump motor loads. Zone selective interlocking (ZSI) ensures only the faulted pump feeder trips, keeping remaining process pumps in continuous operation.
Remote Site Monitoring & Diagnostics
Intake structures, lift stations, and outfall pump houses are frequently located away from the main plant control room. Switchgear equipped with intelligent I/O modules and 4G/5G DTU uploads breaker status and fault data to SCADA, supporting remote operation for dispersed water infrastructure assets.
Modular, Quick-Replacement Design
Standardised functional units allow a faulted feeder module to be fully withdrawn and replaced without de-energising the main plant supply - recovery time reduced from hours to minutes, protecting continuous intake and outfall pumping operations.
Application Scenarios in Water Treatment & Desalination
Seawater Reverse Osmosis (SWRO) & IWPP Plant Main Substations
Large-scale desalination and independent water & power producer (IWPP) projects across the Gulf region require main receiving substations capable of supplying continuous, high-power intake and high-pressure RO feed pump loads. KYN61-40.5 serves as the 35kV incoming panel; KYN28A-12 handles 10kV feeder distribution to RO train motor control centers. Protection relay coordination and full FAT documentation provided for plant owner and grid operator acceptance.
Municipal Water Treatment Plant Distribution
Conventional water treatment works - coagulation, filtration, and clear-water pumping stages - require dependable MV/LV distribution across multiple process buildings. GH configures HV switchgear with LV distribution cabinets and dry-type transformers as integrated substation packages sized to each treatment stage's motor and utility load.
Wastewater Treatment & Lift Station Pumping
Wastewater treatment plants and network lift stations present corrosive hydrogen sulphide (H₂S) gas exposure that degrades standard steel enclosures within months. GH supplies stainless steel (SS304/SS316L) IP65 switchgear for aeration, sludge handling, and lift-station pump control, commonly specified for World Bank and African Development Bank-funded water and sanitation infrastructure projects.
Intake Pump Stations & Outfall Structures
Seawater intake and outfall pump structures at coastal desalination plants require corrosion-rated, high-protection switchgear capable of continuous operation in direct salt-spray exposure, frequently at sites remote from the main plant control building.
Water Network Expansion & Distribution Upgrades
Rapid urban growth across the Middle East and Africa is driving continuous expansion of desalination capacity and water/wastewater network coverage. GH specialises in capacity upgrade projects for operating plants - engineering equipment solutions that can be installed within available shutdown windows, minimising supply interruption to municipal customers.
Why Water Utility & Desalination Project Teams Specify Gangheng
1. Committed Delivery Against Project Milestones
Desalination and water treatment plant commissioning schedules are fixed by concession agreements, EPC contract milestones, and municipal supply commitments. We provide contractual delivery commitments:
|
Order Value |
Delivery Lead Time |
|
USD $300,000 |
30 days |
|
USD $700,000 |
45 days |
|
USD $1,500,000 |
60 days |
2. Complete HV-to-LV Equipment Package from a Single Supplier
A single equipment source for HV switchgear, LV distribution, dry-type transformers, and prefabricated substations simplifies procurement for dispersed water infrastructure sites (intake, main plant, lift stations), reduces inter-supplier interface risk, and provides a single point of technical responsibility.
Technical Specifications at a Glance
|
Parameter |
Gangheng Standard |
|
Voltage Range |
0.4kV LV · 12kV MV · 40.5kV MV |
|
Primary Standards |
IEC 62271 / ANSI C37 / BS EN / GB/T (all configurable) |
|
Quality Certifications |
ISO 9001 · ISO 14001 · OHSAS 18001 · CQC |
|
Enclosure Protection |
IP4X standard; IP54 / IP65 available |
|
Enclosure Material |
Al-Zn coated steel; hot-dip galvanised; SS304 / SS316L options |
|
Anti-Corrosion Rating |
C4 / C5-M coating available |
|
Short-Circuit Withstand |
Up to 40kA (model-dependent; confirm per project SLD) |
|
Arc Flash Protection |
Type-tested internal arc per IEC 62271-200 |
|
Communication Protocol |
IEC 61850, Modbus RTU, RS485 (relay-dependent) |
|
Transformer Type |
Dry-type (indoor, fire-safe); Oil-immersed (outdoor) |
|
Customisation |
OEM/ODM; non-standard dimensions; component-level options |
Frequently Asked Questions
Q: Does Gangheng supply switchgear suitable for coastal desalination plant environments with salt-spray exposure?
A: Yes. Our standard offering for coastal and desalination applications includes stainless steel (SS304/SS316L) enclosures, C4/C5-M anti-corrosion coatings, and IP65 protection ratings, engineered specifically for continuous salt-spray exposure at intake structures and outdoor pump stations.
Q: Can your switchgear handle the corrosive hydrogen sulphide (H₂S) environment typical of wastewater treatment plants?
A: Yes. We supply stainless steel double-door enclosures with potted control circuits and conformal-coated circuit boards, a configuration widely specified for wastewater treatment plants and lift stations where H₂S gas corrodes standard steel enclosures within months.
Q: Can your equipment meet IEC or ANSI standards required by international EPC contractors on desalination/IWPP projects?
A: Yes. Our standard production follows China GB/T specifications, and all equipment can be fully re-engineered to IEC 62271, ANSI/IEEE C37, or BS EN standards to match your project's technical specification, protection relay settings, and documentation requirements.
Q: Do you supply switchgear for remote intake pump stations or lift stations with limited site access?
A: Yes. Our switchgear can be equipped with 4G/5G DTU communication modules for remote SCADA monitoring and fault diagnostics, and prefabricated compact substations are available to minimise on-site civil and cabling work at dispersed pump station locations.
Q: What warranty and after-sales support do you provide for water sector installations?
A: 12 months warranty from project acceptance, with 5-year latent defect coverage. 24/7 remote technical support and spare parts at non-premium pricing are standard. On-site technical support can be arranged for international projects.
Q: What documentation can you provide for World Bank / African Development Bank-funded or IWPP project technical review?
A: Full documentation package including IEC type test reports, routine test certificates, FAT protocols, single-line diagrams, equipment layout drawings, protection relay coordination sheets, and multilingual technical manuals. Third-party inspection (SGS, BV, TÜV) can be arranged on request.
Request a Technical Proposal & Quote Within 24–48 Hours
Our engineering team is ready to review your single-line diagrams, equipment specifications, or project technical requirements - whether your project involves a new desalination plant main substation, a municipal water treatment distribution upgrade, or corrosion-rated switchgear for a wastewater lift station. Gangheng Electric delivers IEC-compliant MV/LV switchgear with committed lead times and complete project documentation support.