Siemens SENTRON, 3KC8, 3KC4 User Manual
Manual
08/2017
Introduction
1
General information
2
Product information
3
Functions
4
Mounting
5
Connection
6
Operation
7
Commissioning
8
Accessories
9
Service and maintenance
10
Technical specifications
11
Dimension drawings
12
Applications
13
Appendix
A
ESD guidelines
B
List of abbreviations
C
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L1V30368969104A-02
___________________
Legal information
Warning notice system
DANGER
will
WARNING
may
CAUTION
NOTICE
Qualified Personn el
personnel qualified
Proper use of Siemens products
WARNING
Trademarks
Disclaimer of Liability
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safet y alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
indicates that death or severe personal injury
indicates that death or severe personal injury
indicates that minor personal injury can result if proper precautions are not taken.
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
result if proper precautions are not taken.
result if proper precautions are not taken.
The product/system described in this documentation may be operated only by
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Note the following:
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storag e, inst alla ti on, assem b ly, comm is sion ing , oper at ion and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
for the specific
Siemens AG
Division Energy Management
Postfach 32 20
91050 ERLANGEN
GERMANY
Document order number: 3ZW1012-3KC83-0AC1
Ⓟ 09/2017 Subject to change
Copyright © Siemens AG 2017.
All rights reserved
Table of contents
1 Introduction ............................................................................................................................................. 9
2 General informatio n .............................................................................................................................. 11
3 Product information ............................................................................................................................... 13
4 Functions .............................................................................................................................................. 25
5 Mounting ............................................................................................................................................... 27
6 Connection ........................................................................................................................................... 31
2.1 Certification ............................................................................................................................. 11
3.1 Product description ................................................................................................................. 13
3.1.1 Design of the 3KC4 and 3KC8 transfer switching equipment................................................. 14
3.1.2 Current ratings of the 3KC4 and 3KC8 transfer switching equipment .................................... 18
3.2 Product family ......................................................................................................................... 21
3.2.1 The product families 3KC4 and 3KC8 from 250 A to 3200 A ................................................. 21
3.2.2 Use of 3KC4 and 3KC8 transfer switching equipment ........................................................... 22
3.2.3 Properties of the 3KC4 and 3KC8 transfer switching equipment ........................................... 22
3.2.4 Application areas of the 3KC4 and 3KC8 transfer switching equipment ................................ 23
5.1 Mounting position .................................................................................................................... 27
5.2 Installing the 3KC4 and 3KC8 transfer switching equipment.................................................. 27
5.3 Dimensions of the cover frame for door cut-out ..................................................................... 30
6.1 Network types ......................................................................................................................... 31
6.1.1 Three-phase 4-wire network with neutral (3PH + N) .............................................................. 32
6.1.1.1 Circuit diagram for the 3KC4 transfer switching equipment - 4-pole transfer switching
equipment ............................................................................................................................... 32
6.1.1.2 Circuit diagram for the 3KC8 transfer switching equipment - 4-pole transfer switching
equipment ............................................................................................................................... 33
6.1.2 Three-phase 3-wire network without neutral (3PH) ................................................................ 33
6.1.2.1 Circuit diagram for the 3KC4 transfer switching equipment - 3-pole transfer switching
equipment ............................................................................................................................... 34
6.1.2.2 Circuit diagram for the 3KC8 transfer switching equipment - 4-pole transfer switching
equipment ............................................................................................................................... 35
6.1.2.3 Circuit diagram for the 3KC8 transfer switching equipment - 3-pole transfer switching
equipment ............................................................................................................................... 36
6.1.3 Single-phase network with neutral (1PH + N) ......................................................................... 37
6.1.3.1 Circuit diagram for the 3KC4 transfer switching equipment - 3-pole transfer switching
equipment ............................................................................................................................... 37
6.1.3.2 Circuit diagram for the 3KC8 transfer switching equipment - 3-pole transfer switching
equipment ............................................................................................................................... 38
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Table of contents
7 Operation ............................................................................................................................................. 101
6.2 Connecting the main circuit .................................................................................................... 39
6.2.1 Connecting terminals of the transfer switching equipment .................................................... 39
6.2.2 Load connection ..................................................................................................................... 40
6.2.3 Arrangement of the power supply systems ............................................................................ 40
6.2.4 Connection of transfer switching equipment for current ratings 250 A to 1600 A ................. 42
6.2.4.1 Connecting bridging bars on the load side ............................................................................ 42
