AMF and synchronising panels · DG panels
AMF and DG synchronising panels
Starts your generators when the grid fails and hands the load back when it returns. AMF panels handle automatic changeover for a single DG; synchronising panels run several DG sets in parallel and share the load between them.
- Rating
- Up to 4000 A
- DG sets
- 1 to 8 in parallel
- Changeover
- Automatic
- Load sharing
- kW and kVAr
Overview
An AMF panel watches the mains supply. When it fails or goes out of limits, the controller starts the DG, waits for voltage and frequency to settle, and transfers the load. When mains returns and stays healthy, it transfers back and runs the DG down through a cooling cycle.
For sites that need more power or redundancy than one DG can give, synchronising panels match voltage, frequency and phase angle before closing each DG breaker onto a common bus, then share kW and kVAr between the sets. Load management can start and stop sets to match demand and shed non-critical loads.
Technical specifications
| Rated operational voltage | 415 V AC, 3-phase 4-wire, 50 Hz |
|---|---|
| Busbar current | Up to 4000 A |
| Short-time withstand current | Up to 50 kA for 1 s |
| AMF functions | Mains monitoring, auto start/stop, changeover, cool-down and retransfer timers |
| Synchronising | Auto-synchronising with check-sync relay, 2 to 8 DG sets |
| Load sharing | Active (kW) and reactive (kVAr) load sharing, load-dependent start/stop |
| Changeover device | Interlocked ACBs, MCCBs or motorised changeover switches |
| Generator protection | Reverse power, over/under voltage and frequency, over-current, earth fault |
| Controller | Microprocessor DG controller with display, event log and Modbus |
| Control supply | 24 V DC with battery charger |
| Enclosure | CRCA sheet steel, 2 mm structure and 1.6 mm doors |
| Degree of protection | IP42 or IP54 |
| Finish | Powder coat, RAL 7035 or your shade |
| Standards | IS 8623 |
What's inside
- DG incomers and mains incomer with electrical and mechanical interlocks
- AMF or synchronising controller for each DG
- Common bus with outgoing feeders to the PCC
- Check-synchronising relay and sync scope
- Battery charger and 24 V DC control supply
- Metering for each source and the common bus
Applications
- Hospitals and data centres
- Commercial towers and malls
- Hotels and residential societies
- Factories with DG backup
- Telecom and IT parks
- Water supply and pumping stations
Options
- Mains paralleling with closed-transition changeover
- Priority-based load shedding
- Remote monitoring over Modbus or Ethernet
- Neutral grounding and earth-fault relays
- Fuel and battery alarms
- Integration with PCC in a single lineup
Built and tested in-house
We cut, bend, weld and powder-coat the enclosures in our own workshop, then assemble and wire every panel to drawings you approve before fabrication starts. Before dispatch each panel goes through high-voltage, insulation resistance and functional tests, and your team is welcome to witness them.
Frequently asked questions
What does an AMF panel do?
AMF stands for automatic mains failure. The panel detects a mains failure, starts the DG, transfers the load once the DG is stable and transfers it back when mains is restored, with no one needed on site.
How many DG sets can be synchronised?
Our synchronising panels typically run 2 to 8 DG sets on a common bus, with automatic start and stop of sets based on load.
Can we synchronise DG sets of different ratings?
Yes. Load sharing is proportional to each set's rating, so a 500 kVA and a 1010 kVA set each carry the same percentage of their capacity.
Is the changeover open or closed transition?
Standard AMF changeover is open transition, with a short break during transfer. Closed transition, where DG and mains briefly run in parallel, is available where your utility permits it.
Other panels in the range
Need an AMF or synchronising panel?
Share your single-line diagram, load list or specification and we'll come back with a GA drawing, a bill of materials and a price. Most enquiries get a first response within two working days.
- sales@indway.in
- Phone
- +91 98705 97616