Multi-OEM service · Stamford / Leroy-Somer
Stamford / Leroy-Somer Generator Service
Independent multi-OEM workshop for Stamford + Leroy-Somer synchronous generators 0.5-15 MVA. HCI / PI / LSA series. MX341 / MX321 / SX440 AVR diagnosis. Standby + emergency generation specialty. CFE LAPEM W4200-12. 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 + IEEE 56 + EASA AR100 standards — Western OEM service without OEM lock-in.
Workshop capabilities
What we deliver on Stamford / Leroy-Somer
- Stamford HCI + PI series complete service capability 0.5-15 MVA
- 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 package CFE LAPEM W4200-12
- 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) Hipot AC at 1.5×Un under IEEE 95; (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 within 24 hours. Formal quote within 48 hours. 24/7 emergency support across Mexico and Central America.
Direct line
+52 33 3614 2460Quote requests
ventas@temisapowergen.mxService hours
24/7 emergency support
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Tell us what you need
Our 4-step quote form captures the essentials: service type, equipment, capacity and contact. Response in less than 24 hours, formal quote within 48.
CFE LAPEM W4200-12 · ISO 9001:2015 · IEEE / IEC