6.2.4.2 Connecting current ratings 250 A to 1600 A to the main circuit ............................................ 46
6.2.5 Connection of transfer switching equipment for current ratings 2000 A to 3200 A ............... 49
6.2.5.1 Copper bar connection kit ...................................................................................................... 49
6.2.5.2 Connecting current ratings 2000 A to 3200 A to the main circuit (on the line side) ............... 55
6.2.5.3 Connecting current ratings 2000 A to 3200 A to the main circuit (on the load side) ............. 65
6.3 Connecting the control circuit ................................................................................................. 72
6.3.1 Inputs and outputs of the motor operator ............................................................................... 72
6.3.1.1 Overview of motor operator ................................................................................................... 72
6.3.1.2 Connecting the inputs and outputs of the motor operator ..................................................... 73
6.3.2 Power supply of the motor operator (3KC4 only) ................................................................... 75
6.3.2.1 Mounting and connecting the dual power supply (DPS) ........................................................ 77
6.3.2.2 Installing and connecting an autotransformer (400 V / 230 V) .............................................. 79
6.3.3 Auxiliary switch of the transfer switching equipment ............................................................. 81
6.3.3.1 Installing auxiliary switches 250 A to 630 A ........................................................................... 82
6.3.3.2 Installing auxiliary switches of current rating 800 A to 1600 A .............................................. 84
6.3.4 Inputs and outputs of the electronic module (3KC8 only) ...................................................... 88
6.3.5 Connecting the inputs and outputs of the electronic module (3KC8 only) ............................. 89
6.3.5.1 Installing accessories for the electronic module .................................................................... 89
6.3.5.2 Connecting power supply kit 3KC9830-, 3KC9831- (4-pole) .................................................
6
.3.5.3 Connecting the auxiliary conductor terminal 3KC9822-, 3KC9832- for a three-phase
92
3-wire network (3-pole) .......................................................................................................... 95
6.3.5.4 Connecting power supply kit 3KC9833-, 3KC9834- for single-phase network ...................... 98
7.1 Operating modes of the transfer switching equipment ........................................................ 101
7.1.1 Remote mode ....................................................................................................................... 102
7.1.2 Manual operation ................................................................................................................. 103
7.1.3 Padlocking mode.................................................................................................................. 104
7.1.4 Automatic mode (3KC8 only) ............................................................................................... 105
7.2 Functions of the inputs and outputs ..................................................................................... 106
7.2.1 Inputs and outputs of the motor operator ............................................................................. 106
7.2.1.1 Outputs of the motor operator .............................................................................................. 111
7.2.2 Auxiliary switches ................................................................................................................. 114
7.2.3 Inputs and outputs of the electronic module (3KC8 only) .................................................... 115
7.2.3.1 Inputs for voltage measurement and power supply ............................................................. 115
7.2.3.2 Control inputs of the electronic module ............................................................................... 118
7.2.3.3 Functions of the control inputs for network / generator application ..................................... 119
7.2.3.4 Functions of the control inputs for network / network application ........................................ 121
7.2.3.5 Outputs of the electronic module ......................................................................................... 123
7.3 Remote mode ....................................................................................................................... 126
7.3.1 Impulse logic ........................................................................................................................ 126
7.3.2 Continuous operation logic .................................................................................................. 129
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Table of contents
8 Commissioning ................................................................................................................................... 139
9 Accessories ........................................................................................................................................ 145
10 Service and maintenance .................................................................................................................... 177
7.4 Automatic mode - programming of the electronic module (3KC8 only) ................................ 132
7.4.1 Step 1: Preset network conditions ........................................................................................ 132
7.4.2 Step 2: Setting the potentiometer ......................................................................................... 134
7.4.3 Step 3: Automatic configuration of the transfer switching equipment (only with
potentiometer Un = 0) ........................................................................................................... 136
7.4.4 Step 4: Saving the configuration ........................................................................................... 137
7.4.5 Step 5: Switching the 3KC8 transfer switching equipment to automatic mode .................... 137
8.1 Commissioning the 3KC4 transfer switching equipment ...................................................... 139
8.2 Commissioning the 3KC8 transfer switching equipment ...................................................... 141
9.1 Terminal covers .................................................................................................................... 146
9.1.1 Mounting terminal covers ...................................................................................................... 147
9.2 Phase barriers ....................................................................................................................... 148
9.2.1 Mounting phase barriers ....................................................................................................... 149
9.3 Terminal plates ..................................................................................................................... 150
