About the SPM
The SPM Synchronous Motor Protection & Control's SPM product is named as such as it is the base model available for this particular product series. The primary intended function of this basic SPM device involves the start-up, synchronization, and protection functions for both collector-ring and brushless styles of synchronous motor units. To be more specific, some of the protection options offered by the base SPM unit will include:
- Cage winding (start-up)
- Stall prevention (start-up)
- DC field current trip loss protection
- Auto resynchronization
- A Lockout feature for incomplete starts
- Am incomplete sequence tripping
- Programmed acceleration time adjustment
- Overtemperature protections
SPM Hardware
While this standard starting and protection relay may be just that, missing some of the bells and whistles of revised SPM Series offerings, it is still a robust product encased in a quality chassis. Some of the hardware elements critical to its function include its:
- Optional power factor regulator
- Five adjustable setpoints
- Backlit LCD display
- Keypad interface
- S1 drawout case (compact)
It should be noted that this SPM Standard Starting and Protection Relay is available here today from AX on both a repair and replacement basis; as this SPM Standard Starting and Protection Relay is a legacy product offering not currently being manufactured.