NewOn/off-grid transfer cabinet

PULSEP500 · P1000 · P2000

The grid drops. The load never notices. · 0.5 – 2 MW · 400 V AC · static transfer in ≤ 10 ms

The AMPROTEQ PULSE P1000 transfer cabinet, a two-door outdoor enclosure with an emergency stop, status lamps and a louvred intake on the left door and the AMPROTEQ badge on the right, in a dark studio
≤ 10msTransfer timeHalf a 50 Hz cycle
0.5–2MWRated powerThree frames
400V ACMicrogrid bus3W + N + PE · 50/60 Hz
6portsSwitched+ manual bypass
IP55OutdoorIP21 indoor
Backup power without the blackout

Every source.
One switch.

PULSE sits between the supply and your site. Grid and genset come in ahead of a thyristor static switch; the load, the battery and the solar sit on the bus behind it. When the grid fails, the switch opens in under half a cycle and the battery takes over the voltage. Sensitive loads ride through instead of resetting, and the site carries on on battery and sun.

Download the datasheet · PDF, 2.4 MB Trip the grid ↓
01Sources2in

Grid on QF3 and a genset on QF4, metered, ahead of the switch.

02Static switch≤ 10ms

Anti-parallel thyristors in 600 kW modules open the grid.

03Microgrid bus400V

Copper A · B · C · N behind the switch, 3W + N + PE.

04Ports4out

Load, battery PCS and two PV feeders stay together on the island.

01 · Half a cycle

Pull the plug.
Watch the load.

At 50 Hz one cycle lasts 20 ms. PULSE hands the bus to the battery inside half of one. Run the fault and compare it with what most sites have today: a genset behind a changeover switch.

GridYour load
Load without voltage0ms
Who holds the voltage after—
What the site sees—

Illustrative waveforms, one phase at 50 Hz. PULSE times are the rated maximum per frame. The genset case is typical for a standby set: engine start plus changeover, about 10 s. The 20 ms marker is the zero-voltage ride-through on the ITIC curve that IT power supplies are designed to.

02 · Anatomy · P1000-O

Open the doors.

One cabinet carries the static switch, a breaker for every port, the metering and the surge protection. Front access, cables from below. Scroll to open · drag to turn

  1. Static-switch modulesTwo 600 kW thyristor drawers · ≤ 10 ms
  2. Main busbarA · B · C · N in copper, behind a clear shroud
  3. Source & load breakersQF3 grid · QF4 genset · QF1 load
  4. Port breakersQF5 battery PCS · QF6 PV · QF7 PV 2
  5. Port meteringCTs on grid, genset, load, PV 1 and PV 2
  6. Controller & surgeTransfer logic · SPD on the load bus with MCB
  7. Maintenance bypassQF2 feeds the load straight from the grid
  8. Bottom cable entryGland plate · 3W + N + PE
The PULSE P1000 with both doors open: two static-switch drawers and the controller on the left, six moulded-case breakers on the right, copper busbars across the top and the yellow bypass switch low on the left
Visualisation
  1. Static-switch modules2 × 600 kW drawers
  2. Main busbarA · B · C · N, copper
  3. Source & load breakersQF3 · QF4 · QF1
  4. Port breakersQF5 · QF6 · QF7
  5. Port meteringCTs on every port
  6. Controller & surgeTransfer logic, SPD + MCB
  7. Maintenance bypassQF2, grid to load
  8. Bottom cable entryGland plate
1 600 × 1 000 × 2 100 mm≈ 650 kgIP55 outdoorVisualisation · typical arrangement
03 · How it switches

Four modes.
One bus.

PULSE reads the grid, the genset and the load side at once: voltage, frequency, phase angle and harmonics. It moves the bus between sources and decides who sets the voltage. Pick a mode, or let it run.

Mode 01

On grid

Switch closed. The grid sets the voltage; the battery shaves peaks and the solar feeds the bus.

Sets the voltage
Grid
Static switch
Closed
Battery
Dispatch · peak shaving
Load
On

Simplified single-line, P500 · P1000. The P2000 has the same ports and single-line with frame breakers in place of the thyristor block. Dashed ring: the source that sets the voltage.

04 · Back on grid

Closes back
in phase.

When the grid returns, PULSE does not slam it back in. The battery PCS steers the island onto the grid's voltage, frequency and phase angle, and the switch closes only when the two sides match. The load is not hit twice.

  1. 01Grid returnsand holds inside limits
  2. 02SynchronisePCS steers V, f and phase
  3. 03Closewith the two sides matched
  4. 04Hand backgrid sets V, battery to dispatch
Synchroscope
ΔV—
Δf—
Δφ—
SwitchOpen
GridIsland (battery PCS)Illustrative
Why the load stays on

Five design decisions.

  1. 01

    Half a cycle

    Static switching moves the bus in ≤ 10 ms, half a 50 Hz cycle. Critical loads ride through.

  2. 02

    Acts before the outage

    Watches voltage, frequency and harmonics, and starts the transfer as the grid degrades, not after it is gone.

  3. 03

    One cabinet, MW scale

    Up to 2 MW through a single cabinet. One controller, one interlock chain, no stack of panels to coordinate.

