Multi-OEM service · Stamford / Leroy-Somer
Stamford / Leroy-Somer Generator Service
Independent multi-OEM workshop for Stamford + Leroy-Somer synchronous generators — service from 1 to 365 MVA, multi-brand. HCI / PI / LSA series. MX341 / MX321 / SX440 AVR diagnosis. Standby + emergency generation specialty. Mexico + Central America.
Independent multi-OEM workshop
About our Stamford / Leroy-Somer service
Stamford (Cummins Generator Technologies) and Leroy-Somer (Nidec) are the dominant Western OEMs in the industrial standby + emergency generation segment 0.5-15 MVA. Strong installed base in Mexican hospitals (NFPA 110 Level 1), datacenters Tier III/IV (Uptime Institute), commercial buildings, and small industrial backup. TEMISA Power Gen services Stamford + Leroy-Somer generators under IEC 60034 and the EASA AR100 standard, with IEEE 56 as reference guide — Western OEM service without OEM lock-in.
Workshop capabilities
What we deliver on Stamford / Leroy-Somer
- Stamford HCI + PI series service within our 1 to 365 MVA range
- Leroy-Somer LSA + TAL series complete service capability
- MX341 + MX321 + SX440 AVR diagnosis and replacement
- Brushless excitation rotor coil + diode bridge service
- Stator winding rewind VPI Class F or H under EASA AR100
- Dielectric testing scope agreed for the equipment and project
- NFPA 110 Level 1 emergency generator commissioning hospitals + datacenters
- Annual mandatory testing for NFPA 110 compliance documentation
Applications
Industries we serve on Stamford / Leroy-Somer
Hospital NFPA 110 Level 1
Stamford + Leroy-Somer generators 0.5-5 MVA serving as Level 1 emergency power for Mexican hospitals (Hospital Civil, Hospital Mexicano, Hospital Médica Sur) requiring 10-second startup + 8-hour operation.
Datacenter Tier III + Tier IV
Backup generation 2-15 MVA per N+1 redundancy for datacenter facilities under Uptime Institute Tier requirements + Bicsi-002 design standards.
Commercial standby
Backup generation for commercial buildings, shopping centers, office complex emergency lighting + life-safety systems under NEC + IEC 60364-7-710.
Industrial emergency backup
Plant emergency generation under NFPA 110 + IEC 60364 in industrial facilities requiring continuity of critical processes.
Frequently asked questions
Do you service Stamford and Leroy-Somer as one OEM?
Yes — they share many technical platforms and are similar enough that service expertise transfers. Stamford = Cummins Generator Technologies (UK). Leroy-Somer = Nidec acquisition (France). Both share brushless excitation architecture + similar AVR platforms (MX341, SX440 in Stamford; LX341, R450 in Leroy-Somer). Service approach is identical for both OEMs. TEMISA Power Gen is independent of both — not authorized by Cummins/Stamford or Nidec/Leroy-Somer.
What's typical NFPA 110 Level 1 commissioning service?
NFPA 110 Level 1 commissioning for hospital emergency generators requires: (1) Insulation resistance Megger 5 kV under IEEE 43; (2) AC hipot at the voltage defined in the agreed test protocol; (3) Load testing at 100% rated capacity for minimum 2 hours; (4) Cold-start to full load < 10 seconds; (5) Sustained operation 8 hours documented under continuous load; (6) Switchover testing (manual + automatic); (7) Documentation package for NFPA 110 audit retention. Typical service: 2-3 days field. Annual recurring testing required for Level 1 hospital systems.
What Stamford and Leroy-Somer lines do you service?
Stamford: HCI series (3-15 MVA salient-pole), PI series (1.5-5 MVA), industrial generator-end packages mated with Cummins diesel engines. Leroy-Somer: LSA series (1-12 MVA, the workhorse line), TAL series (0.5-3 MVA), and Generator-Ende packages mated with various diesel engines (Caterpillar, John Deere, MTU). AVR platforms identical service approach: MX341 + MX321 + SX440 (Stamford) and LX341 + R450 (Leroy-Somer).
Do you handle the diesel engine side or only the generator?
We focus on the GENERATOR side (synchronous machine + AVR + brushless excitation + switchgear). For the prime-mover diesel engine (Cummins, Caterpillar, John Deere, MTU), we recommend coordinating with the engine OEM authorized dealer or a specialized diesel mechanic. We integrate our generator-side service with diesel engine maintenance scheduling for unified shutdown coordination.
Other OEMs we service
Multi-OEM coverage
Contact
Need service for your industrial generator or turbogenerator?
Response and quote timing confirmed after reviewing your request. Emergency support by arrangement across Mexico and Central America.
Quote requests
ventas@temisapowergen.mxDirect line
+52 33 3614 2460Shop hours
Monday to Friday 8:30–17:30 and Saturday 8:30–13:30 (closed Sunday)
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