KAESER KCT blue T Series User manual

Operator manual
Reciprocating compressor
KCT blue T
No.: 902350 00E
Manufacturer:
KAESER KOMPRESSOREN SE
96410 Coburg • PO Box 2143 • GERMANY • Tel. [phone] • Fax [phone]
www.kaeser.com

Original instructions
/KKW/PDENT 2.10 en SBA-DENTAL-T-ANLAGE
20190503 092636

1 Regarding this document
1.1 Using this document ......................................................................................................... 1
1.2 Further documents ........................................................................................................... 1
1.3 Copyright .......................................................................................................................... 1
1.4 Symbols and labels .......................................................................................................... 1
1.4.1 Warnings ............................................................................................................. 1
1.4.2 Potential damage warnings ................................................................................ 2
1.4.3 Other alerts and their symbols ............................................................................ 2
2 Technical Specifications
2.1 Nameplate ........................................................................................................................ 4
2.2 Options ............................................................................................................................. 4
2.3 Weight .............................................................................................................................. 4
2.4 Compressor block ............................................................................................................ 5
2.5 Ambient conditions ........................................................................................................... 5
2.6 Ventilation ........................................................................................................................ 5
2.7 Pressure switch setting .................................................................................................... 6
2.8 Pressure ........................................................................................................................... 6
2.9 Noise emission [dB(A)] ..................................................................................................... 6
2.10 Motor power and speed ................................................................................................... 7
2.11 Electrical connection ........................................................................................................ 7
2.11.1 Alternating current .............................................................................................. 8
2.11.2 Three-phase power supply ................................................................................. 9
2.12 Network Conditions .......................................................................................................... 10
2.12.1 Supply conditions at 230V / 1 / 50Hz .................................................................. 10
2.12.2 Supply conditions at 400V / 3 / 50Hz .................................................................. 11
2.13 Tightening torques for screws/ nuts ................................................................................. 11
3 Safety and Responsibility
3.1 Basic instructions ............................................................................................................. 12
3.2 Specified use .................................................................................................................... 12
3.3 Improper use .................................................................................................................... 12
3.4 User's responsibilities ....................................................................................................... 13
3.4.1 Observe statutory and universally accepted regulations .................................... 13
3.4.2 Determining personnel ........................................................................................ 13
3.4.3 Complying with inspection schedules and accident prevention regulations ....... 13
3.5 Dangers ............................................................................................................................ 14
3.5.1 Safely dealing with sources of danger ................................................................ 14
3.5.2 Safe machine operation ...................................................................................... 17
3.5.3 Organisational Measures .................................................................................... 19
3.5.4 Danger Areas ...................................................................................................... 19
3.6 Safety devices .................................................................................................................. 19
3.7 Safety signs ...................................................................................................................... 19
3.8 Emergencies .................................................................................................................... 21
3.8.1 Correct actions in the event of a fire ................................................................... 21
3.9 Warranty ........................................................................................................................... 22
3.10 Environment protection .................................................................................................... 22
4 Design and Function
4.1 Machine overview ............................................................................................................ 23
4.1.1 Machine .............................................................................................................. 23
4.1.2 Compressed air dryer ......................................................................................... 24
4.2 Operating points and control modes ................................................................................ 25
4.2.1 Machine operating points .................................................................................... 25
4.2.2 Control modes .................................................................................................... 25
4.3 Safety devices .................................................................................................................. 26
Contents
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T i