9.3.1 Mounting terminal plates ....................................................................................................... 151
9.4 Mounting spacers .................................................................................................................. 153
9.4.1 Fitting mounting spacers ....................................................................................................... 153
9.5 Bridging bars ......................................................................................................................... 154
9.6 Copper bar connection kit ..................................................................................................... 155
9.7 Autotransformer .................................................................................................................... 157
9.8 Dual power supply (DPS, 3KC4 only) ................................................................................... 158
9.9 Power supply kit 3KC9830-, 3KC9831- (4-po le, 3KC 8 only) ................................................ 159
9.10 Auxiliary conductor terminal 3KC9822-, 3KC 983 2- (3-pole, 3KC8 only) .............................. 160
9.11 Power supply kit 3KC9833-, 3KC9834- (2-po le, 3K C8 only) ................................................ 161
9.12 Cover frame (3KC8 only) ...................................................................................................... 162
9.13 Auxiliary switches .................................................................................................................. 163
9.14 Display (3KC8 only) .............................................................................................................. 164
9.15 Connection cable (3KC8 only) .............................................................................................. 167
9.16 Sealable cover (3KC8 only) .................................................................................................. 168
9.17 Motor operator ...................................................................................................................... 170
9.18 Electronic module (3KC8 only) ............................................................................................. 175
10.1 Fault rectification ................................................................................................................... 177
10.1.1 Fault states and fault detection on the 3KC4 transfer switching equipment ......................... 177
10.1.2 Fault states and fault detection on the 3KC8 transfer switching equipment ......................... 179
10.2 Regular service and maintenance ........................................................................................ 181
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Table of contents
11 Technical specifications ....................................................................................................................... 183
12 Dimension drawings ............................................................................................................................. 191
13 Applications ......................................................................................................................................... 205
A Appendix ............................................................................................................................................. 215
B ESD guidelines .................................................................................................................................... 221
C List of abbreviations ............................................................................................................................. 223
11.1 Technical specifications 3KC4 and 3KC8 from 250 A to 1000 A ......................................... 183
11.2 Technical specifications 3KC4 and 3KC8 from 1250 A to 3200 A ....................................... 186
11.3 Technical specifications of the electronic module ................................................................ 189
12.1 Dimension drawings of the 3KC4 transfer switching equipment ......................................... 192
12.2 Dimension drawings of the 3KC8 transfer switching equipment ......................................... 198
13.1 Transfer between two sources with one outgoing load ....................................................... 206
13.2 Transfer between two sources with two outgoing loads ...................................................... 207
13.3 Transfer between three sources with one outgoing load ..................................................... 209
13.4 Transfer between three sources with two outgoing loads ................................................... 210
13.5 Transfer between two loads with one incoming source (with 3KC4 transfer switching
equipment only).................................................................................................................... 213
A.1 Environmental conditions ..................................................................................................... 215
A.2 Operating conditions ............................................................................................................ 216
A.2.1 Temperature ......................................................................................................................... 216
A.2.2 Humidity ............................................................................................................................... 216
A.2.3 Altitude conditions ................................................................................................................ 216
A.3 Storage conditions ............................................................................................................... 217
A.3.1 Temperature ......................................................................................................................... 217
A.3.2 Storage conditions ............................................................................................................... 217
A.3.3 Storage position ................................................................................................................... 217
B.1 Electrostatic sensitive devices (ESD) .................................................................................. 221
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1
Purpose of this manual
Target groups and required basic knowledge
Technical support
Applicable documents
This manual describes the functions, installation, commissioning, and operation of the
following transfer switching equ ipm ent:
● 3KC4 remotely operated transfer switching equipment (RTSE)
● 3KC8 automatic transfer switching equipment (ATSE)
The following topics are described in the manual:
● Product specifications
● Mounting
● Connection
● Operation
● Commissioning
● Accessories
● Corrective maintenance and fault rectification
● Application examples
This manual is intended for:
● Users
● Qualified electricians
● Switchgear manufacturers
● Maintenance personnel
A general knowledge of low-voltage power distribution is required to understand this manual.
