Electrical Design And Installation; What This Chapter Contains - ABB ESI-S Installation, Operation And Maintenance Instructions

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6 Electrical design and installation

6.1

What this chapter contains

This chapter gives the data required for integrating the ESI-S successfully in an electrical
installation. It also gives electrical connection examples for popular energy storage
features.
WARNING: The ESI-S is able to operate on networks in a voltage range 208-240 V and
380-415 V with a tolerance range of +/- 10 % (inclusive of harmonics but not
transients). Since operation at the upper limits of voltage and temperature may
reduce its life expectancy, the ESI-S should not be connected to systems for which it
is known that over voltages will be sustained indefinitely. Excessive voltage levels may
lead to inverter damage.
The inverter must be connected to the network in parallel with the loads.
WARNING: The ESI-S does not incorporate protective power line fuses or main
contactor. Hence the customer has to ensure that the feeding cables to each inverter
panel are adequately protected taking into account the inverter rating and the cable
section used. More information on this topic is presented in
Basic functionality can be obtained after connection of:
- Ground (PE) (per enclosure)
- DC power cables to the Battery
- 1 CT
More advanced features (e.g. external monitoring of the inverter status, islanding, black
start...) require some more connections. The connections for these advanced features
have to be made on the ESI-Manager and on the network.
38 Electrical design and installation ç Manual Energy Storage Inverter ESI-S
Section 6.7.