4.4 Accessories ...................................................................................................................... 26
4.4.1 Sound enclosure ................................................................................................. 26
5 Installation and Operating Conditions
5.1 Ensuring safety ................................................................................................................ 27
5.2 Installation conditions ....................................................................................................... 27
5.2.1 Determining location and clearances .................................................................. 27
5.2.2 Ensuring the machine room ventilation ............................................................... 28
5.2.3 Prevention of thermal problems .......................................................................... 29
5.2.4 Operation in a compressed air network .............................................................. 29
6 Installation
6.1 Ensuring safety ................................................................................................................ 30
6.2 Reporting Transport Damage ........................................................................................... 31
6.3 Fitting the rubber pads ..................................................................................................... 31
6.4 Connecting the machine to the compressed air network ................................................. 31
6.5 Connecting the machine to the power supply .................................................................. 32
6.6 Sound enclosure retrofit ................................................................................................... 32
6.6.1 Dismantling the sound enclosure ........................................................................ 33
6.6.2 Fitting the sound enclosure ................................................................................. 33
7 Initial Start-up
7.1 Ensuring safety ................................................................................................................ 35
7.2 Instructions to be observed before any commissioning ................................................... 36
7.3 Checking installation and operating conditions ................................................................ 36
7.4 Motor protection ............................................................................................................... 36
7.4.1 Setting the overload protection for three-phase motors ..................................... 36
7.4.2 Resetting the motor overload protection switch for single-phase motors ........... 37
7.5 Checking direction of rotation (3-phase machines only) .................................................. 37
7.6 Starting the machine for the first time .............................................................................. 38
8 Operation
8.1 Switching on and off ......................................................................................................... 39
8.2 Operating hours counter .................................................................................................. 40
9 Fault Recognition and Rectification
9.1 Basic instructions ............................................................................................................. 41
9.2 Faults ............................................................................................................................... 41
10 Maintenance
10.1 Ensuring safety ................................................................................................................ 43
10.2 Maintenance schedule ..................................................................................................... 44
10.2.1 Document maintenance work ............................................................................. 44
10.2.2 Regular maintenance tasks ................................................................................ 44
10.2.3 Regular maintenance tasks ................................................................................ 44
10.3 Maintaining the air cooler or fan cowl ............................................................................... 45
10.3.1 Cleaning the air cooler or fan cowl ..................................................................... 46
10.4 Air filter maintenance ....................................................................................................... 46
10.5 Filter mat maintenance ..................................................................................................... 47
10.6 Drive motor maintenance ................................................................................................. 47
10.7 Checking the pressure relief valve ................................................................................... 47
10.8 Air receiver maintenance ................................................................................................. 48
10.9 Venting the machine (de-pressurising) ............................................................................ 48
10.10 Maintaining the check valve ............................................................................................. 49
10.11 Cylinder head and valves ................................................................................................. 50
10.12 Documenting maintenance and service work .................................................................. 51
Contents
ii
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

11 Spares, Operating Materials, Service
11.1 Note the nameplate .......................................................................................................... 52
11.2 Ordering replacement parts ............................................................................................. 52
11.3 KAESER AIR SERVICE ................................................................................................... 52
11.4 Replacement parts for service and repair ........................................................................ 53
12 Decommissioning, Storage and Transport
12.1 De-commissioning ............................................................................................................ 54
12.2 Packing ............................................................................................................................ 54
12.3 Storage ............................................................................................................................. 54
12.4 Transport .......................................................................................................................... 55
12.4.1 Safety .................................................................................................................. 55
12.4.2 Transporting with a forklift truck .......................................................................... 55
12.5 Disposal ........................................................................................................................... 55
13 Annex
13.1 Pipeline and instrument flow diagram (P&I diagram) ....................................................... 56
13.2 Dimensional drawing ........................................................................................................ 59
13.3 Electrical diagram ............................................................................................................. 70
13.3.1 Electrical diagram 1 of 3 ..................................................................................... 70
13.3.2 Electrical diagram 2 of 3 ..................................................................................... 77
13.3.3 Electrical diagram 3 of 3 ..................................................................................... 85
Contents
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T iii