You can find further support on the Internet at:
Technical support (https://www.siemens.com/lowvoltage/technical-support
)
You can find more information on the Internet via the following link:
Manual "3KC Transfer Switching Equipment up to 3200 A"
(https://support.industry.siemens.com/cs/de/en/ps/19749
Manual, 08/2017, L1V30368969104A-02
)
9
Introduction
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2
Standard
Designation
2.1
Certification
The transfer switching equipment and its accessories comply with the following international
standards:
IEC 60269-1 Low-voltage fuses - Part 1: General requirements
IEC 60269-2 Low-voltage fuses - Part 2: Supplementary requirements for fuses for use
by qualified electrical technicians or electrically trained persons (fuses pre-
dominantly for industrial use)
IEC 60947-1 Low-voltage switchgear and controlgear - Part 1: General requirements
IEC 60947-3 Low-voltage switchgear and control gear - Part 3: Switches, disconnectors,
switch-disconnectors and fuse-combination units
IEC 60947-5-1 Low-voltage switchgear and c ontrolgear - Part 5-1: Control circuit devices
and switching elements - electrom echanic al control circuit devices
IEC 60947-6-1 Low-voltage switchgear and c ontrolgear - Part 6-1: Multiple function equip-
ment - Transfer switching equipm ent
IEC 61010-1 Safety requirements for electrical equipment for measurement, control and
laboratory use - Part 3-1: Conformity verification report for IEC 61010-
1:2001 - General requirements
IEC 61326-1 Electrical equipment for measurement, control and laboratory use - EMC
requirements - Part 1 General requir em ents
EN 61558-1 Safety of transformers, power supplie s, react ors and sim il ar products - Part
1: General requirements and tests
EN 61558-2-13 Safety of transformers, reactors, power supplies and similar products for
supply voltages up to 1100 V - Part 2-13: Particular requ ir em ents and tes ts
for autotransformers and power supply units incorporating autotransform-
ers.
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General information
2.1 Certification
12 Manual, 08/2017, L1V30368969104A-02
3
3.1
Product description
The following features of the 3KC4 and 3KC8 transfer switching equipment are described in
this chapter:
● Design
● Current ratings
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Product information
3.1.1
Design of the 3KC4 and 3KC8 transfer switching equipment
3.1 Product description
3KC4 remotely operated transfer switching equipment (RTSE):
14 Manual, 08/2017, L1V30368969104A-02
Product information
①
⑪
3.1 Product description
3KC8 automatic transfer switching equipment (ATSE):
Switching unit
②
Connecting terminal of the main source
(source I)
③
Connecting terminal of the alternative source
(source II)
Indication of the selected source: O = Off /
④
I = source I / II = source II
3KC4: Cover of the power supply connection
⑤
3KC8: Electronic module (below this is located the power supply connection)
⑥
Assembly for mounting
⑦
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Motor operator
⑧
"Power" LED
⑨
Plug-on handle for manual changeover
⑩
Warning LED
Switch for selecting the mode (Manual /
Automatic)
Padlock assembly
⑫
⑬
4 outputs for
• "Switch position" (I / O / II) indicator
• "Product availability" indicator
⑭
Connection for attachable handle
⑮
5 inputs for
• Positioning commands (I / O / II)
• Activation of remote control
• Priority command for the OFF position
⑯
Mounting channels for terminal protection /
phase barriers
Fixing assembly for terminal plate
⑰
15
Product information
Electronic module
Operator controls
①
②
③
④
⑤
⑥
3.1 Product description
The 3KC8 automatic transfer switching equipment (ATSE) is based on the 3KC4
(RTSE) transfer switching equipment. In contrast to the 3KC4, an electronic module is
additionally integrated into t he 3KC8.
