DG Set Panel
POLARIS DG Set Panels are purpose-built control panels for monitoring, protecting, and managing diesel generator operations to ensure reliable backup power supply during mains power failures. These panels provide comprehensive generator control including start/stop interlocking, auto changeover from mains to DG power, generator protection relay integration, and manual override for maintenance. POLARIS DG Set Panels are equipped with AMF (Automatic Mains Failure) controllers, digital meters for voltage, current, frequency, and power monitoring, protection relays for overcurrent, over-speed, low oil pressure, and high coolant temperature, along with bus coupler arrangements for synchronisation. The panels support both manual and automatic operating modes and are designed for industrial facilities, hospitals, commercial buildings, and infrastructure projects requiring uninterrupted power supply.
Key Features
- Automatic Mains Failure (AMF) control for automatic generator start on mains failure.
- Auto changeover from mains to DG and back with adjustable time delays.
- Digital meters for voltage, current, frequency, power factor, and energy monitoring.
- Generator protection relays for overcurrent, overvoltage, under-frequency, reverse power, and earth fault.
- Engine protection interlocks for low oil pressure, high coolant temperature, and over-speed.
- Manual, automatic, and test mode selector for operational flexibility.
- Bus coupler and synchronisation panel for parallel DG set operation where required.
- Indication lamps and audio-visual alarms for fault conditions and operational status.
- Motorised changeover switch or ACB bus coupler for safe mains/DG power transition.
- Designed per IS 10118, IEC 60947 standards and generator OEM requirements.
Frequently Asked Questions
What is an AMF Panel and how does it differ from a DG Set Panel?
An AMF (Automatic Mains Failure) Panel is a control panel that automatically starts the diesel generator when mains power fails and switches the load back to mains when power is restored. POLARIS DG Set Panels incorporate AMF controllers along with generator protection, metering, and bus changeover systems in a single enclosure.
What protection functions are included in a POLARIS DG Set Panel?
POLARIS DG Set Panels include electrical protections such as overcurrent, short-circuit, overvoltage, undervoltage, under-frequency, reverse power, and earth fault, along with engine protection interlocks for low oil pressure, high coolant temperature, and over-speed conditions.
Can POLARIS DG Set Panels support parallel operation of multiple generators?
Yes. POLARIS designs synchronisation and load-sharing panels for parallel operation of multiple DG sets. These systems include synchroscopes, synchronising relays, and load-sharing controllers to ensure stable parallel operation and optimal load distribution.
What is the time delay between mains failure and generator power supply?
The changeover time can be adjusted in the AMF controller as per site requirements. Typically, the DG set starts within 10-30 seconds of mains failure and load is transferred after the generator reaches stable voltage and frequency. POLARIS configures these timers during factory testing and on-site commissioning.
Are POLARIS DG Set Panels compatible with all generator brands?
Yes. POLARIS DG Set Panels are designed to interface with generators from all major brands including Cummins, Kirloskar, Mahindra, Caterpillar, and Perkins. Panel controls and protection settings are configured as per the generator OEM's recommended parameters.