Contents
iv
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

Fig. 1 Location of safety signs .............................................................................................................. 20
Fig. 2 Machine layout ........................................................................................................................... 23
Fig. 3 Compressed air drying ............................................................................................................... 24
Fig. 4 Recommended machine placement and dimensions [mm] ........................................................ 28
Fig. 5 Fitting the rubber pads ............................................................................................................... 31
Fig. 6 Air connection ............................................................................................................................. 31
Fig. 7 Fitting the sound enclosure ........................................................................................................ 33
Fig. 8 Motor overload protection switch ................................................................................................ 37
Fig. 9 Checking the direction of rotation ............................................................................................... 38
Fig. 10 Switching on and off ................................................................................................................... 39
Fig. 11 Operating hours counter ............................................................................................................. 40
Fig. 12 Cleaning the air cooler or fan cowl ............................................................................................. 45
Fig. 13 Air filter maintenance .................................................................................................................. 46
Fig. 14 Filter mat maintenance ............................................................................................................... 47
Fig. 15 Condensate shut-off valve .......................................................................................................... 48
Fig. 16 Venting the machine ................................................................................................................... 49
Fig. 17 Cleaning the check valve ........................................................................................................... 50
Fig. 18 Transporting with a forklift truck ................................................................................................. 55
List of Illustrations
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T v

List of Illustrations
vi
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

Tab. 1 Danger levels and their definition (personal injury) .................................................................... 1
Tab. 2 Danger levels and their definition (damage to property) ............................................................ 2
Tab. 3 Nameplate .................................................................................................................................. 4
Tab. 4 Options ....................................................................................................................................... 4
Tab. 5 Weight ........................................................................................................................................ 4
Tab. 6 Compressor block ...................................................................................................................... 5
Tab. 7 Ambient conditions ..................................................................................................................... 5
Tab. 8 Ventilation overview ................................................................................................................... 5
Tab. 9 Pressure switch setting .............................................................................................................. 6
Tab. 10 Pressure specifications .............................................................................................................. 6
Tab. 11 Noise emission [dB(A)] ............................................................................................................... 6
Tab. 12 Power and speed (AC design) ................................................................................................... 7
Tab. 13 Power and speed (Three-phase current design) ........................................................................ 7
Tab. 14 Supply details 230V / 1 / 50Hz ................................................................................................... 8
Tab. 15 Connection data 115V / 1 / 60Hz ............................................................................................... 9
Tab. 16 Connection data 208-230V / 1 / 60Hz ........................................................................................ 9
Tab. 17 Supply details 400V / 3 / 50Hz ................................................................................................... 10
Tab. 18 Network impedance .................................................................................................................... 10
Tab. 19 Network impedance .................................................................................................................... 11
Tab. 20 Inspection intervals according to Ordinance on Industrial Health and Safety ............................ 14
Tab. 21 Danger Areas ............................................................................................................................. 19
Tab. 22 Safety signs ................................................................................................................................ 20
Tab. 23 Re-commissioning after storage ................................................................................................. 36
Tab. 24 Check list of installation conditions ............................................................................................. 36
Tab. 25 Marking ....................................................................................................................................... 39
Tab. 26 Faults and troubleshooting ......................................................................................................... 41
Tab. 27 Regular maintenance tasks ........................................................................................................ 44
Tab. 28 Regular maintenance tasks ........................................................................................................ 45
Tab. 29 Logged maintenance tasks ........................................................................................................ 51
Tab. 30 Compressed air dryer replacement parts ................................................................................... 52
Tab. 31 Machine replacement parts ........................................................................................................ 52
List of Tables
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T vii

