Kohler PW 5000/TP User manual

User Manual
KOHLER PW 5000/TP
Three-phase uninterruptible power supply
(10–50 kVA)
Parallelable up to 400 kVA / 360 kW

© 2023 Kohler Uninterruptible Power 29/11/23
Document Control
Useful Contacts
All product, product specifications and data are subject to change without notice to improve reliability, function, design or otherwise.
Kohler Uninterruptible Power has taken every precaution to produce an accurate, complete and easy to understand specification
document and will assume no responsibility nor liability for direct, indirect or accidental personal or material damage due to any
misinterpretation of, or accidental errors, in this manual.
© 2023 Kohler Uninterruptible Power
This manual may not be copied or reproduced without written permission of Kohler Uninterruptible Power
ISSUE DATE REVISION SUMMARY
TS_820_01 29/11/2023 Rebranding to KUP International Version
UK
www.kohler-ups.co.uk Kohler Uninterruptible Power web site
[e-mail] Service department – booking service, fault reporting etc.
[e-mail] Technical queries
[e-mail] Hardware sales
[e-mail] Extended warranty agreements etc
IRELAND
www.kohler-ups.ie Kohler Uninterruptible Power web site
[e-mail] Service department, technical queries, hardware sales and extended
warranty agreements
SINGAPORE
www.kohler-ups.sg Kohler Uninterruptible Power web site
[e-mail] Hardware sales
[e-mail] Contract customer support, maintenance contracts renewals

Document Control 1
Useful Contacts 1
1: Safety 1
1.1 Description of symbols used in this manual 1
1.2 User precautions 1
2: General Description 2
2.1 Reliability and Quality Standards 2
2.2 Kohler PW5000/TP Model Range 2
2.2.1 Single/Multi-cabinet configurations 3
2.3 Advanced Design Features 3
2.3.1 Input booster technology 3
2.3.2 Flexible battery management 3
2.3.3 Decentralized Parallel Architecture (DPA) 3
2.4 Warranty 4
2.5 Extended Warranty 4
2.6 Additional Service/Maintenance Support 5
3: Installation 6
3.1 Introduction 6
3.2 Receipt of the UPS 6
3.2.1 Site transportation 6
3.2.2 Unpacking the UPS 7
3.2.3 Batteries 7
3.3 Storage 8
3.3.1 UPS storage 8
3.3.2 Battery 8
3.4 Positioning 8
3.4.1 Planning the installation 8
3.5 UPS Power Cabling 10
3.5.1 General requirements (preparation and planning) 10
3.6 Connecting the UPS input supply 18
3.6.1 Safety notes 18
3.6.2 Preparation for the input cabling 18
3.6.3 Connecting the UPS input power cables 18
3.7 Connecting the UPS output 19
3.7.1 Safety notes 19
3.7.2 Preparation for the output cabling 19
3.7.3 Connecting the UPS output cables 20
3.8 Battery connections 24
3.8.1 Remote battery enclosures 24
3.8.2 Connecting the external battery enclosure 24
3.9 Multi-module control cabling and configuration 26
3.9.1 Connecting the parallel communication cables (Bus-lines) 26
3.10 Module interfacing facilities 27
3.10.1 JD1 Smart Port – Serial RS 232 and USB Port 27
3.10.2 X1 Dry Port (volt-free contacts) 28
3.10.3 JR1 / RS485 INTERFACE FOR MULTIDROP 28
3.10.4 X2 Dry Port – Optional Output Interfaces Terminal Block (X2) 29
4: Operation 30
4.1 Commissioning 30
4.2 Control Panel 30
4.2.1 Power Management Display (PMD) 30
4.2.2 Mimic LED indicators 31
4.2.3 Operator keys 31
4.3 Description of the LCD display 32
4.3.1 Status screens 32
4.3.2 Main menu screen 33

