Mechanical Characteristics of Stamford Generator
Electrical characteristics of the Stamford generator
(Cummins generator)
Insulation and dipping: The insulation rating is “H”. All wound parts are specially developed and coated with a special process to provide protection for the generator in harsh environments. Specially developed resin-based materials provide high processing strength and high mechanical strength for coils and rotating parts.
Winding and electrical performance: all generator
winding is 2/3 pitch winding, which effectively eliminates the third and third multiple harmonics of the voltage (3rd, 9th, 15.), It is the best design of non-linear load such as uninterruptible power supply equipment. In parallel with the grid, the 2/3 pitch structure suppresses the sometimes large mid-line current generated by the larger coil pitch. A fully continuous damping winding reduces the oscillation of the generator in parallel operation. This 2/3 pitch, and a carefully selected winding match between the poles and teeth, suppresses the waveform distortion of the output voltage.
Overload capacity: Stamford Land Generator can overload 110% every 12 hours for 1 hour.
Telephone interference: THF (, as defined by BS EN60034-1, is less than 2%.TIF (as defined by NEMA Mgl-22) less than 50.
Radio interference: brushless devices and high-quality AVR ensure that the radio transmission interference is minimal to meet the requirements of the BSEN61000-6 standard. An additional radio interference suppressor, (RFI)., can be provided if necessary Terminal and junction box: the standard generator is three-phase and can reconnect 12 wiring heads leading to the terminal, which is mounted on the output board of the non-drive end of the generator. The outline box made of chipplate has AVR, and enough space for the user to wire it. For ease of operation, the panel is a removable panel.
Mechanical Properties
Air filter: as optional, air filter can be installed on generator, but the rating is reduced by 5%. It is recommended that all motors equipped with air filters be equipped with stator winding high temperature alarm devices.
Shafts and keys: all generator rotors are dynamically balanced and the checked vibration is lower than the minimum specified in stage 25 of part 1 of BS6861. Double fulcrum generator with half key to adjust dynamic balance.
Filter sleeve and coupling: generators have both single fulcrum and double fulcrum structures. Bushing and disc couplings meet SAE standards and can be matched with all diesel engines with SAE standard interfaces.
Protection level: all Stamford generators meet the IP23 standard as an optional generator that can provide IP44 air-cooled protection to customers, but it is recommended that all IP44 generators be equipped with stator winding high temperature alarm devices.
Altitude and ambient temperature: the rated power of all Stamford land generators refers to power not exceeding 1000 meters above sea level and less than 400 C in ambient temperature. If the altitude is more than 1000 meters, for each elevation of 500 m, the power will drop by 3 meters; if the altitude is above 4000 meters, please consult the factory. When the ambient temperature is over 40 ℃, for every 5 ℃ increase, the motor power is reduced by 3%. When the ambient temperature exceeds 600 C, please contact the factory and consult.