List of Tables
viii
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

1 Regarding this document
1.1 Using this document
The operating manual is a component of the product. It describes the machine as it was at the time
of first delivery after manufacture.
➤ Keep the operating manual in a safe place throughout the life of the machine.
➤ Supply any successive owner or user with this operating manual.
➤ Please insert any amendment or revision of the operating manual sent to you.
➤ Enter details from the machine nameplate and individual items of equipment in the table in
chapter 2.
1.2 Further documents
Included with this operating manual are additional documents intended to assist in the safe opera‐
tion of the machine:
■ Certificate of acceptance/operating instructions for the pressure vessel
■ Declaration of Conformity in accordance with applicable directives.
Missing documents can be requested from KAESER.
➤ Make sure all documents are complete and observe the instructions contained in them.
➤ Make sure you give the data from the nameplate when ordering documents.
1.3 Copyright
This operating manual is protected by copyright. Any queries regarding the use or duplication of
this documentation should be referred to KAESER. Correct use of information will be fully suppor‐
ted.
1.4 Symbols and labels
➤ Please note the symbols and labels used in this document.
1.4.1 Warnings
Warning notices indicate dangers that may result in injury when disregarded.
Warning notices indicate three levels of danger identified by the corresponding signal word:
Signal term Meaning Consequences of non-compliance
DANGER Warns of an imminent threat of danger Will result in death or severe injury
WARNING Warns of possible danger May result in death or severe injury
CAUTION Warns of a potentially dangerous situation May result in a moderate physical injury
Tab. 1 Danger levels and their definition (personal injury)
Warning notices preceding a chapter apply to the entire chapter, including all sub-sections.
Example:
1 Regarding this document
1.1 Using this document
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T 1

DANGER
These show the kind of danger and its source.
The possible consequences of ignoring a warning are shown here.
If you ignore the warning notice, the "DANGER" signal word indicates a lethal or severe in‐
jury will occur.
➤ The measures required to protect yourself from danger are shown here.
Warning notes referring to a sub-section or the subsequent action are integrated into the procedure
and numbered as an action.
Example:
1. WARNING!
These show the kind of danger and its source.
The possible consequences of ignoring a warning are shown here.
If you ignore the warning notice, the "WARNING" signal word indicates that a lethal or severe
injury may occur.
➤ The measures required to protect yourself from danger are shown here.
2. Always read and comply with warning instructions.
1.4.2 Potential damage warnings
Contrary to the warnings shown above, damage warnings do not indicate a potential personal in‐
jury.
Warning notices for damages are identified by their signal term.
Signal term Meaning Consequences of non-compliance
NOTE Warns of a potentially dangerous situation Damage to property is possible
Tab. 2 Danger levels and their definition (damage to property)
Example:
NOTICE
These show the kind of danger and its source.
Potential effects when ignoring the warning are indicated here.
➤ The protective measures against the damages are shown here.
➤ Carefully read and fully comply with warnings against damages.
1.4.3 Other alerts and their symbols
This symbol identifies particularly important information.
1 Regarding this document
1.4 Symbols and labels
2
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

Material Here you will find details on special tools, operating materials or spare parts.
Precondition Here you will find conditional requirements necessary to carry out the task.
Here conditions relevant to safety are named that will help you to avoid dangerous situations.
➤ This symbol denotes lists of actions comprising one stage of a task.
Operating instructions with several steps are numbered in the sequence of the operating steps.
Information relating to one option only are marked with an option code (e.g., H1 indicates that
this section applies only to machines with screw-in machine feet).
Information referring to potential problems are identified by a question mark.
The cause is named in the help text ...
➤ ... as is a solution.
This symbol identifies important information or measures regarding the protection of the envi‐
ronment.
Further information Further subjects are introduced here.
1 Regarding this document
1.4 Symbols and labels
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T 3
Option H1

2 Technical Specifications
2.1 Nameplate
The machine's nameplate provides the model designation and important technical information.
➤ Enter here the nameplate data as a reference:
Characteristic Value
Reciprocating compressor
Material No.
Serial No.
Year of manufacture
Maximum working pressure
Flow rate
Electrical connection
Synchronous speed
Rated power
Ambient temperature
Tab. 3 Nameplate
2.2 Options
The table contains a list of possible options.
Option Available?
Operating hours counter Machine-dependent, only available with
KCT blue 230-65 T.
Tab. 4 Options
2.3 Weight
The values shown are maximum values. The actual weight of the machine is dependent on the
equipment fitted.
Compressor type Air receiver size [l] Weight [kg]
KCT blue 110-24 T 24 51 / 931)
KCT blue 230-24 T 24 75 / 1171)
KCT blue 230-65 T 65 90 / 1501)
KCT blue 420-65 T 65 90 / 1501)
KCT blue 420-90 T 90 151 / —1)
1) Machine with sound enclosure
Tab. 5 Weight
2 Technical Specifications
2.1 Nameplate
4
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