4.3.3 Event log menu screen 33
4.3.4 Measurements menu screen 33
4.3.5 Commands menu screen 35
4.3.6 UPS Data menu screen 35
4.3.7 Set-up User menu screen 36
4.3.8 Set-Up Service menu screen 36
4.4 Operating Modes 37
4.4.1 On-Line (Inverter) mode 37
4.4.2 Bypass (Line-Interactive) mode 37
4.4.3 Maintenance Bypass Mode 38
4.4.4 Multi-module configuration concept 39
4.5 Operating Instructions 40
4.5.1 Transfer to Maintenance Bypass Mode 40
4.5.2 Starting the UPS system from the Maintenance Bypass 42
4.5.3 Complete system shutdown 44
4.5.4 Individual module start/stop procedure 45
5: Maintenance 47
5.1 Introduction 47
5.2 System calibration 47
5.3 User responsibilities 47
5.4 Routine maintenance 47
5.5 Battery Testing 48
6: Troubleshooting 49
6.1 Alarms 49
6.2 Menu, Commands, Event Log, Measurements, 50
6.2.1 Event Log Screen 50
6.2.2 Fault Identification and Rectification Messages and Alarms 50
6.3 Contacting Service 51
7: Options 52
7.1 Introduction 52
7.2 Remote Emergency Stop facilities 52
7.3 Generator ON facilities 53
7.4 Temperature sensor for temperature-dependent battery charging 54
7.5 UPS Monitoring and automated control software 55
7.5.1 The importance of UPS management 55
7.5.2 SNMP monitoring software 55
7.5.3 WAVEMON UPS monitoring and control software 55
7.5.4 PowerREPORTER™ management software 56
8: Specifications 58
8.1 Mechanical 58
8.2 Input Characteristics 59
8.3 Output Characteristics 59
8.4 Battery Characteristics 60
8.5 Environmental 60
8.6 Heat Dissipation With Non-Linear Loads 61
8.7 Standards 61
8.8 Communication Options 61
8.9 Fuses & Cables Quick Reference 62

1© 2023 Kohler Uninterruptible Power 29/11/23
1Safety
1.1 Description of symbols used in this manual
1.2 User precautions
WARNING: The warning symbol is used where there is danger of an electrical shock, equipment damage or
personal-injury.
CAUTION: The caution symbol is used to highlight important information to avoid possible equipment
malfunction or damage.
WARNING: Keep this manual with the UPS for future reference.
WARNING: The UPS and peripheral equipment must be installed and commissioned by suitably qualified and
trained personnel who are aware of the potential shock hazards.
WARNING: Do not attempt to install this UPS system until you are satisfied that ALL the safety instructions and
hazard warnings contained in this manual are read and fully understood.
WARNING: High leakage current!
Ensure that the UPS has been correctly earthed before you connect the mains power supply!
WARNING: This UPS must not be started-up or put into use without having first been commissioned by a fully
trained engineer authorised by the manufacturer.
WARNING: All servicing must be performed by qualified personnel. Do not attempt to service the UPS yourself.
You run risk of exposure to dangerous voltages by opening or removing the UPS-covers! Kohler Uninterruptible
Power will assume no responsibility nor liability due to incorrect operation or manipulation of the UPS.
WARNING: The Kohler PW5000/TP is a Class A UPS product (according to BS EN 62040-2:2006). In a
domestic environment the UPS may cause radio interference. In such an environment the user may be required
to undertake additional measures.

© 2023 Kohler Uninterruptible Power 29/11/23 2
2General Description
2.1 Reliability and Quality Standards
Congratulations on your purchase of the Kohler PW5000/TP UPS.
The Kohler PW5000/TP UPS represents a completely new generation of mid-range, 3 phase UPS-Systems, incorporating
the latest technological developments in power engineering. It is an advanced double conversion UPS, VFI (Voltage and
Frequency Independent) topology that responds fully to both highest availability and environmentally friendly requirements
compliant with IEC 62040-3 (VFI-SS-111) standards. High reliability, upgrade ability, low operating costs and excellent
electrical performance are only some of the highlights of this innovative UPS solution.
Kohler Uninterruptible Power specialises in the design, building, installation and maintenance of Uninterruptible Power
Systems. This compact and powerful UPS is just one example of our wide range of state-of-the-art power protection
devices and will provide your critical equipment with a steady and reliable power supply for many years.
The criteria and methods which are used in the manufacture and maintenance of UPS systems are certified to
International Standard ISO 9001/EN 29001 and ISO 14001. A full UPS Specification is given in Chapter 8 this manual.
2.2 Kohler PW5000/TP Model Range
The Kohler PW5000/TP UPS range covers 10, 15, 20, 25, 30, 40 and 50kVA models, in three different sized cabinets, that
can be employed in a Single or Multi-Module configuration.
Figure 2.1 Kohler PW5000/TP Cabinet details
Cabinet A
10kVA, 15kVA, 20kVA
(WxHxD = 345x720x710)
Cabinet B
10kVA, 15kVA, 20kVA, 25kVA
(WxHxD = 345x1045x710)
Cabinet C
25kVA, 30kVA, 40kVA, 50kVA
(WxHxD = 440x1420x910)

