APPLICATIONS

The SPM–D11 is a microprocessor-based synchronizer designed for use on one or three-phase AC generators
equipped with Woodward or other compatible speed controls and automatic voltage regulators. The SPM–D11
synchronizer provides automatic frequency, phase and voltage matching using either analog- or discrete output
bias signals.
It combines synchronizing for one circuit breaker, load and power factor control or isochronous load sharing and generator protection.

DESCRIPTION
Synchronizing

• Phase match or slip frequency synchronization with voltage matching
• Two-phase sensing of generator and bus
• Selectable operating modes like SPM-A (Run, Check, Permissive, and OFF)
• Synchro-check possible
• Synchronization time monitoring
• Load/var sharing

Mains parallel operation

• Real power control
• True RMS power calculation
• Generator real power setpoint by parameter (2 values) or via 0/4 to 20 mA
• Soft unloading
• Power factor control
• Power factor setpoint by parameter
• Power limit value with relay output

Isolated operation

• Frequency control
• Voltage control Dead bus operation
• Closing of breaker on demand

8440-1706B

DESCRIPTION
Protection ANSI #

• Single-phase CT sensing for generator
• Two-phase sensing of generator voltage
• Generator over-/undervoltage (59/27)
• Generator over-/underfrequency (81O/U)
• Generator reverse/reduced power (32R/F)
• Generator overload (32)

Control outputs
Standard

• Discrete raise/lower for speed/load
• Discrete raise/lower for voltage/power factor X package
• Analog bias outputs for voltage and speed freely configurable for all levels (+/-1 V, +/-
3 V, 0 to 5 V, 0.5 to 4.5 V, +/-10 V +/-5 V, 0 to 20 mA, +/-20 mA, and much more configurable)
• Speed bias output configurable as 500 Hz PWM output and adjustable voltage level
• Two raise/lower outputs configurable for either speed or voltage

Operating Features

• Two-line Liquid Crystal display for operation and alarm indication
• Synchroscope
• Indication of control activity and breaker state
• Multi-level password protection for parameters
• Configuration directly or via PC
• English or German language adjustable