Control Techniques Commander SK Getting Started Guide

Commander SK Getting Started Guide 11
Issue Number: 1 www.controltechniques.com
Safety
Information
Rating
Data
Mechanical
Installation
Electrical
Installation
Keypad
and Display
Parameters
Quick Start
Commissioning
Diagnostics Options
Parameter
List
UL Listing
Information
4.2 Ground leakage
The ground leakage current depends upon the internal EMC filter being fitted. The drive
is supplied with the filter fitted. Instructions for removal of the internal EMC filter are
given in section 4.3.1 Removing the internal EMC filter .
With internal EMC filter fitted
30 µ A DC (10M Ω internal bleed resistor, relevant where DC leakage current is being measured)
Size A
10mA AC at 230V, 50Hz (proportional to supply voltage and frequency)
Size B and C
1 phase 200V drives
20mA AC at 230V, 50Hz (proportional to supply voltage and frequency)
3 phase 200V drives
8mA AC at 230V, 50Hz (proportional to supply voltage and frequency)
3 phase 400V drives
8.2mA AC at 415V, 50Hz (proportional to supply voltage and frequency)
With internal EMC filter removed
<2mA
4.2.1 Use of earth (ground) leakage circuit breakers (ELCB) / residual current
device (RCD)
There are three common types of ELCB/RCD:
Type AC - detects AC fault currents
Type A - detects AC and pulsating DC fault currents (provided the DC current
reaches zero at least once every half cycle)
Type B - detects AC, pulsating DC and smooth DC fault currents
• Type AC should never be used with drives
• Type A can only be used with single phase drives
• Type B must be used with three phase drives
Frame size Maximum power terminal screw torque
A 0.5 N m / 4.4 lb in
B and C 1.4 N m / 12.1 lb in
When connecting single phase to a dual rated 200V unit, use terminals L1 and L3.
NOTE
For control terminal connections, see Pr 05 on page 21.
NOTE
For information on the internal EMC filter, see section 4.3 Internal EMC filter .
NOTE
The above leakage currents are just the leakage currents of the drive with the internal
EMC filter connected and do not take into account any leakage currents of the motor or
motor cable.
NOTE
In both cases, there is an internal voltage surge suppression device connected to
ground. Under normal circumstances, this carries negligible current.
NOTE
When the internal EMC filter is fitted, the leakage current is high. In this case, a
permanent fixed ground connection must be provided using two independent conductors
each with a cross-section equal to or exceeding that of the supply conductors. The drive
is provided with two ground terminals to facilitate this. The purpose is to prevent a safety
hazard occurring if a connection is lost.
WARNING

Control Techniques Commander SK Specifications

General

Brand	Control Techniques
Model	Commander SK
Category	Inverter
Language	English