- Automatic Mains Failure (AMF) or Automatic Transfer Switch (ATS) panels
AMF Panels - Main features
The Automatic Mains Failure ("AMF") panels control the operating parameters of the electric grid and, upon the occurrence of a fault or a power failure, they automatically start the emergency generator by transferring load on the electric power generated by the generator itself, then they restore the normal operating mode once the fault has been removed.
| General features |
Iron sheet box or cabinet, powder coated colour RAL 7035, thickness 20/10. IP protection degree 42. Four-pole transfer switch, with mechanical and electric interlock. LCD graphic display. Push buttons to choose Automatic or Manual running mode. Voltage range: 12-24 VDC. Automatic battery charger. |
| Measurements inputs |
Mains voltage: L-L, L-N. Gen-set voltages: L-L-, L-N. Voltage frequency. Gen-set line currents. Power measurements: kVA, kW, kvar, power factor. Running hour meter. Battery voltage. Coolant temperature. Oil pressure. Fuel level. TRMS Measurements accuracy. |
| Alarms and signalizations |
Low oil pressure. Dynamo. High coolant temperature. Low water level. Fuel lack. Generator overload. Min/Max voltage. Min/Max frequency. Min/Max battery voltage. Time to next maintenance intervention. |
| I/O configuration | Nr. 3 A.I. for resistie probes (oil press., water temp., fuel level). Nr. 7+1 programmable D.I. + emergency push button. Nr. 6 D.O. with positive output. |
| Communication | Can Bus SAE J1939. |
- Available sizes from 25 A to 2500 A (suitable for 15 kVA to 1500 kVA gensets).
ATS Panels - Mains features
The Automatic Transfer Switch ("ATS") panels control the operating parameters of the electric grid and, upon the occurrence of a fault or a power failure, they send the starting command to the emergency generator, after that they transfer load on the electric power generated by the generator itself and restore the normal operating mode once the fault has been removed, by stopping the generator too.
On the contrary of the AMF ones, the ATS panels are not predisposed to manage the genset running operations (apart from start and stop commands), therefore the genset has to be equipped with its own controller.
| General features |
Iron sheet box or cabinet, powder coated colour RAL 7035, thickness 20/10. IP protection degree 42. Four-pole transfer switch, with mechanical and electric interlock. LCD graphic display. Push buttons to choose Automatic or Manual running mode. Voltage range: 12-24 VDC. |
| Measurements inputs |
Line #1 voltage: L-L, L-N. Line #2 voltage: L-L, L-N. TRMS Measurements accuracy. |
| Controls |
Min/Max voltage. Min/Max frequency. Phase loss. Asymmetry. Control of three-phase, two-phase or single phase systems. Voltage thresholds with programmable hysteresis. Programmable enabling time delay. |
| I/O configuration |
Nr.6 programmable D.I. Nr. 6 D.O. with NO contacts - 8 A, 250 VAC Nr. 1 D.O., changeover contact - 8 A, 250 VAC |
| Control |
Motorized circuit breakers. Motorized changeover switches. Contactors. |
- Available sizes from 25 A to 2500 A (suitable for 15 kVA to 1500 kVA gensets).
-
Automatic Synchronizing panels
The automatic synchronization panels predispose one or more generating sets to operate in parallel among them and / or in parallel with electric grid.
Some common application are the following:
-
Single generator in emergency, temporary parallel with mains.
- Single generator in parallel with mains, with constant power taken from generator.
- Single generator in parallel with mains, load peaks supplied by generator ("peak shaving") , power taken from mains limited to a constant value and genset start/stop depending on load demand.
- Multiple generators running in island mode on power bus.
- Multiple generators in parallel on power bus, in AMF emergency with mains.
Automatic synchronizing panels - Main features
| General features |
Iron sheet floor cabinet, powder coated colour RAL 7035, thickness 20/10. IP protection degree 54. Electronic digtal genset controller. LCD graphic display. |
| Protections |
27, 59 (Min/Max generator voltage). 81 (Min/Max generator frequency). Overload. Short circuit. Reverse power. Voltage asymmetry. |
| Measurements |
Voltage, current and frequency on all phases.
kVA, kW, kvar, KWh, power factor Running hour meter. Battery voltage. Coolant temperature. Oil pressure. |
| Operating function modes |
Automatic synchronizing. Active load sharing. On load demand. Parallel between generators in island mode. AMF. Automatic start, from external command or on load demand. |
|
Command
|
Motorized circuit breakers. Contactors. |
| Alarms and signalizations |
Low oil pressure. Dynamo. High coolant temperature. Water level. Oil level. Fuel lack. Starting failed. Engine stopping failure. |
- Available sizes from 160 A to 2500 A (suitable for 100 kVA to 1500 kVA gensets).