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eqGrid product sheet

Better voltage quality and more capacity in weak distribution grids

eqGrid helps grid operators increase available capacity, improve voltage quality and reduce the need for grid reinforcement in weak distribution grids.

This product page describes electrical characteristics, battery system, communication interfaces, operating modes and technical integration.

Illustration of eqGrid as a resilience system, standalone or within a coordinated system
eqGrid supports resilience — standalone for critical loads, or where a higher-level system controls many units.

Electrical characteristics

Limits towards grid and load.

The system supports up to 80 A three-phase TN on the connection from the grid and towards the load.

AC connections

ParameterValue
Grid-side connectionUp to 80 A three-phase TN
Load-side connectionUp to 80 A three-phase TN
Supported topologiesTN, IT and TT
Frequency50 or 60 Hz
Single-phase supportYes
Three-phase supportYes

Important limitation

If several eqGrid units are connected to the same supply, the loads MUST be separate for each eqGrid unit. Multiple eqGrid units must not be connected in parallel onto a common downstream load without written approval following engineering design from eqGrid AS.

This requirement is a precondition for the system and its protection to function correctly.

Voltage stabilisation

ParameterValue
Voltage level changeno-break (uninterrupted)
Standard voltage levels ±5%
Custom voltage levelsAvailable on request
Voltage adjustmentPatented voltage selector
T1 ensures eqGrid always has an internal TN system regardless of the topology at the site, and supports TN, IT and TT grids. When needed, T2 is used to restore the original grid topology.
Illustration of eqGrid: T1 transformer with voltage selector, battery system and T2 transformer to recreate the topology.
eqGrid: T1 transformer with voltage selector, battery system and T2 to recreate the original topology (if needed).

Battery system

ParameterValue
Battery voltage48 V LV
Standard capacity15 kWh
Expandable capacityUp to 75 kWh
External battery supportYes, incl. 48 V AGM

Power to and from the battery

ParameterValue
Continuous power13.5 kW
30 min overload18 kW
5 s transient support36 kW
Designed to limit rapid voltage variations with durations down to under 20 ms.

Communication & integration

InterfaceDescription
WAN4G / 5G
EthernetRJ45
Field interfacesRS485 / RS232 / CAN
External IODigital and analog IO

Protocol support

  • Modbus RTU
  • Modbus TCP
  • MQTT
  • IEC 60870-5-104
  • IEC 61850 — roadmap

Operating modes

ModeSupported
On-gridYes
Off-gridYes
Hybrid operationYes
Parallel operationYes, but with separate loads per system
Black start capableYes
UPS-like transition supportYes

Mechanical dimensions

ParameterValue
Standard designFree-standing outdoor cabinet
Standard dimensions100 × 80 × 200 cm
Standard weightApprox. 600 kg
The standard configuration is for outdoor three-phase use.

Requirements & standards

  • EN50160
  • EN50549-1
  • Designed to meet relevant EMC requirements for industrial equipment in the utility sector
  • Built from CE-marked components

Distributed resilience solution

Multiple eqGrid units can be coordinated within the same substation area and across larger areas to influence voltage quality and secure critical loads in small and large grid sections.

Contact eqGrid for information and assistance with integration, engineering design, configuration and use.