The electronic module enables monitoring of 2 sources as well as automatic transfer
switching. In addition, the electronic module supplies the 3KC8 transfer switching equipment
with power.
The 3KC8 transfer switching equipment is programmed using the electronic module.
You can find more information on programming in the section titled Automatic mode programming of the electronic module (3KC8 only) (Page 132).
Potentiometer 1: Presetting of line voltage/frequency (AutoConf, 1 to 13)
Potentiometer 2: Presetting of voltage/frequency limits (1 to 14)
Potentiometer 3: Presetting of the transfer time delay for source failure (0 to 60 s)
Potentiometer 4: Presetting of the return switching time delay for prioritized source recovered
(0 to 60 min)
DIP switch for configuration
"OK-Prog" pushbutton: Saves the current settings
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Product information
Indicators (LEDs)
Designation
Function
Meaning
①
②
③
④
⑤
⑥
Flashes green if the transfer switching equipment is in
⑦
⑧
3.1 Product description
I Availability
II Availability
READY "Ready" mode Indicates the status of the transfer switching equipment:
MANUAL "Manual" mode Shows a continuous yellow light if the transfer switching
AUTO "Auto" mode Indicates the activity of "Auto" mode:
REMOTE "Remote" mode Shows a continuous yellow light if the transfer switching
TEST
ON LOAD
source I
source II
Fault indicator
"Test on load"
mode
Shows a continuous green light if source I is available
and is within the accepted tolerance.
Shows a continuous green light if source II is available
and is within the accepted tolerance.
• Flashes red if there is an external fault (e.g. incorrect
• Shows a continuous red light if there is an internal
• Shows a continuous green light if the transfer switch-
• Flashes green if defaults haven not been saved or a
equipment is in "Manual" mode.
• Shows a continuous green light if the transfer switch-
•
equipment is in remote mode (controlled via inputs).
Shows a continuous yellow light if the transfer switching
equipment is in "Test on load" mode.
position of the neutral conductor).
fault of the electronic module.
ing equipment is in "Auto" mode and is ready for
source transfer.
new change has been made.
ing equipment is in "Auto" mode and no timer is active.
"Auto" mode and the timer is active.
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17
Product information
⑨
⑩
⑪
⑫
3.1.2
Current ratings of the 3KC4 and 3KC8 transfer switching equipment
Current rating
Device type
3KC4 (RTSE)
3KC8 (ATSE)
3-pole
4-pole
3-pole
4-pole
3.1 Product description
TEST
OFF LOAD
- Position II indication Shows a continuous green light if the switch is in posi-
- Position I indication Shows a continuous green light if the switch is in posi-
O Position "0" indica-
"Test off load"
mode
tion
Shows a continuous yellow light if the transfer switching
equipment is in "Test off load" mode.
tion II.
tion I.
Shows a continuous yellow light if the switch is in posi-
tion "0" (OFF).