3© 2023 Kohler Uninterruptible Power 29/11/23
2: General Description
2.2.1 Single/Multi-cabinet configurations
The Kohler PW5000/TP UPS may be configured to operate as a single cabinet or several (up to 20) cabinets can be
connected in parallel to operate as a multi-module UPS system. A multi-module configuration is selected either to increase
the system’s total power capacity or to provide module redundancy. This manual describes the installation, configuration
and operation of both single and multi-module systems.
Note: Although the UPS single/multi configuration can be modified in the field it is generally specified on ordering so that
the module can be configured and fully tested in the factory prior to despatch.
2.3 Advanced Design Features
2.3.1 Input booster technology
The UPS module’s inbuilt advanced booster technology results in a perfect sinusoidal input power quality at 0.99 input
power factor with a harmonic content of 3% THD(i). This leads to a more reliable total system operation and savings in
generator and transformer sizing, as losses in the windings are minimised. It also means that traditional harmonic filters
are no longer required.
The high power factor presented by the UPS on the incoming mains supply minimises cabling and fusing costs due to the
resulting lack of reactive power consumption. This, together with the accompanying low harmonic currents, provide the
following benefits:
• No additional losses in wires and cables.
• No extra heating of transformers and generators.
• No over sizing of generators.
• No false circuit breaker tripping and malfunction.
• No erratic operation of computers, telecommunication, monitors, electronic test equipment etc.
• No resonance with power factor correction capacitors.
2.3.2 Flexible battery management
This equipment employs a flexible battery management which avoids premature deterioration of battery life by advanced
management of battery charging and preventive failure diagnostics.
The major benefits are:
• AC-ripple free battery charging due to a dc-dc charger separated from the rectifier and inverter.
• Wide range of number of battery blocks (22-50 blocks of 12V; depending on autonomy times).
• Wide UPS input voltage operating window extends the battery life due to fewer discharge cycles.
• Battery discharge protection caused by load jumps.
• Proactive battery protection from false manipulations and inadequate charging voltages.
• Proactive battery failure detection thanks to Advanced Battery Diagnosis (ABD) - Algorithm.
• User selectable battery tests.
• Optional temperature compensated charging to enhance battery life.
2.3.3 Decentralized Parallel Architecture (DPA)
The Kohler PW5000/TP system features DPA paralleling technology that provides n+x redundancy without introducing a
single-point-of-failure. The modules utilizing the DPA technology are completely autonomous by means of individual
power units, bypasses, CPUs, control panels and separate battery configuration.

