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Tesys Contactors: For Switching 3-Phase Capacitor Banks, Used For Power Factor Correction

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sulphurdioxide

This document discusses TeSys contactors that are designed for switching 3-phase capacitor banks used for power factor correction. Special contactors called LC1 DpK can switch single or multiple-step capacitor banks up to 6 steps without needing choke inductors. They are rated for high peak currents and cycling rates. Dimensions and connection diagrams are provided for different contactor models.

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Tesys Contactors: For Switching 3-Phase Capacitor Banks, Used For Power Factor Correction

Uploaded by

sulphurdioxide
53 views2 pages
This document discusses TeSys contactors that are designed for switching 3-phase capacitor banks used for power factor correction. Special contactors called LC1 DpK can switch single or multiple-step capacitor banks up to 6 steps without needing choke inductors. They are rated for high peak currents and cycling rates. Dimensions and connection diagrams are provided for different contactor models.

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This document discusses TeSys contactors that are designed for switching 3-phase capacitor banks used for power factor correction. Special contactors called LC1 DpK can switch single or multiple-step capacitor banks up to 6 steps without needing choke inductors. They are rated for high peak currents and cycling rates. Dimensions and connection diagrams are provided for different contactor models.

Copyright:

© All Rights Reserved
Download as PDF, TXT or read online from Scribd
Download as pdf or txt
53 views2 pages

Tesys Contactors: For Switching 3-Phase Capacitor Banks, Used For Power Factor Correction

Uploaded by

sulphurdioxide
This document discusses TeSys contactors that are designed for switching 3-phase capacitor banks used for power factor correction. Special contactors called LC1 DpK can switch single or multiple-step capacitor banks up to 6 steps without needing choke inductors. They are rated for high peak currents and cycling rates. Dimensions and connection diagrams are provided for different contactor models.

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References TeSys contactors

For switching 3-phase capacitor banks,


used for power factor correction
Direct connection without choke inductors

Special contactors
Special contactors LC1 DpK are designed for switching 3-phase, single or
multiple-step capacitor banks (up to 6 steps). Over 6 steps, it is recommanded
to use chokes in order to limit the inrush current and thus improve the lifetime
of the installation. The contactors are conform to standards IEC 60070 and 60831,
UL and CSA.

Contactor applications
Specification
Contactors fitted with a block of early make poles and damping resistors, limiting
the value of the current on closing to 60 In max.
This current limitation increases the life of all the components of the installation,
in particular that of the fuses and capacitors.
The patented design of the add-on block (n° 90 119-20) ensures safety and long life
of the installation.
Operating conditions
There is no need to use choke inductors for either single or multiple-step capacitor
banks. Short-circuit protection must be provided by gI type fuses rated at 1.7…2 In.
Maximum operational power
The power values given in the selection table below are for the following operating
conditions:
PF511555.eps

Prospective peak current LC1 DpK 200 In


at switch-on
Maximum operating rate LC1 DFK, DGK, DLK, DMK, DPK 240 operating cycles/hour
LC1 DTK, DWK 100 operating cycles/hour
Electrical durability at All contactor ratings 400 V 300 000 operating cycles
nominal load 690 V 200 000 operating cycles

Operational power Instantaneous Tightening Basic reference, Weight


at 50/60 Hz (1) auxiliary torque on to be completed
θ y 55 °C (2) contacts cable end by adding
the voltage code
(3)
220 V 400 V 660 V
240 V 440 V 690 V
LC1 DFK11pp kVAR kVAR kVAR N/O N/C N.m kg
6.7 12.5 18 1 2 1.7 LC1 DFKpp 0.430

8.5 16.7 24 1 2 1.7 LC1 DGKpp 0.450


PF511556.eps

10 20 30 1 2 2.5 LC1 DLKpp 0.600

15 25 36 1 2 2.5 LC1 DMKpp 0.630

20 33.3 48 1 2 5 LC1 DPKpp 1.300

25 40 58 1 2 5 LC1 DTKpp 1.300

40 60 92 1 2 9 LC1 DWK12pp 1.650

Switching of multiple-step capacitor banks (with equal or different power ratings)


The correct contactor for each step is selected from the above table, according to the power
rating of the step to be switched.
Example: 50 kVAR 3-step capacitor bank. Temperature: 50 °C and U = 400 V or 440 V.
One 25 kVAR step: contactor LC1 DMK, one 15 kVAR step: contactor LC1 DGK,
and one 10 kVAR step: contactor LC1 DFK.
(1) Operational power of the contactor according to the scheme on the page opposite.
(2) The average temperature over a 24-hour period, in accordance with standards IEC 60070
and 60831 is 45 °C.
LC1 DPK12pp (3) Standard control circuit voltages (the delivery time is variable, please consult your Regional
Sales Office):
Volts 24 48 120 220 230 240 380 400 415 440
50/60 Hz B7 E7 G7 M7 P7 U7 Q7 V7 N7 R7

Dimensions, schemes :
page 5/103

5/102 Version : 7.0 13/09/2011 24569-EN


Dimensions, TeSys contactors
schemes
For switching 3-phase capacitor banks,
used for power factor correction

Dimensions
LC1 DFK, DGK LC1 DLK, DMK
DB402404.eps

DB402405.eps

103
91

77

77
121 45 127 45

LC1 Type of fixing LC1 Type of fixing


DFK LC1 D18 See pages 5/94 and 5/95 DLK LC1 D25 See pages 5/94 and 5/95
DGK LC1 D18 See pages 5/94 and 5/95 DMK LC1 D32 See pages 5/94 and 5/95

LC1 DPK, DTK LC1 DWK


DB402406.eps

DB402407.eps

180
166

113

127

156 55 5
154 85

LC1 Type of fixing LC1 Type of fixing


DPK LC1 D40A See pages 5/94 and 5/95 DWK LC1 D80 See pages 5/94 and 5/95
DTK LC1 D65A See pages 5/94 and 5/95

Schemes
LC1 DpK
-R
DB402403.eps

13 21 31
NO NC NC
1/L1

3/L2

5/L3

A1
4/T2

6/T3
2/T1

A2
-R
14 22 32

R = Pre-wired resistor connections.

References :
page 5/102

24569-EN Version : 7.0 13/09/2011 5/103

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