2.4 Compressor block
The flow rate depends on the final pressure relating to the intake conditions (pressure and temper‐
ature).
Flow rate: The amount of compressed air delivered by the compressor per time unit, measured
e. g. in l/min
Compressor type Compressor
block
Flow rate 1) at
5 bar [l/min]
Usable flow rate
1) at 5 bar [l/min]
Number of cylin‐
ders
KCT blue 110-24 T KCT110 65 52 1
KCT blue 230-24 T KCT230 158 135 2
KCT blue 230-65 T KCT230 1402) 1092) 2
KCT blue 420-65 T KCT420 262 225 2
KCT blue 420-90 T 2x KCT420 524 450 2x 2
1) Flow rate according according to ISO 1217:2009, Annex C
2) Flow rate at 7 bar [l/ min.]
Tab. 6 Compressor block
2.5 Ambient conditions
Installation
Maximum eleva‐
tion AMSL 1) [m]
1000
Permissible ambient tem‐
perature [°C]
5 – 35
1) Higher altitudes are permissible only after consultation with the manufacturer.
Tab. 7 Ambient conditions
2.6 Ventilation
The values given are minimum guide values.
Compressor type Cooling air inlet opening1) [m2] Exhaust fan 2) [m3/h]
KCT blue 110-24 T 0.2 225
KCT blue 230-24 T 0.2 660
KCT blue 230-65 T 0.2 660
KCT blue 420-65 T 0.2 660
KCT blue 420-90 T 0.2 1320
1) see chapter 5, Fig. 4
2) Forced ventilation: Required air volume for exhaust fan at static compression 100 Pa (machine
in enclosed space without ducts and ΔT≙10 K)
Tab. 8 Ventilation overview
2 Technical Specifications
2.4 Compressor block
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T 5

2.7 Pressure switch setting
Specified pressures are factory set.
Customer-specific settings may differ.
Characteristic Value
Cut-in pressure [bar] 5.5 7.51)
Cut-out pressure [bar] 7.0 9.01)
Maximum
pressure differential1) at
20%2) [bar]
1.6 2.01)
Pressure, air receiver
[bar]
8101)
1) KCT blue 230-65 T
2) The air receiver is permanently in a pressure fluctuation range of 20%.
Tab. 9 Pressure switch setting
2.8 Pressure
Characteristic Value
Maximum
working pressure [bar]
791)
Safety valve
actuating pressure [bar]
8.0 10.01)
1) KCT blue 230-65 T
Tab. 10 Pressure specifications
2.9 Noise emission [dB(A)]
Compressor type Sound pressure level [dB(A)]
KCT blue 110-24 T 65 / 521)
KCT blue 230-24 T 71 / 621)
KCT blue 230-65 T 71 / 621)
KCT blue 420-65 T 70 / 591)
KCT blue 420-90 T 73 / —1)
1) Machine with sound enclosure
Noise pressure level in operation at maximum working gauge pressure as per ISO 2151 and the
basic standard ISO 9614-2, Operation at maximum working pressure, uncertainty: ±3 dB(A)
Tab. 11 Noise emission [dB(A)]
2 Technical Specifications
2.7 Pressure switch setting
6
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