2: General Description
© 2023 Kohler Uninterruptible Power 29/11/23 4
2.4 Warranty
The Kohler PW5000/TP UPS is supplied with a limited warranty that the UPS and its component parts are free from
defects in materials and workmanship for a period of one year from the date of original commissioning, or fifteen months
from the date of original delivery, whichever is the sooner. This warranty is the only warranty given and no other warranty,
express or implied, is provided.
This warranty is invalidated if the UPS is used without having first been commissioned by a fully trained and authorised
person. This warranty does not apply to any losses or damages caused by misuse, abuse, negligence, neglect,
unauthorised repair or modification, incorrect installation, inappropriate environment, accident, act of God or inappropriate
application.
If the UPS fails to conform to the above within the warranty period then Kohler Uninterruptible Power will, at its sole option,
repair or replace the UPS. All repaired or replaced parts will remain the property of Kohler Uninterruptible Power
As a general policy, Kohler Uninterruptible Power does not recommend the use of any of its products in life support
applications where failure or malfunction of the product can be reasonably expected to cause failure of the life support
device or to significantly affect it’s safety or effectiveness. Kohler Uninterruptible Power does not recommend the use of
any of its products in direct patient care. Kohler Uninterruptible Power will not knowingly sell its products for use in such
applications unless it receives in writing assurances satisfactory to Kohler Uninterruptible Power that the risks of injury or
damage have been minimized, the customer assumes all such risks and the liability of Kohler Uninterruptible Power is
adequately protected under the circumstances
2.5 Extended Warranty
The Standard Warranty may be enhanced by protecting the UPS with an Extended Warranty Agreement (maintenance
contract). An Extended Warranty Agreement enhances the standard warranty by providing:
• Regular preventative maintenance inspections
• Guaranteed speed of response to operational problems
• 24 hour telephone support
• Fully comprehensive (excluding batteries) cover
CAUTION: The UPS system may contain batteries which must be re-charged for a minimum of 24 hours every
six months to prevent deep-discharging. Batteries that have been, for whatever reason, deeply-discharged are
not covered by the warranty.

5© 2023 Kohler Uninterruptible Power 29/11/23
2: General Description
2.6 Additional Service/Maintenance Support
If you are interested in obtaining an extended warranty for your Kohler PW5000/TP, or require service/maintenance
support for any other UPS you may have, please contact Kohler Uninterruptible Power at the following address:
UK
www.kohler-ups.co.uk Kohler Uninterruptible Power web site
[e-mail] Service department – booking service, fault reporting etc.
[e-mail] Technical queries
[e-mail] Hardware sales
[e-mail] Extended warranty agreements etc
IRELAND
www.kohler-ups.ie Kohler Uninterruptible Power web site
[e-mail] Service department, technical queries, hardware sales and extended
warranty agreements
SINGAPORE
www.kohler-ups.sg Kohler Uninterruptible Power web site
[e-mail] Hardware sales
[e-mail] Contract customer support, maintenance contracts renewals

6© 2023 Kohler Uninterruptible Power 29/11/23
3Installation
3.1 Introduction
This chapter contains all the information necessary for the correct unpacking, positioning, cabling and installation of the
Kohler PW5000/TP UPS.
3.2 Receipt of the UPS
The UPS and accessories are delivered on a specifically designed pallet that is easy to move with a forklift or a pallet jack.
The packing container protects the UPS from mechanical and environmental damage. This protection is further increased
by wrapping the Kohler PW5000/TP UPS with a plastic sheet.
Upon receiving the UPS, carefully examine the packing container and the UPS for any sign of physical damage. The
outside 'Tip&Tel' (“FRAGILE” and “ARROW”) indicator should be intact if the equipment has been transported in an
upright position. In case of rupture (or if they are suspect) inform the carrier and Kohler Uninterruptible Power immediately.
Ensure that the received UPS corresponds to the description indicated in the delivery note.
3.2.1 Site transportation
If you transport the UPS equipment after it has been off-loaded (for example, for storage or moving to a different
installation location) please observe the following precautions.
WARNING: All the operations described in this section must be supervised by an authorised electricians or
suitably qualified person.
WARNING: Kohler Uninterruptible Power will take no responsibility for any personal or material damage
caused by incorrect cabling or operations, or activities which are not carried out in strict accordance with the
instructions contained in this manual.
CAUTION: When off loading the UPS always keep it in an upright position.
Do not drop the equipment.
Do not stack the pallets due to the high-energy batteries involved and the heavy weight.
CAUTION: Visible transport damages must be notified to the carrier immediately after receipt!
Other claims for shipping damage must also be filed immediately and the carrier must be informed within 7
days of receipt of the equipment.
Packing materials should be stored for further investigation.
CAUTION: Potential dangers:
– Do not tilt the UPS or Battery Cabinet by more than 10° as it might damage the equipment.
If the equipment has been tilted do not connect it to the mains electricity supply.
– The weight of the UPS system could cause serious injuries to personnel or other equipment in the
surrounding area.
CAUTION: Storage:
– The UPS should be stored in the original packing and shipping carton.
– The recommended storing temperature for the UPS system and batteries is between +5°C and +40°C.
– The UPS system and the battery sets must be protected from humidity < 90% RH (non-condensing).