  4. 04

    Grid, genset, sun, storage

    Two sources ahead of the switch; load, battery and PV behind it, metered port by port.

  5. 05

    Bypass for service

    A manual bypass feeds the load straight from the grid while the cabinet is isolated and worked on.

05 · In the plant

A grid-tied battery in.
Backup power out.

Put one PULSE between the supply and an A2000, and the site keeps running through an outage: battery and sun first, the genset when it is needed. The frame follows the battery power at the bus.

Battery at the bus
Installed
Your frameP1000Thyristor static switch
1 000kWRated · 1 100 kW max
≤ 10msTransfer
2MWPV max, both ports
1 443ARated current
1 600 × 1 000 × 2 100 mm≈ 650 kgIP55

Frame rating covers the PCS and the load at the bus. PV max uses both PV ports. Pairing shown for A2000 systems; other batteries are sized per project.

The PULSE cabinet from the right, showing the side ventilation hood, in a dark studio
Operating envelope
Ambient
−35 °C45+50 °C
Full power to 45 °C, derated to 50 °C
Altitude
03 000 m
Derating above 3 000 m
Humidity
095 %
Non-condensing
Specification

PULSE · three frames

Typical configuration. Final values are fixed in the project technical agreement.

ParameterP500P1000P2000
Power
Rated power500 kW1 000 kW2 000 kW
Maximum power550 kW1 100 kW2 200 kW
Rated current722 A1 443 A2 887 A
Maximum current792 A1 584 A3 175 A
PCS port, rated500 kW1 000 kW2 000 kW
Load port, rated500 kW1 000 kW2 000 kW
PV, single / dual port0.5 / 1 MW1 / 2 MW2 / 4 MW
Transfer
Switching deviceThyristor static switchFrame breaker
Transfer time≤ 10 ms≤ 20 ms
STS module600 kW · up to 99 %—
SensingV, f, phase angle on grid, genset and load
Early triggerGrid voltage, frequency and harmonics
Operating modesOn-grid · island · genset · bypass
Mains ↔ gensetAutomatic change-over
Electrical
Voltage400 V AC · 3W + N + PE
Frequency50 / 60 Hz
Protection classI (earthed)
Surge protectionSPD on the load bus, with MCB
MeteringCTs on grid, genset, load, PV 1, PV 2
Enclosure & environment
Ingress protectionIP21 indoor · IP55 outdoor
W × D, indoor1 500 × 900 mm1 600 × 900 mm
W × D, outdoor1 600 × 1 000 mm1 800 × 1 000 mm
Height2 100 mm
Weight, indoor / outdoor≈ 600 / 650 kg≈ 700 / 750 kg
Ambient−35 … +50 °C, derating above 45 °C
Relative humidity0 – 95 %, non-condensing
Altitude3 000 m, derating above
Control
InterfacesRS-485 · CAN · Ethernet
Master controlIntegrated · PV, storage, genset
Energy managementSolaris™ EMS
Signals in · dry contacts
Switch positions
Grid · genset · load
Switch positions
PV · battery · bypass
External EPO
N/O
EMS fault
N/C, opens
Transformer over-temperature
N/C
Battery fault
N/C
Signals out · comms
PCS AC / DC trip
DO · 230 V 1 A
Transformer pre-charge
DO
EMS link
RS-485 · CAN
Plant network
Ethernet
Module paralleling
CAN bus
Current sensing
CT per phase
Per port · P1000 at 400 V
Grid · QF3
1 000 kW · 1 443 A
Genset · QF4
Per project
Load · QF1
1 000 kW
Battery PCS · QF5
1 000 kW
PV 1 · QF6 / PV 2 · QF7
1 000 kW each
Bypass · QF2
Sized to the load
Certificates
EN 62310 · STS moduleCE · LVDRoHSREACH

EN 62310 and CE LVD cover the static-switch module. Grid-code approvals such as NRS 097-2-1 sit with the converter PULSE pairs with, not with the cabinet.

Scope of supply: cabinet, transfer devices, QF1–QF7, CTs, SPD and controller, factory-integrated and tested before dispatch. Cabling, plinth and upstream protection per project. Model code: P1000-O · P for PULSE · rated kW · O outdoor or I indoor. P500 and P1000 switch statically; P2000 uses frame breakers.

Size your transfer.Send the single-line, the critical load and the genset you have. We return the frame, the port plan and the switching study.
Datasheet · PDF Request a switching study
  1. 01Site single-line and point of supply
  2. 02Critical loads and their ride-through need
  3. 03Genset size, if there is one
  4. 04PV on site, kW
  5. 0512 months of interval data
AC integrated systemsThe A2000 behind it.2 MWh of liquid-cooled LFP with the PCS inside, at 500 kW or 1 MW. With a PULSE ahead of it, a grid-tied battery becomes backup power.Battery storage → Solaris™ EMSThe controller above it.Solaris reads the switch over RS-485, CAN or Ethernet, plans the battery around outages and keeps a reserve for the next one.Solaris EMS → Power convertersThe converter that forms the island.Grid-forming PCS modules hold the voltage the moment the switch opens. Their grid-code certificates are listed on the converter page.Power converters →