Start-Up; Contents Of This Chapter; Start-Up Procedure; Basic Checks With No Voltage Connected - ABB ACS800 Series Hardware Manual

Start-up

Contents of this chapter

This chapter describes the start-up procedure of the converter. The installation of the
converter system must be checked before start-up. See chapter
checklist.

Start-up procedure

Action
WARNING! The work described in this chapter must only be carried out by a qualified electrician. The
instructions on the first pages of this manual must be followed. Negligence of the safety instructions can cause
injury or death.
WARNING! Ensure that the disconnector of the supply transformer is locked out, i.e. no voltage is, or can be,
connected to the converter system inadvertently. Check also by measuring that there is no voltage connected.
Ensure that the stator of the generator is isolated from the supply. It is also highly recommended to close the
mechanical brake of the generator.

Basic checks with no voltage connected

Open the power cabinet door and remove the protection covers to check
visually that there are no extra or loose material whatsoever inside the
cabinet. Also check that there is no condensed moisture on the power
cabinet surfaces, including bus bars, terminal and other components.
Check that the Roxtec cable lead-throughs and other cable lead-through
grommets are tightened and sealed properly.
Check the current trip limits of the circuit breakers (preset at the factory).
General rule
Ensure the selectivity condition is fulfilled i.e. the breaker trips at a lower
current than the protection device of the supplying network, and that the
limit is high enough not to cause unnecessary trips during the
intermediate DC circuit load peak at start.
Long term current limit
As a rule of thumb, this should be set to the rated AC current of the
module.
Peak current limit
As a rule of thumb, this should be set to a value 2-3 times the rated AC
current of the module.
Check the settings of the relays and breakers/switches of the auxiliary
circuits.
Check the power cabinet default setting for temperature sensor is 10°C
and for humidity sensor 85% RH.
Disconnect any unfinished or unchecked 230/115 VAC cables that lead
from the terminal blocks to the outside of the equipment.
Check the means of stopping the machinery.
Can the rotation of the driven machine be stopped if necessary? Check
the mechanical brakes.
Installation
Additional information
Optional device. See the circuit
diagrams delivered with the
converter.
Optional devices. See the circuit
diagrams delivered with the
converter.
87
Safety
Start-up