2.10 Motor power and speed
➤ Read off the motor protection class from the motor nameplate and enter in the table:
AC version
Compressor type Compres‐
sor block
Rated power [kW] Synchronous rated
speed [rpm]
Protection
class
50 Hz 60 Hz 50 Hz 60 Hz
KCT blue 110-24 T KCT110 0.75 1500 1800
KCT blue 230-24 T KCT230 1.5 1500 1800
KCT blue 230-65 T KCT230 1.5 1500 1800
KCT blue 420-65 T KCT420 2.2 1500 1800
KCT blue 420-90 T 2x
KCT420
2x 2.2 1500 1800
Tab. 12 Power and speed (AC design)
➤ Read off the motor protection class from the motor nameplate and enter in the table:
Three-phase current design
Compressor type Compres‐
sor block
Rated power [kW] Synchronous rated
speed [rpm]
Protection
class
50 Hz 60 Hz 50 Hz 60 Hz
KCT blue 110-24 T KCT110 — — —
KCT blue 230-24 T KCT230 2.2 1500 1800
KCT blue 230-65 T KCT230 2.2 1500 1800
KCT blue 420-65 T KCT420 2.2 1500 1800
KCT blue 420-90 T 2x
KCT420
2x 2.2 1500 1800
Tab. 13 Power and speed (Three-phase current design)
2.11 Electrical connection
Basic requirements
The machine is designed in accordance with the conditions for an electrical power supply specified
in EN 60204-1 (IEC 60204-1) section 4.3.
If no other conditions are specified by the operator, the thresholds described in this standard must
be adhered to.
It is recommended that the user and the supplier reach an agreement on the basis of EN 60204-1,
Annex B.
Check and adjust for other deployment conditions before commissioning.
If the machine is supplied with a mains cable and a plug, the power socket may be fused at
the nominal current of the plug device.
2 Technical Specifications
2.10 Motor power and speed
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T 7

2.11.1 Alternating current
The machine requires an alternating current power supply.
The machine may only be operated from an earthed alternating current supply network.
Further information When connecting to a European 230V/1/50Hz rated voltage power supply network you must also
observe the requirements in chapter 2.12.
For motors with a rated power of 2.2 kW, we recommend the use of a circuit breaker with a C or D
tripping characteristic as per DIN EN 60898-1.
See wiring diagram in 13.3.
2.11.1.1 Electric connection data
The following supply cable conductor cross-sections and fusing (slow-blow class gG) are selected
according to German DIN VDE 0100 Part 430 (IEC 60364-4-43) and DIN VDE 0298-4:2013-06
standards for these conditions:
■ multi-core copper conductors with an operating temperature up to 70 °C
■ Cable length <20 m
■ for ambient temperature of 30 °C
■ Wiring type C: without cable contact
■ Current carrying capacity of conduits: Table 3 Column 11
(European Harmonisation Directive HD 60364-5-52: 2011)
■ Cable bundling: Table 21
─ Single layer on wall or floor
─ Spacing ≥ outside diameter
➤ For other application conditions, check and determine the supply cross-sections accord‐
ing to DIN VDE 0100 and DIN VDE 0298-4:2013-06 or the local energy provider.
Other application conditions would include, for example:
■ Higher ambient temperature
■ Other cable installation method
■ Other cable bundling
■ Cable length >20 m
Further information Motor voltage tolerances to DIN EN 60034-1.
Rated voltage: 230V / 1 / 50Hz
Compressor type Backup fuse [A] Supply line [mm2] Power consumption 1)
[A]
KCT blue 110-24 T 10 3 x 1.5 4.8
KCT blue 230-24 T 16 3 x 1.5 8.4
KCT blue 230-65 T 16 3 x 1.5 8.4
KCT blue 420-65 T 16 3 x 1.5 14.3
KCT blue 420-90 T 2x 16 2x (3 x 1.5) 2x 14.3
1) power consumption of machine at maximum pressure
Tab. 14 Supply details 230V / 1 / 50Hz
2 Technical Specifications
2.11 Electrical connection
8
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E