The 3KC4 and 3KC8 transfer switching equipment are available in 10 current ratings. The
table shows the types of transfer switching equipment according to the current ratings:
250 A ✓ ✓ ✓ ✓
400 A ✓ ✓ ✓ ✓
630 A ✓ ✓ ✓ ✓
800 A ✓ ✓ ✓ ✓
1000 A ✓ ✓ ✓ ✓
1250 A ✓ ✓ ✓ ✓
1600 A ✓ ✓ ✓ ✓
2000 A ✓ ✓ ✓ ✓
2500 A ✓ ✓ ✓ ✓
3200 A ✓ ✓ ✓ ✓
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Product information
Designs
3KC8 250 A
3KC8 400 A
3KC8 630 A
3KC8 800 A / 1000 A
3KC8 1250 A
3KC8 1600 A
3.1 Product description
The following figures show the different designs of the transfer switching equipment depicted
according to current rating using the example of the 3KC8 transfer switching equipment:
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19
Product information
3KC8 2000 A / 2500 A / 3200 A
3.1 Product description
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Product information
3.2
Product family
3.2.1
The product families 3KC4 and 3KC8 from 250 A to 3200 A
Product
family
Type
Designation
Current rating
Number
of poles
O
S
T
E
3.2 Product family
The Siemens product families 3KC4 and 3KC8 from 250 A to 3200 A encompass two types
of transfer switching equipment:
3KC4 Remotely operated transfer switch-
ing equipment
(RTSE)
3KC8 Automatic transfer switching
equipment
(ATSE)
RTSE: Remotely
perated Transfer
witching Equipment
ATSE: Automatic
ransfer Switching
quipment
250 … 3200 A 3; 4
250 … 3200 A 3; 4
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Product information
3.2.2
Use of 3KC4 and 3KC8 transfer switching equipment
Type
Product family
Application areas of transfer switching
Network/network
Network/generator
3.2.3
Properties of the 3KC4 and 3KC8 transfer switching equipment
3.2 Product family
The 3KC4 and 3KC8 transfer switching equipment is used to ensure a continuous supply of
power. The equipment enables reliable transfer between a main source and an alternative
source, thus a power supply is provided by means of an emergency source if the main
source is not available.
The three switch positions of the 3KC4 and 3KC8 series enable maximum stability of the
load power supply, in which case only minimum interruption to the power supply occurs.
Remotely operated transfer switching equipment
(RTSE)
Automatic transfer switching equipment (ATSE)
3KC4 ✓ ✓
3KC8 ✓ ✓
The 3KC4 and 3KC8 transfer switching equipment enables a continuous power supply to be
maintained. The main features are as follows:
● Reliable transfer between two sources with transfer through the OFF position
● Simple installation
● Transfer with open transition
● Minimal interruption in the power supply
● Three- and four-pole designs
● Current ratings from 250 A to 3200 A
● Transfer with the supplied handle
● Extensive accessories and spare parts
● Programming in just 5 steps (3KC8 only)
● Suitability for all load types includi ng ind uc tive loa ds (AC -33)
● Safe maintenance work thanks to locking with padlocks in position 0 (OFF)
● Control signals for starting/stopping the generator, as well as generator and switch device
tests on-load and off-load (3KC8 only)
22 Manual, 08/2017, L1V30368969104A-02
Product information
3.2.4
Application areas of the 3KC4 and 3KC8 transfer switching equipment
Service sector
Infrastructure
Industry
3.2 Product family
The 3KC4 and 3KC8 transfer switching equipment can be used in all areas where a
continuous power supply must be ensured.
● Public facilities
● Computing centers (data/server rooms)
● Shopping malls
● Airports
● Subways
● Production lines in continuous operation
● Engine rooms
● Pumps
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Product information
3.2 Product family
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4
Function
3KC4
3KC8
The 3KC4 and 3KC8 transfer switching equipment offers the following functions for
maintaining a power supply:
Remotely operated transfer switch ing (RTSE ) ✓ Automatic transfer switching (ATSE) - ✓
Power supply via 2 inputs (internal dual power supply) - ✓
Remote control (via inputs) ✓ ✓
Network / network applications ✓ ✓
Generator/generator applications ✓
Network / generator applicatio ns ✓
Self-configuration of voltage and frequen cy sett in gs - ✓
Monitoring of voltage and frequency - ✓
Monitoring of the phase sequence - ✓
Configuration using potentiometer and DIP switch - ✓
LED indicator for source availability - ✓
LED indicator for the switch positions - ✓
Test on-load (network/generator application) (via inputs) - ✓
Test off-load (network/generator application) (via inputs) - ✓
Connection for an optional external display - ✓
Setting of the OFF position with priority (via inputs) ✓ ✓
Indication of availability of the motor operator (via output) ✓ ✓
Switch position indication of the transfer switching equipment (via
outputs)
Inhibition of automatic mode (via inputs) - ✓
Inhibition of automatic return transfer to the prioritized sources (via
inputs).
