To ensure the consistent operation and long-term lifespan of your alternator it is essential you buy genuine.
Buying a genuine STAMFORD® | AvK® ensures:
- Don’t lose the validity of the alternator warranty;
- Minimised risk of plant and equipment failure;
- Maximised power supply security;
- Matched performance capability to alternator ensuring stability and responsiveness;
- A product that is tested to react in emergencies, triggering support existing protection systems.
Spare parts have a 12 month warranty.
The AVR is the heart of the alternator and keeps the static output voltage within very small limits during operation.
Diodes and Varistors
Diodes convert the alternating current generated by the exciter rotor into direct current for the main rotor.
The Varistors, connected between the positive and negative poles, perform the function of protection against transient overvoltages caused by faults or external anomalies.
The exciter rotor is one of the two components of an AC generator and is part of the excitation circuit of alternators, it produces by induction a three-phase alternating voltage as it rotates on the main rotor shaft, inside the exciter stator.
Permanent magnet generator
The permanent magnet generator is an auxiliary component used to provide independent power to the AVR.
The purpose of using the anti-condensation heater is to raise the temperature above that of the dew point inside a stationary alternator.
Thermistors (RTD) and Transformers (CT)
Thermistors and resistance temperature detectors are devices used to detect the abnormal overheating of one or more components.
The CT Droop current transformer (CT) is required when a generator must operate in parallel with other generators or with the grid.
Coupling and Adaptor
Single bearing alternators (constructed with a single bearing) are coupled to the engine via a series of discs connected to the engine flywheel. The coupling adaptor allows alignment and rigid coupling between the static engine and alternator components.
In dual bearing alternators (built with two or more bearings) a coupling adaptor housing must be installed between the engine and alternator for proper alignment and rigid coupling of the components.
The bearings allow rotation as they are the point of contact between the fixed casing of the generator and the mobile rotor.
The excitation stator is powered by a DC voltage from the AVR voltage regulator. The direct voltage generates a magnetic field which strikes the turns of the windings of the excitation rotor.