3: Installation
© 2023 Kohler Uninterruptible Power 29/11/23 7
3.2.2 Unpacking the UPS
The cabinets are attached to a shipping pallet, wrapped in polythene and protected by a sturdy cardboard covering.
1. Ensure that the floor surface is level and
suitable for wheeling and taking the heavy
weight.
2. Remove cardboard packing container by
pulling it upwards. The packaging will
contain a wooden ramp.
3. Remove the protective plastic cover and
any other packing around the UPS.
4. Remove the fixings securing the UPS to the
pallet.
5. Position the enclosed ramp (‘A’ & ‘B’
cabinets) at the rear side of the cabinet and
roll the UPS down the ramp.
6. Retain the packaging materials for future
shipment of the UPS.
7. Examine the UPS for any sign of damage
and notify your carrier or supplier
immediately if damage is apparent.
Checking the nameplate
Before proceeding, check that the technical specifications on the nameplate, situated on the rear of the UPS or behind the
front internal door, corresponds to the purchased material mentioned in the goods delivery note.
3.2.3 Batteries
The batteries connected to the UPS are usually of a sealed, maintenance-free design. The batteries can be mounted
either within the UPS, in an external battery cabinet, or on a bespoke battery rack, depending on the required autonomy
time and paralleling arrangement. For optimum reliability a separate battery string should be connected to each individual
UPS. The batteries are usually shipped separately and fitted by a manufacturer-approved engineer when the UPS is
commissioned.
If the UPS is delivered without batteries, Kohler Uninterruptible Power is not responsible for any damage or malfunctioning
caused to the UPS by the incorrect supply, storage, installation or connection of batteries by third parties.
WARNING: The UPS system, the battery cabinet (option) and the batteries are heavy and may tip during
transportation causing serious injury if the unpacking instructions are not followed closely.
CAUTION: Before you finally unpack the equipment, remove any additional external shipping packaging
and visually check that the ‘Tip&Tel’ indicator (“FRAGILE” and “ARROW”) on the packing container is intact.
Figure 3.1 Unpacking cabinets A & B
3
24

8© 2023 Kohler Uninterruptible Power 29/11/23
3: Installation
3.3 Storage
3.3.1 UPS storage
If you plan to store the UPS prior to use, it should be kept in a clean, dry environment with an ambient temperature
between -25°C to +70°C and relative humidity of less than 90%.
If the UPS is removed from the packing container you must also ensure you protect it from dust.
3.3.2 Battery
The storage capability of the UPS batteries depends greatly on the ambient temperature. It is important not to store the
UPS batteries for longer than 6 months at 20°C, 3 months at 30°C or 2 months at 35°C storage temperature without
recharging the battery.
For longer term storage the battery must be fully recharged every 6 months @20°C.
3.4 Positioning
3.4.1 Planning the installation
A certain amount of pre-planning will help ensure smooth, trouble-free equipment installation. The following guidelines
should be taken into account when planning a suitable UPS location and environment.
1. The equipment must be installed and transported in a upright position.
2. The floor at the installed location and en-route from the off-loading point must be able to safely take the weight of the
UPS and battery equipment plus fork lift during transit. The floor material where the UPS is to be located should be
non-flammable.
3. The UPS cabinet requires space to bottom/front and back to enable cooling airflow. Allow a minimum of 200mm
clearance at the back of the cabinet. Suitable ventilation airflow (not exceeding +40°C) must be provided (see Figure
3.2).
4. All parts of the UPS requiring access for maintenance, servicing and user operation are accessible from the front and
rear. Reserve a minimum of 900mm space at the front of the UPS cabinet.
5. A temperature of 20°C is recommended to achieve a long battery life.
6. Avoid high ambient temperature, moisture and humidity.
In summary
The UPS should be located where:
a) Humidity (< 90% non-condensing) and temperature (+15°C / +25°C) are within prescribed limits.
b) Fire protection standards are respected.
c) Cabling can be performed easily.
d) A minimum 900mm front accessibility is available for service or periodic maintenance.
e) Requested air cooling flow is available.
f) The air conditioning system can provide a sufficient amount of air cooling to keep the room at, or below, the
maximum desired temperature.
g) No dust or corrosive/explosive gases are present.
h) The location is vibration free.
i) If the UPS is to be installed in bayed enclosures, partition walls have to be installed.
CAUTION: Sealed batteries must never be stored in a discharged or partially discharged state.
Extreme temperature, under-charge, overcharge or over-discharge will destroy the batteries!
Key Point: Note the following:
• Charge the battery both before and after storing.
• Always store the batteries in a dry, clean, cool environment in their original packaging.
• If the packaging is removed protect the batteries from dust and humidity.

