The DEIF CSQ-2 is a high-precision microprocessor-based synchroscope designed for the manual and semi-automatic synchronization of generators. This unit provides a clear, visual representation of the phase frequency and phase angle relationship between two power systems, ensuring a safe and seamless connection when paralleling generators to a busbar. Known for its reliability in marine environments, the CSQ-2 features a circular LED display that mimics the movement of a traditional pointer for intuitive operation.

 

Technical Datasheet

• Product Name: DEIF CSQ-2 Synchroscope
• Model Keyword: DEIF CSQ-2
• Voltage Range: 100V to 450V AC (Model dependent)
• Frequency Range: 45Hz to 65Hz
• Power Consumption: Max 2VA
• Dimensions: 96mm x 96mm x 82mm
• Weight: 0.42 kg
• Country of Origin: Denmark
• Enclosure Rating: IP52 (Front), IP20 (Terminals)
• Operating Temperature: -25°C to +70°C

 

Application Areas

The CSQ-2 is a staple in power management systems where manual synchronization is required. Common applications include:

• Marine Power Systems: Synchronizing shipboard diesel generators to the main switchboard.
• Emergency Standby Power: Managing synchronization for hospitals or data centers during power transitions.
• Cogeneration Plants: Coordinating local power generation with the utility grid.
• Mobile Power Units: Reliable phase matching for portable industrial generators.

 

Operating Instructions

1. Installation: Fit the device into a 92mm x 92mm square panel cutout. Secure it using the provided mounting clamps to ensure it remains stable under vibration.
2. Wiring Connection: Connect the “BUSBAR” voltage leads and the “GEN” (Generator) voltage leads to the appropriate rear terminals. Always check the wiring diagram for the specific voltage variant (L1-L2 or L1-N).
3. Synchronization Process: Adjust the generator speed (frequency) until the LED circle starts rotating slowly. A clockwise rotation indicates the generator is faster than the busbar; counter-clockwise indicates it is slower.
4. Closing the Breaker: Once the frequency is matched and the top red LED (12 o’clock position) is lit—indicating a 0° phase angle—the breaker can be safely closed.
5. Status Check: Ensure the “SYNK” LED is illuminated, confirming the phase sequence is correct. The device will stay dark if the phase sequence is reversed.

Q&A: Frequently Asked Questions

What does it mean if the LEDs are rotating counter-clockwise? This indicates that the incoming generator frequency is lower than the busbar frequency. You must increase the generator speed until the rotation slows down and eventually moves toward the 12 o’clock position.

Can the CSQ-2 be used in high-temperature environments? Yes, the CSQ-2 is designed for harsh industrial environments, with an operating temperature range up to +70°C, making it suitable for engine rooms and hot climates.

Does the unit require a separate power supply? No, the CSQ-2 is self-powered from the measuring AC voltage inputs (Busbar and Generator), simplifying the installation and reducing wiring complexity.

How do I know if the phase sequence is wrong? If the phase sequence of the generator does not match the busbar, the LED circle will not rotate. Instead, the specific “Phase Error” or “Sequence” indication logic within the CSQ series will prevent the sync light from appearing, signaling that the wiring must be checked.

 

Similar Model Recommendations

• DEIF HAS-111 (Check Synchronizer)
• DEIF USQ-3 (Universal Synchroscope)
• DEIF FAS-115 (Automatic Synchronizer)
• Woodward SPM-D10
• Crompton Instruments 256-PLL Synchroscope