Product Short Description
Product Name: SPM‑D2‑11 Microprocessor‑based Synchronizer & Load‑Share Controller
Product Overview:
A dedicated digital signal processor that automatically matches a generator’s voltage, frequency, and phase angle to a live bus or another running genset, then closes the breaker with zero phase‑difference. It additionally performs kW and kVAr load sharing and generator protection.
Description
Technical Specifications:
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Parameter
|
Specification
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|---|---|
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Power Supply
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12/24 V DC (9.5 – 32 V DC), max consumption < 8 W
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Voltage Sensing
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Two‑phase True RMS, Class I accuracy
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Voltage Ranges
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63/110 V AC or 230/400 V AC (surge 2.5 – 4.0 kV)
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CT Input
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…/5 A (or …/1 A) for load measurement
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Analog I/O
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Configurable 0/4‑20 mA; Governor ±10 V / ±20 mA; AVR ±10 V / ±20 mA bias
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Discrete I/O
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Multiple 12/24 V DC discrete inputs; relay driver outputs
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Communication
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CANopen, RS‑485, USB (Toolkit PC config)
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Sync Modes
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Phase‑match (zero phase diff), slip‑frequency, voltage matching
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Display
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Two‑line LCD
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Front Protection
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IP66
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Operating Temp.
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‑20 °C to +70 °C
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Protection Functions
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Over/under voltage, over/under frequency, overload, reverse current, soft unload
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Housing
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Flush‑mount APRANORM DIN 43 700, 144 × 72 × 122 mm, ≈ 800 g
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|
Listings
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CE, UL/cUL, RoHS2
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Functional Features:
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True RMS Microprocessor Core – Resists harmonic distortion from modern VFDs.
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Dual Analog Load‑Share Lines – Simultaneous kW (real power) and kVAr (reactive power) sharing.
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Breaker Time Compensation – Adjusts the close command for breaker mechanical delay.
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Configurable Control Outputs – Discrete raise/lower for speed & voltage, or analog (voltage, current, PWM) bias.
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Generator Protection – One‑phase CT sensing for power, overload, voltage, frequency.
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Password‑Protected Parameter Set – Multi‑level security, USB configuration via Woodward ToolKit™.
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Built‑in Synchronoscope – Front‑face indicator for commissioning.
Application Scenarios: Island‑mode paralleling of diesel/gas gensets, data‑center backup power, mining camp microgrids, retrofit of obsolete mechanical synchronoscopes, utility‑paralleled generation.
Working Principle: Continuously computes True RMS voltage and frequency of both generator and bus, calculates phase angle error, and sends precise raise/lower bias to the engine governor and AVR until phase, frequency, and voltage match within tolerance; then issues a bumpless breaker‑close command.
Installation Requirements: Panel‑cutout 138 × 68 mm; proper sealing gasket (P/N 8923‑1037) for IP54 front; separate grounding of CT secondary; keep voltage sense wiring away from noisy loads.
Usage Notes: Always verify sync‑check timer before auto‑close; do not operate without correctly rated CT; USB configuration must be performed with the unit de‑energized from the bus side.
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