Input Line Reactors - Control Techniques Commander SE Advanced User's Manual

6

Input line reactors

Line reactors can be used to reduce supply harmonics and also should be used if any of the following conditions apply:
• Supply capacity exceeds 200kVA
• Fault current exceeds 5kA
• Power-factor correction equipment is connected close to the drives
• Large DC drives having no or ineffective line reactors connected to the supply
• Direct on-line started motor(s) are connected to the supply and, when any of these motors are started, a dip is produced
in excess of 20% of the actual supply voltage
During any of the above conditions, excessive peak current may flow in the input bridge. This may cause nuisance drive
tripping or, in extreme cases, failure of the input bridge.
A line reactor should then be connected in each phase of the supply to the input bridge. Line reactor(s) add the required
impedance to the AC supply in order to reduce current transients to a level that can be tolerated by the input bridge. An
impedance value of 2% is usually recommended.
Three individual reactors, or a single three-phase reactor should be used. Each network of drives must have its own
reactor(s).
RFI filters (for EMC purposes) do not give adequate protection against these conditions.
CAUTION
The following line reactors are available through Control Techniques:
Part Number Phases Inductance
4402-0224
4402-0225
4402-0226
4402-0227
4402-0228
4402-0229
4402-0232
*4400-0240
*4400-0241
NOTE
Commander SE sizes 3, 4 and 5 drives include DC chokes, AC reactors are only required for harmonic reduction.
NOTE
*These input line reactors are not stocked by Control Techniques. Therefore they should be ordered directly from
the manufacturer, Skot Transformers, or sourced locally.
sales @skot.co.uk
They can be ordered using the above part numbers or Skot reference numbers:
CT Part Number
4400-0240
4400-0241
Line reactors also improve the input current waveform and reduce the input current harmonic levels. Further information is
included in the EMC Data Sheets.
Input line reactors for Harmonics standards EN61000-3-2 & IEC61000-3-2
The following input line reactors allow the Commander SE 0.25 - 0.55kW drives to conform to harmonic standards EN61000-
3-2 and IEC61000-3-2
Drive
SE12200025
SE12200037
SE12200055
EN61000-3-2 and IEC61000-3-2 applies to equipment with a supply voltage of 230VAC and a line current up to 16A, single or
three phase. Professional equipment with rated input power exceeding 1kW has no limits - this applies to the 0.75kW drive.
Further information on EN61000-3-2 and IEC61000-3-2 is included on the EMC data sheets available from your local Control
Techniques Drive Centre or distributor.
Commander SE Advanced User Guide
Issue Number: 4
Continuous
rms current
A
1 2.25 6.5
1 1.0 15.1
1 0.5 26.2
3 2.0 7.9
3 1.0 15.4
3 0.4 24.6
3 0.6 27.4
3 0.45 46
3 0.3 74
Skot reference number
35232
35233
Reactor part Drive power
number de-rating
4400-0239 None
4400-0238 None
4400-0237 18%
Peak
Weight
current
A kg
13 0.8 1.8
30.2 1.1 2.4
52.4 1.5 3.3
15.8 3.5 7.7
47.4 3.8 8.4
49.2 3.8 8.4
54.8 6 13
92 7 15.5
148 10 22
Input power Inductance Continuous
rms current
W mH
374 4.5
553 9.75
715 16.25
Drive used on
lb
11200025, 11200037
11200055, 11200075, 2D200075,
2D200110
2D200150, 2D200220
23400075, 23400110, 23400150
2D200075, 2D200110, 2D200150,
23400220, 23400300, 23400400,
33400550, 33400750
23200400, 2D200220, 33200550,
33200750
43401100, 43401500
43401850, 53402200
53403000, 53403700
2.4
3.2
4.5
137