Shanghai Mars Electric Power Equipment Co., Ltd.
A Chinese manufacturer of power transmission and distribution equipment, headquartered in Pudong New Area, Shanghai — designing, building, testing and servicing a complete power chain from 5 kVA distribution transformers to 10 MWh energy storage containers.
Company
Shanghai Mars Electric Power Equipment Co., Ltd. (MARS) designs, manufactures, tests and services a complete power chain — oil-immersed and cast-resin dry-type transformers, power transformers, pad-mounted and pole-mounted transformers, compact and box-type substations, medium- and low-voltage switchgear and ring main units, and lithium-iron-phosphate energy storage systems, from outdoor cabinets to megawatt-scale liquid-cooled containers.
Our range covers 5 kVA to 31,500 kVA at 3 kV to 35 kV, with power-class units up to 110 kV, and energy storage from 40 kWh cabinets to 10 MWh containerised systems. Every unit is built to IEC 60076 and IEC 62271, with ANSI/IEEE, GB and GOST-compliant designs available for projects in North America, Europe, the Middle East, Africa, Southeast Asia and the CIS.
Because we engineer and build in-house, almost everything is customisable: capacity, voltage ratio, vector group, winding material, insulation class, enclosure protection and cooling. Tell us the grid and the site, and we will build the equipment to match.
Factory
MARS equipment is built in our own workshops, not sourced and re-badged. Our 25,000 m² Shanghai manufacturing base runs as four connected production lines under one roof: transformer winding and assembly, switchgear and cabinet fabrication, compact substation and container integration, and energy storage assembly — each served by overhead travelling cranes and finished on a single, continuously routed assembly floor.
Production begins at the winding shop, where oxygen-free copper conductor is drawn from stock reels and wound on CNC-controlled winding machines for both foil and wire coils. Cast-resin coils are vacuum-cast and cured in-house; oil-immersed cores are stacked, clamped, vapour-phase dried and tanked; tanks and cabinet enclosures are cut, punched, folded and powder-coated on our own sheet-metal line. Switchgear and low-voltage panels are assembled and wired at dedicated stations, then bench-tested cabinet by cabinet before the busbar and secondary wiring are signed off.
Testing and quality
Every unit passes routine testing before it leaves — winding resistance, turns ratio, insulation resistance, no-load and load loss, applied and induced voltage withstand, partial discharge — and temperature-rise and dielectric type tests on request. Energy storage systems add cell-grading, BMS communication, insulation, liquid-cooling leak and full charge/discharge verification.
Finished equipment is shrink-wrapped, palletised or cased in fumigation-free wooden crates and shipped worldwide, with documentation packs, type-test reports and factory acceptance tests (FAT) arranged on request — customer and third-party witness testing welcome. Read our FAT checklist for what a full acceptance programme covers.
| Test | Applies to | When |
|---|---|---|
| Winding resistance, ratio & vector group | All transformers | Routine, every unit |
| No-load & load loss, impedance | All transformers | Routine, every unit |
| Applied & induced voltage withstand | All transformers | Routine, every unit |
| Partial discharge | Dry-type and ≥ 10 kV oil-immersed | Routine / on request |
| Temperature rise, lightning impulse | Transformers | Type test, on request |
| Dielectric, mechanical operation, IP | Switchgear & substations | Routine, every panel |
| Cell grading, BMS, insulation, leak, charge/discharge | Energy storage | Routine, every system |
Certifications
A certified management system and product approvals for four regulatory regions.
| Certificate | Standard / scope | Body | Validity |
|---|---|---|---|
| Quality Management System | ISO 9001:2015 / GB/T 19001-2016 | NOA (CNAS / IAF) | 12 May 2024 – 11 May 2027 |
| Environmental Management System | ISO 14001:2015 / GB/T 24001-2016 | NOA (CNAS / IAF) | 28 May 2024 – 27 May 2027 |
| Occupational Health & Safety | ISO 45001:2018 / GB/T 45001-2020 | NOA (CNAS / IAF) | 3 Apr 2025 – 2 Apr 2028 |
| CE — Type Approved | EN IEC 61558-1:2019, LVD 2014/35/EU; power transformers 5 kVA–31,500 kVA, 3–35 kV | ECM (Italy) | 20 Sep 2024 – 19 Sep 2029 |
| Technical Inspection Attestation | EN/IEC 62271-1, EN/IEC 60076-1; oil-immersed, dry-type, compact substation, HV & LV switchgear | UDEM (Türkiye) | 26 Apr 2024 – 25 Apr 2029 |
| EAEU Declaration of Conformity | TR CU 004/2011 (LVD), TR CU 020/2011 (EMC); GOST IEC 60076-1/-11 | EAEU / TESTPROM | 16 Apr 2024 – 15 Apr 2029 |
Certified models include S9/S11/S18/S20/S22, S11-M, S13-M, SH15-M, SCB10-14/18, SCBH15-19, D11, DH15, ZGS, YB, KYN28/KYN28A, HXGN12, SF6, GGD, GCS, GCK and MNS.
Exhibitions
Meet the MARS team at power and renewable-energy trade fairs — or arrange a factory visit in Shanghai.
How we work with you
- 1
Enquiry
Send the rating, voltage ratio, frequency, standard, quantity and destination — or a single-line diagram. Use the quote list to send several items at once.
- 2
Technical proposal
Within one working day an engineer confirms the configuration, flags anything that needs a decision (vector group, impedance, IP class, cooling) and prices it.
- 3
Drawing approval
Outline drawings, nameplate data and test plan are issued for approval before production starts.
- 4
Production and testing
Typical lead time is 25–45 days for distribution transformers and switchgear. Routine tests on every unit; FAT witnessed by you or a third party if required.
- 5
Packing and shipping
Fumigation-free crates, oil-filled or dry shipment as specified, impact recorders on request. EXW, FOB, CIF or DAP with full document packs.
- 6
Installation support
Installation guidance, commissioning checklists and remote support; on-site commissioning by arrangement.
Frequently asked questions about MARS
Where is MARS located?
Our head office is in Room 1001, Jin Gang Building, No. 55 Aona Road, Pudong New Area, Shanghai, China, with the manufacturing base in the Shanghai area. Both are about one hour from Pudong International Airport.
Is MARS a manufacturer or a trading company?
A manufacturer. Winding, resin casting, core assembly, tank fabrication, painting, switchgear assembly and testing are done in our own 25,000 m² plant under an ISO 9001 system audited by NOA, ECM and UDEM.
Which markets do you export to?
Customers in more than 40 countries across the Middle East, Africa, South and Southeast Asia, the CIS, Europe, Latin America and Oceania. Certifications cover the EU (CE), Türkiye (UDEM), the Eurasian Economic Union (EAC) and China (CQC).
What payment and delivery terms do you accept?
Typically 30 % T/T deposit with the balance before shipment, or irrevocable L/C at sight for larger orders. EXW, FOB Shanghai, CIF and DAP terms are all available.
Do you provide installation and commissioning?
We provide installation guidance, commissioning checklists and remote support as standard, and can send engineers for on-site supervision and commissioning by arrangement.