Table of Contents
Advertisement
4.1 Electrical installation
4.1.1 What this chapter contains
This chapter describes how to connect the power cables (incoming main power lines and motor power cabling) to the
ACB530 Drive. It also addresses compatibility of the ACB530 with certain special power systems including IT (ungrounded)
and corner-grounded TN Systems.
WARNING! The work described in this chapter may only be carried out by a qualifi ed electrician. Follow the instructions in
chapter 1 regarding safety.
•
Ignoring the safety instructions can cause injury or death.
•
Make sure that the drive is disconnected from the input power during installation.
•
If the drive is already connected to the input power, wait for 5 minutes after disconnecting the input power.
4.2 Checking the insulation of the assembly
4.2.1 Drive
Do not make any voltage tolerance or insulation resistance tests (for example hi-pot or megger) on any part of the drive as
testing can damage the drive. Every drive has been tested for insulation between the main circuit and the chassis at the
factory.
Also, there are voltage-limiting circuits inside the drive which reduce the testing voltage automatically.
4.3 Planning the electrical installation
4.3.1 What this section contains
This section contains the instructions that you must follow when checking the compatibility of the motor and drive, and
selecting cables, protections, cable routing and way of operation for the drive.
Note: The installation must always be designed and made according to applicable local laws and regulations. Baldor
does not assume any liability whatsoever for any installation which breaches the local laws and/or other regulations.
Furthermore, if the recommendations given by Baldor are not followed, the drive may experience problems that the
warranty does not cover.
4.3.2 Implementing the AC power line connection
See the requirements in section Electric power supply specifi cation. Use a fi xed connection to the AC power line.
WARNING! As the leakage current of the device typically exceeds 3.5 mA, a fi xed installation is required according to IEC
61800-5-1.
4.3.2.1 Using a line reactor
An line reactor should be used in cases where unstable supply networks exist. A line reactor can also be used to decrease
the input fault current in case of an internal drive failure.
4.3.3 Disconnecting Device for Isolation
Install a hand-operated input disconnect (disconnecting means) between the AC power source and the drive. The
disconnecting device must be of a type that can be locked to the open position for installation and maintenance work.
• Europe: To meet the European Union Directives, according to standard EN 60204-1, Safety of Machinery, the
disconnecting device must be one of the following types:
– a switch-disconnector of utilization category AC-23B (EN 60947-3) – a disconnector having an auxiliary contact
that in all cases causes switching devices to break the load circuit before the opening of the main contacts of the
disconnector (EN 60947-3).
– a circuit breaker suitable for isolation in accordance with EN 60947-2.
• Other regions: The disconnecting device must conform to regional applicable safety regulations.
Motor Compatibility
The motor, drive and supply power must be compatible:
MN796 - ACB530
Chapter 4
Power Wiring
Power Wiring 4-1
Advertisement
Table of Contents