3: Installation
© 2023 Kohler Uninterruptible Power 29/11/23 9
Figure 3.2 UPS Space Recommendations
10kVA 15kVA 20kVA 25kVA 30kVA 40kVA 50kVA
Heat Dissipation with 100% Non-linear Load per
range (EN 62040-3)
W 600 900 1100 1400 1700 2300 2900
Heat Dissipation with 100% Non-linear Load per
range (EN 62040-3)
BTU/h 2048 3072 3754 4778 5802 7850 9898
Airflow (25°C - 30°C) with 100% Non-linear Load
per range (EN 62040-3)
m³/h 150 150 150 150 570 570 570
Heat Dissipation without load W 120 150 150 170 250 300 350
Cabinet A Cabinet B Cabinet C Batt Cab C
Dimensions (WxHxD)mm 345x720x710 345x1045x710 440x1420x910 480x1420x940
Maintenance/Service Accessibility Top, rear, front, left and right side Top, front, left and right side
Positioning Min. 200mm rear space required for ventilation
Input and Output Power Cabling From the bottom at the rear. From the bottom at the front
*Although the diagram shows 200mm is required at the rear of the cabinet, ‘A’ and ‘B’ cabinets should be
cabled such that the cabinet can be pulled forward to give access to the rear connections.

10 © 2023 Kohler Uninterruptible Power 29/11/23
3: Installation
3.5 UPS Power Cabling
3.5.1 General requirements (preparation and planning)
It is the customer’s responsibility to provide all external fuses, isolators and cables used to connect the UPS input and
output power supplies. The information in this section should help in the planning and preparation of the UPS power
cabling.
The UPS input supply and bypass supply should be connected to the utility mains through a LV-Distribution board and
protected by a circuit breaker or fuse. This provides overload protection and also a means of isolating the UPS from the
mains supply when required. Similarly, the UPS output supply should be connected to the load equipment via a suitably
fused output distribution panel.
The UPS can be wired with a ‘single feed’ input (standard), whereby the UPS input supply is internally connected to the
UPS bypass circuit, or it can be wired with a ‘dual feed’ input – where the UPS bypass circuit is connected to a dedicated
‘bypass’ supply (see Figure 3.4).
Figure 3.4 identifies the UPS input/output cabling requirements and provides information regarding the necessary fuse
and cable ratings, and cable sizing.
Figures 3.6 and 3.7 show details of the power terminal connections within the UPS including connection sizes and
recommended tightening torque. This illustration shows that the UPS unit requires the following power cables:
Rectifier (In):
• three-phase (1L1, 1L2, 1L3)
• neutral (1N)
• protective earth (PE) connection for the rectifier input
Bypass (In) (Dual feed system only):
• three-phase (2L1, 2L2, 2L3)
• neutral (2N)
• protective earth (PE) connection for the bypass if used as ‘Dual Feed’ input
Load (Out):
• three-phase (3L1, 3L2, 3L3)
• neutral (3N)
• protective earth (PE) connection for the load output
External Battery:
• Plus (+)
• Common (N)
• Minus (-)
• protective earth (PE) connection for the external batteries
• the UPS internal batteries must be disconnected if external batteries are used. Under no circumstances should
external and internal batteries be connected together in parallel.
Key Point: This information is given for guidance only. All fuses, isolators and power cables must be rated and
installed in accordance with the prescribed IEC standards or local regulation – e.g. BS7671.

