ECsync

Add-ons · Accessory

ECsync

Seamless transfer cabinet for BESS on-grid/off-grid operation

Plug & play accessory for safe, automatic grid-to-island switching in battery energy storage systems

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Overview

ECsync

ECsync Control

ECsync Control is the ENcombi plug and play cabinet for providing seamless transfer, by the means of an external breaker, between on-grid and off-grid operation in BESS applications where the BESS itself does not feature seamless transfer by means of STS or otherwise.

The ECsync Control cabinet's main component is a synchronization relay. The ECsync Control is to be used in conjunction with an external mechanical grid breaker that shall be under control of the ECsync Control cabinet. The ENcombi EMS, ECpvX/ECcubeX, can communicate with and control the synchronization relay.

EMS Requirement: ECsync Control requires an ENcombi EMS to operate. The following ECpvX variants are available:

  • ECpvX Logger: Logs data from utility, gensets and PV inverters.
  • ECpvX Solar: Power Plant Control for solar and BESS.
  • ECpvX S: Microgrid up to 100kW BESS and 100kW PV inverter.
  • ECpvX M: Microgrid up to 500kW BESS and 500kW PV inverter.
  • ECpvX L: Microgrid unlimited BESS and PV inverter capacity.

Variants

  • ECsync 200

    For BESS with max current of 320A.

  • ECsync 400

    For BESS with max current of 640A.

  • ECsync 600

    For BESS with max current of 1000A.

  • ECsync 800

    For BESS with max current of 1280A.

  • ECsync Control

    For BESS with external breaker.

Downloads

6 files

Resources

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Product FAQ

ECsync

ECsync questions

Does the "grid" have to be the public grid?

No. It can be the public utility grid or a grid provided by gensets.

Can I switch between grid and island by hand?

Yes. In Manual mode you operate the breaker directly on the synchronization relay's display, and the ECpvX or ECcubeX acknowledges the command and controls the plant accordingly.

In Auto mode you choose on-grid or off-grid from the ECpvX, in ECweb or on the ECpanel.

What happens when it switches?

In on-grid mode it always reconnects the BESS to the grid when the grid is available.

In off-grid mode it first adjusts the BESS and PV output to unload the breaker, then opens it.

How big is it, and where can it be installed?

ECsync 200 is wall-mounted, 1000 × 800 × 400 mm and 90 kg. ECsync 400, 600 and 800 are floor-standing, 1464 × 1008 × 432 mm and 170 kg.

All are for indoor use, IP54 with forced air cooling, for 5–40 °C and up to 2000 m altitude. Power cables enter from the bottom or top, control cables from the bottom.

Which protections are built in?

ROCOF, vector jump, multi-level low/high voltage, high current and low/high power protection, positive, negative and zero sequence, and unbalanced voltage and current. All are available, but not all are enabled by default.

It also has fault protection against electrical shock in the supply and an undervoltage coil in the breaker.

When should I choose ECsync Control?

When you use your own external breaker. ECsync Control is a 600 × 600 × 240 mm, 30 kg wall-mounted cabinet that operates the breaker through potential-free contacts.

It works at 200–440 V phase-to-phase, or at other voltage levels through voltage transformers.

Can the controller be built into it?

Yes. ECsync can be equipped with an ECpvX built in, with the same extras as ECcubeX.

It also has 8 relay outputs (10 A) and 8 24 VDC inputs usable from EClogic; 2 of the inputs are reserved for grid and genset breaker feedback.

These answers are general information based on our product documentation at the time of writing. They are not binding and may change at any time. For your project, the current datasheet, manual and our written order confirmation apply.

Alvis is AI and can make mistakes. For quotes and exact specs, contact sales.

Planning a site with ECsync?

Tell us about your plant. We'll help you pick the right variant and accessories, and send a quote.

Talk to salessales@encombi.com

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