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STAMFORD
STAMFORD, branded STAMFORD | AvK, is the alternator maker of Cummins Generator Technologies, building brushless AC alternators and automatic voltage regulators from 7.5 to 11,200 kVA. Its heritage runs back to 1904, when the Cutting Brothers started an electrical engineering business in Stamford, England. Seven Star LLC, an independent supplier in Muscat, sources these alternators and regulators for generator builders and plant owners in Oman and the GCC.
Read more about STAMFORD 
Brand profile
About STAMFORD
- Founded
- 1904
- Headquarters
- Peterborough, England
- Speciality
- Brushless alternators and avrs
- Listed with us
- 1 product
STAMFORD products by category
STAMFORD, branded STAMFORD | AvK, is the alternator maker of Cummins Generator Technologies, building brushless AC alternators and automatic voltage regulators from 7.5 to 11,200 kVA. Its heritage runs back to 1904, when the Cutting Brothers started an electrical engineering business in Stamford, England. Seven Star LLC, an independent supplier in Muscat, sources these alternators and regulators for generator builders and plant owners in Oman and the GCC.
Alternators and AVRs listed here
The pages cover the S-Range alternators S0, S1, S4, S5, S6, S7K and S9LV, the UC22 and UC27 frames, and the AS480, MX321, MX341, MX342, SX460 and DM110 voltage regulators. Each page carries the ratings and specification from the maker brochure, datasheet or owner manual, including options as printed.
Where these alternators are used
The maker names data centres, marine, telecoms, standby and critical protection, combined heat and power, rail and prime power as typical applications, on diesel and gas engines. In the Gulf these are the same standby and prime-power sets used on camps, plants and pumping stations.
Ordering parts and alternators: what we need
For an alternator, send the model, serial number, winding number, kVA, voltage and frequency from the nameplate. For a regulator, send the code printed on the existing board and the alternator model, because the right replacement depends on the excitation system.
Request a Quote for STAMFORD Products
Looking for STAMFORD parts not listed here, or pricing for a project? Send us the part numbers and quantities. Seven Star LLC sources genuine STAMFORD products for customers across Oman and the GCC and replies with a formal quotation.
- Genuine OEM products
- Supply across Oman & the GCC
- Formal quotation from our sales team
Free, no-obligation quotation · takes about 1 minute
Other enquiries: [email protected] · WhatsApp
Frequently Asked Questions
What does STAMFORD make?
STAMFORD makes brushless AC alternators from 7.5 to 11,200 kVA and automatic voltage regulators, under the STAMFORD and AvK brands of Cummins Generator Technologies.
Which engines can STAMFORD alternators be fitted to?
The maker states that its alternators suit all major engines and prime movers, including diesel and gas engines; the SAE adaptor must match the engine flywheel housing.
Which AVR do I need for a replacement?
The one named on the alternator wiring diagram and printed on the existing board, for example AS440, MX321, MX341 or SX460; the excitation system decides the type.
What details should an enquiry include?
Alternator model and serial number, winding number, kVA, voltage, frequency, engine model with SAE housing and duty, or the AVR code for a regulator.
Is Seven Star LLC a distributor of STAMFORD?
No. Seven Star LLC is an independent supplier in Muscat that sources genuine STAMFORD products for customers in Oman and the GCC, and does not hold a distribution agreement with STAMFORD.