The SPM-D21 Series consists of microprocessor-based synchronizers designed for use on three-phase AC generators equipped with Woodward or other compatible speed controls and automatic voltage regulators. Drake Controls supplies, configures, and services the SPM-D21 Series as a Woodward Authorized Distributor.
Product Status
Not preferred for new design. Contact Drake Controls for product-status information. For similar current products, ask us about the easYgen-2000 series. Product-related technical documentation is still available on request — contact us to search for “SPM-D21”.
Description
The SPM-D21 Series provides automatic frequency, phase and voltage matching using either analog or discrete output signals. It combines synchronizing for a GCB (generator circuit breaker) and a MCB (mains circuit breaker), load and power factor control, and generator and mains protection.