Rated voltage: 115V / 1 / 60Hz
Compressor type Backup fuse [A] Supply line [mm2]Rated current, motor
[A]
KCT blue 110-24 T 16 3 x 1.5 9.7
Tab. 15 Connection data 115V / 1 / 60Hz
Rated voltage: 208–230V / 1 / 60Hz
Compressor type Backup fuse [A] Supply line [mm2]Rated current, motor
[A]
KCT blue 110-24 T 10 3 x 1.5 5.3
KCT blue 230-24 T 16 3 x 1.5 10
KCT blue 230-65 T — — —
KCT blue 420-65 T 16 3 x 1.5 14.5
KCT blue 420-90 T 2x 16 2x (3 x 1.5) 2x 14.5
Tab. 16 Connection data 208-230V / 1 / 60Hz
2.11.2 Three-phase power supply
For electrical connection of the machine, a symmetric three-phase supply is necessary.
In a symmetrical three-phase supply, the phase angles and voltages are equal.
This machine may only be supplied from an earthed TN or TT three-phase supply in which the
neutral point is earthed.
Connection to an IT supply is not permitted without taking further measures (earth leak detection,
etc.).
Further information When connecting to a European 400 V/3/50 Hz rated voltage the requirements in chapter 2.12 are
also to be observed.
See electrical diagram in 13.3.
2.11.2.1 Electric connection data
The following supply cable conductor cross sections and fusing (slow-blow class gG) are selected
according to German DIN VDE 0100 Part 430 (IEC 60364-4-43) and DIN VDE 0298-4:2013-06
standards for these conditions:
■ Multi-core copper conductors at an operating temperature up to 70 °C
■ Cable length <50 m
■ for ambient temperature of 30 °C
■ Wiring type C, without cable contact
■ Current carrying capacity: Table 3, column 11
(European Harmonisation Directive HD 60364-5-52: 2011)
■ Cable bundling: Table 21
─ Single layer on wall or floor
─ Spacing ≥ outside diameter
2 Technical Specifications
2.11 Electrical connection
No.: 902350 00E
Operator manual Reciprocating compressor
KCT blue T 9

➤ For other application conditions, check and determine the supply cross-sections accord‐
ing to DIN VDE 0100 and DIN VDE 0298-4:2013-06 or the local energy provider.
Other application conditions would include, for example:
■ Higher ambient temperature
■ Other cable installation method
■ Other cable bundling
■ Cable length >50 m
Further information Motor voltage tolerances to DIN EN 60034-1.
Rated voltage: 400V / 3 / 50Hz
Compressor type Backup fuse [A] Supply line [mm2] Power consumption 1)
[A]
KCT blue 110-24 T — — —
KCT blue 230-24 T 10 4 x 1.5 3.3
KCT blue 230-65 T 10 4 x 1.5 3.3
KCT blue 420-65 T 10 4 x 1.5 5.1
KCT blue 420-90 T 16 4 x 2.5 10.2
1) power consumption of machine at maximum pressure
Tab. 17 Supply details 400V / 3 / 50Hz
2.12 Network Conditions
The mains conditions apply to machines connected to public mains supplies with the following
characteristics:
■ Mains frequency: 50Hz
■ Rated voltage between exterior and neutral lines 220V ... 250V
■ Rated voltage between the external lines 380V ... 430V
They do not apply to private power supplies within industrial areas isolated from the public
mains.
The machines listed in the table are intended for operation with a public power supply with a
network impedance at the transfer point (house connection) of maximum Zmax. [Ohm].
The operator must ensure that the machines are only connected to a network that meets these
requirements. If necessary, ask the local electricity utility for the mains conditions.
2.12.1 Supply conditions at 230V / 1 / 50Hz
Compressor model Maximum permissible motor starts
1) [1/h]
Highest permissible System impe‐
dance2) Zmax. [Ω]
KCT blue 110-24 T 20 0.339
KCT blue 230-24 T 20 0.132
KCT blue 230-65 T 20 0.132
1) Exceeding the maximum permissible starts must be discussed with the manufacturer.
2) The data are relative to the sum of impedances in external and neutral lines.
2 Technical Specifications
2.12 Network Conditions
10
Operator manual Reciprocating compressor
KCT blue T No.: 902350 00E