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Implementing protections for the energy storage
■
General principles
The requirements for the customer-defined protections at the energy storage end:
•
disconnecting device between drive and energy storage system (for example, isolation
disconnector switch, withdrawable circuit breaker)
•
proper overload and short circuit protection for the cabling (for example, circuit breaker
with thermal or electromagnetic trip unit)
•
proper overload and short circuit protection for the energy storage elements itself (for
example, integrated overload protection in batteries).
■
Selecting the protective circuit breaker of the energy storage
WARNING!
ABB is not responsible for the energy storage selection or protection of the energy
storage.
The customer (or the system integrator) must equip the energy storage with a protective
circuit breaker. The breaker must be able to switch the load current on and off. The breaker
must also provide the overload and short-circuit protection for the energy storage. If there
is no other protection devices for the cables at the energy storage end, the breaker must
also provide the overload and short-circuit protection for the cable(s).
The energy storage protective circuit breaker does not belong to the converter unit delivery.
The customer (or the system integrator) must verify the operation of the circuit breaker by
short circuit calculations taking into account impedances of the converter, filter, cabling and
energy storage, and minimum and maximum state of charge of the energy storage. The
customer (or the system integrator) must take into account the impact of ageing to storage
impedances.
■
Energy storage disconnecting device
The customer (or the system integrator) must equip the energy storage also with an energy
storage disconnecting device. The disconnecting device does not belong to the converter
unit delivery.
■
Overload protection of the system by the DC/DC converter
There is a thermal protection function in the DC/DC converter control program. For more
information on the thermal protection function, see the firmware manual.
■
Protecting the energy storage cable
ABB equips the DC/DC converter unit with fuses as standard. The fuses protect the DC/DC
converter and cables in a cable short-circuit situation.
The customer (or the system integrator) must equip the energy storage with overload and
short circuit protection for the cable.
■
Energy storage discharging device
When necessary, the customer (or the system integrator) must equip the energy storage
with a discharging device. If the energy storage is a super capacitor, we recommend to
have it.
Guidelines for planning electrical installation 55
Summary of Contents for ACS880-1604LC
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 1604LC DC DC converter modules Hardware manual ...
Page 2: ......
Page 4: ......
Page 12: ...12 ...
Page 16: ...16 ...
Page 34: ...34 ...
Page 42: ...Kits for ACS880 1604LC R8i unit in Rittal VX25 cabinets 42 Cabinet construction ...
Page 43: ...Stage 1 Installation of common parts Cabinet construction 43 10 ...
Page 45: ...Stage 3 Module installation parts Cabinet construction 45 10 ...
Page 46: ...Stage 4 DDC and energy storage connection 46 Cabinet construction ...
Page 47: ...Stage 5A DC connection with charging Cabinet construction 47 10 ...
Page 48: ...Stage 5B DC connection without charging 48 Cabinet construction ...
Page 49: ...Stage 6 Cooling components Cabinet construction 49 10 ...
Page 50: ...Stage 7 DDC module and filter installation 50 Cabinet construction ...
Page 51: ...Stage 8 Swing frame and shroud installation Cabinet construction 51 10 ...
Page 58: ...58 ...
Page 72: ...72 ...
Page 124: ...124 ...
Page 138: ...138 ...
Page 148: ...148 ...
Page 150: ...R8i DC DC converter module 150 Dimension drawings ...
Page 151: ...BDCL filter module Dimension drawings 151 ...
Page 152: ...Quick connector 152 Dimension drawings ...
Page 153: ...BCU control unit Dimension drawings 153 ...
Page 154: ...BAMU voltage current measurement unit Dimensions in mm 1 mm 0 0394 in 154 Dimension drawings ...