Selection of the prioritized source (network/network application) (via
inputs)
Deactivation of the delay for stabilizing the alternative source (net-
work/generator application)
1)
Possible with the adequate controller
1)
-
1)
✓
✓ ✓
- ✓
- ✓
- ✓
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Functions
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5
5.1
Mounting position
Current rating
Mounting position
Motor operator
right
Motor operator
bottom
Motor operator
left
Motor operator
top
5.2
Installing the 3KC4 and 3KC8 transfer switching equipment
Note
The following content is described in this chapter:
● Mounting positions for the 3KC4 and 3KC8 transfer switching equipment
● Installation of the 3KC4 and 3KC8 transfer switching equipment
250 … 630 A ✓ ✓ ✓ 800 … 3200 A ✓ - ✓ ✓
The 3KC4 transfer switching equipme nt is dep icted in t he foll owi ng inst a llati on ins t ruc tions .
The 3KC8 transfer switching equipment differs from the 3KC4 transfer switching equipment
in its additional electronic module, but it is installed in the same way as the 3KC4 transfer
switching equipment.
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27
Mounting
Installing the current ratings 250 A to 630 A
mm
250 A
400 A
630 A
3P
4P
3P
4P
3P
4P
5.2 Installing the 3KC4 and 3KC8 transfer switching equipment
Figure 5-1 Installing the current ratings 250 A to 630 A
The dimensions vary according to the current rating and the number of poles. They can be
found in the table below.
A 35 35 35 35 34 34
B 160 210 160 210 210 270
C 50 50 50 50 65 65
D 25 25 35 35 45 45
Proceed as follows to install the current ratings 250 A to 630 A:
1. Mount the transfer switching equipment with four bolts in the desired position as shown in
the figure (see also the section titled Mounting position (Page 27)).
2. Fasten the holder for the handle on the transfer switching equipment, and insert the
handle into the holder.
The handle and its holder are included in the scope of supply. The bolts are not included with
the 3KC automatic transfer equipment.
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Mounting
Installing the current ratings 800 A to 3200 A
mm
800 A
1000 A
1250 A
1600 A
2000 A
2500
3200 A
3P
4P
3P
4P
3P
4P
3P
4P
3P
4P
3P
4P
3P
4P
5.2 Installing the 3KC4 and 3KC8 transfer switching equipment
Proceed as follows to install the 3KC4 and 3KC8 transfer switching equipment of current
ratings 800 A to 3200 A:
Figure 5-2 Installing the current ratings 800 A to 3200 A
The dimensions vary according to the current rating and the number of poles. They can be
found in the table below.
A 255 335 255 335 255 335 347 467 347 467 347 467 347 467
B 80 80 80 80 80 80 120 120 120 120 120 120 120 120
The installation steps are identical to those for installing the current ratings 250 A to 630 A,
see above.
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29
Mounting
5.3
Dimensions of the cover frame for door cut-out
Note
Current ratings 250 A to 630 A
Current ratings 800 A to 3200 A
5.3 Dimensions of the cover frame for door cut-out
The following figures show the dimensions of the cover frame for door cut-out for the 3KC4
and 3KC8 transfer switching equipment.
On the 3KC8 transfer switching equipment there is an additional electronic module that
enables source monitoring.
Figure 5-3 Dimensions of the cover frame for door cutout 800 A to 3200 A
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