ABB ACS 800 Series User manual

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ABB LOW VOLTAGE AC DRIVES, WIND TURBINE CONVERTERS AND SOLAR INVERTERS

Converter modules with electrolytic DC

capacitors in the DC link

Capacitor reforming instructions

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Table of contents

1. Introduction

Contents of this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ABB low voltage AC drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ABB wind turbine converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

ABB solar inverters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Target audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Purpose of the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2. Reforming the capacitors

Contents of this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Overview of the reforming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Reforming time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Checking the converter age . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Reforming with power on for 30 minutes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Reforming with external DC power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Reforming with external diode bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Further information

Introduction 5

Introduction

Contents of this chapter

This chapter describes the applicability, target audience and purpose of this manual and

safety instructions.

Applicability

This manual applies to converter modules which have electrolytic DC capacitors in the DC

link. The subsections below list the converter module types and product series in more

detail for each product area. All converter module types are referred to as converter or

converter module in this manual.

Note: A drive module is used in all connection diagrams. The connection principle is the

same for the other converter module types as well but the terminal markings can vary.

ABB low voltage AC drives

This manual applies to drive, inverter, IGBT supply and three-phase brake modules in

product series ACS800, ACS850, ACQ810, ACSM1, ACS380, ACH480, ACS480,

ACH580, ACQ580, ACS580 and ACS880, that is, the following module types:

•ACS800-01, -11, -31, -02, -04, -104 and -104LC

•ACS850-04

•ACQ810-04

•ACSM1-04 and ACSM1-204

•ACS380

•ACH480

•ACS480

•ACH580-01, -04, -31 and 34

6 Introduction

•ACQ580-01, -04, -31 and -34

•ACS580-01 and -04

•ACS880-01, -04, -11, -31, -14, -34 and -104.

ABB wind turbine converters

This manual applies to line-side converter modules and generator-side converter modules

in product series ACS800-67LC, ACS800-77LC, ACS800-87LC and ACS800N-87LC.

Note: ACS800-67 and ACS800-77 modules include film capacitors in the DC link instead

of electrolytic capacitors.The film capacitors do not need to be reformed.

ABB solar inverters

This manual applies to solar inverter modules in product series PVS800-57 and PVS800-

57B.

Target audience

You are expected to know the standard electrical wiring practices, electronic components,

and electrical schematic symbols.

Purpose of the manual

The manual provides information needed for reforming the converter module capacitors.

Safety instructions

WARNING! Obey the safety instructions delivered with the converter and given in

this manual. If you ignore them, injury or death, or damage to the equipment can

occur. If you are not a qualified electrical professional, do not do electrical

installation or maintenance work.

1. Drives: Never work on the converter, motor cable or motor when input power is

applied. After you have disconnected the input power, always wait for 5 minutes to let

the intermediate circuit capacitors to discharge before you start to work on the

converter, the motor or motor cable.

Wind turbine converters: Never work on the converter or generator when input power

is applied. After you have disconnected the input power, always wait for 10 minutes to

let the intermediate circuit capacitors discharge before you start to work on the

converter, generator or generator cable.

Solar inverters: Do not do work on the photovoltaic generator or the inverter or its input

or output cables when the inverter is connected to an electrical power system or to the

photovoltaic generator. After you have disconnected the inverter, always wait for 5

minutes to let the intermediate circuit capacitors discharge before you continue.

2. Measure that the installation is de-energized.

•Use a multimeter with an impedance of at least 1 Mohm.

•Make sure that the voltage between the converter input power terminals (U1, V1

and W1) and the grounding terminal (PE) is close to 0 V.

•Make sure that the voltage between the drive DC terminals (UDC+ and UDC-) and

the grounding terminal (PE) is close to 0 V.

3. Never switch on the converter power supply while the reforming circuit is connected.

Lock the disconnector (if any) to an open position.

Introduction 7

4. Make sure that the converter is clean and dry (no condensation) before you start the

reforming.

8 Introduction

Reforming the capacitors 9

Reforming the capacitors

Contents of this chapter

This chapter contains the instructions on how to reform the converter capacitors. It

contains three alternative methods.

Overview of the reforming

Electrolytic DC capacitors in the converter module DC link need to be reformed (re-aged) if

the module has been non-operational for a year or more. The reforming time depends on

how long the converter has been non-operational and on the converter module type.

Without reforming, the capacitors can get damaged when the converter starts to operate.

If the converter has been non-operational for less than one year, the capacitors do not

need reforming.

Besides the reforming methods presented in this manual, ABB can supply you with ready-

made reforming devices, such as FINERO FST-DCP 1500-05 and FUG HCK 800-2000.

For more information, contact your local ABB representative.

Reforming time

The intermediate circuit (DC link) of the converter is connected to its nominal voltage for

the reforming time to “wake up” the capacitors. The diagram below shows the required

reforming time.

If the converter has been stocked (non-operational) for one to two years (graph a), it can

be reformed with power on for 30 minutes method.

If the converter has been stocked (non-operational) for one to three years (graph b), it can

be reformed with power on for 30 minutes method. See section Reforming with power on

for 30 minutes on page 11.

10 Reforming the capacitors

If the non-operational time has been more than two (graph a) or three (graph b) years,

reform the converter using the method in section Reforming with external DC power

supply on page 11 or Reforming with external diode bridge on page 13.

Checking the converter age

The converter serial number defines the week when the converter was manufactured:

•7 digits: For example, in 3260034, 3 denotes manufacturing year (2003), 26

manufacturing week and 0034 running manufacturing number.

•8 digits: For example, in 14250125, 1 denotes manufacturing country (1 = Finland), 4

manufacturing year (2004), 25 manufacturing week and 0125 running manufacturing

number.

•10 digits: For example, in 1173200725, 1 denotes manufacturing country, 17

manufacturing year (2017), 32 manufacturing week and 00725 running manufacturing

number.

Reforming time (hours)

Non-operational time (years)

21 43 65

a) Product series ACS800, ACS850, ACQ810, ACSM1, ACS880-104, ACS380, ACH480 and

ACS480

b) Product series ACH580, ACQ580, ACS580 and ACS880 except ACS880-104

a b

1/2

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