3: Installation
© 2023 Kohler Uninterruptible Power 29/11/23 11
Input neutral grounding
Figure 3.3 Input neutral grounding
Key Point: Input neutral is required to operate the rectifier.
I n TN - S sy s t e m s, no 4 - p o l e i np u t s w i t c h e s or ci r c u i t b r e a k e r s s ho u l d b e u s e d .
During battery operation the neutral must always be grounded.
0V 230V
UPS

12 © 2023 Kohler Uninterruptible Power 29/11/23
3: Installation
Figure 3.4 Kohler PW5000/TP fuse & cable rating
SINGLE INPUT FEED
DUAL INPUT FEED
Notes:
1. Fuse and Cable recommendations to IEC 60950-1:2001
2. The fuse and cable rating details in the above tables are a recommendation only.
3. The UPS must be installed to prescribed IEC or local regulations (e.g. BS7671).
4. External DC Cables and Battery fuses are bespoke to the installation.
Power (kVA) Fuse A (Agl/CB) (A) Cable A (mm²) Cable D (mm²)
10 3 x 20 5 x 2.5 5 x 2.5
15 3 x 32 5 x 4.0 5 x 4.0
20 3 x 40 5 x 6.0 5 x 6.0
25 3 x 40 5 x 6.0 5 x 6.0
30 3 x 63 5 x 10 5 x 10
40 3 x 80 5 x 25 5 x 25
50 3 x 80 5 x 25 5 x 25
Power (kVA) Fuse B (Agl/
CB) (A) Cable B (mm²) Fuse C (Agl/CB) (A) Cable C (mm²) Cable D (mm²)
10 3 x 20 5 x 2.5 3 x 20 5 x 2.5 5 x 2.5
15 3 x 32 5 x 4.0 3 x 32 5 x 4.0 5 x 4.0
20 3 x 40 5 x 6.0 3 x 40 5 x 6.0 5 x 6.0
25 3 x 40 5 x 6.0 3 x 40 5 x 6.0 5 x 6.0
30 3 x 63 5 x 10 3 x 63 5 x 10 5 x 10
40 3 x 80 5 x 25 3 x 80 5 x 25 5 x 25
50 3 x 80 5 x 25 3 x 80 5 x 25 5 x 25

3: Installation
© 2023 Kohler Uninterruptible Power 29/11/23 13
Cabling a parallel system
In order to achieve equal load sharing between the UPS-cabinets in a multi-cabinet installation, the input cables from the
input distribution board to each UPS cabinet should be of equal length. Similarly the UPS output cables to the output
distribution board should be of equal length (see Figure 3.5).
Figure 3.5 Cable lengths for multi cabinet configurations (assuming a dual input supply)
Rectifier Feed Bypass Feed
Load
Recommended cable configuration
The cable configuration below is not recommended
Bypass Feed
Rectifier Feed
UPS 1 UPS 2 UPS 3 UPS 4
UPS 1 UPS 2 UPS 3 UPS 4
Load

14 © 2023 Kohler Uninterruptible Power 29/11/23
3: Installation
Figure 3.6 10-25kVA Connection details
1L1
3L2 3N1L2
1L3
1N
PE
PEPE
FA 9FA 7
FA 1 1
To B yp a ss Line Fuses(FA 2)
FA 23
FA 24
FA 2 5
PE
Ex.Batt.EarthInputM ains BypassM ains U PSO utput Earth
3L1 3L3
N+
1L1
3L2 3N1L2
1L3
1N
2L1
2L2
2L3
2N
PE
PEPE
FA 9FA 7
FA 1 1
To B yp a ss Line Fuses(FA 2 )
FA 23
FA 24
FA 2 5
PE
Ex.Batt.EarthInputM ains BypassM ains U PSO utput Earth
3L1 3L3
N+
Terminal Connections Battery
(+ / N / –)
Input Bypass
2L1, 2L2, 2L3 +N
Input Rectifier
1L1, 1L2, 1L3 +N
Output load
3L1,3L2,3L3 +N
Tightening
Torque
Cabinets ‘A’ & ‘B’ (10-25kVA)
(PE)
3 x 16 mm2
1 x 16 mm
4 x 16 mm2
1 x 16 mm2
4 x 16 mm2
1 x 16 mm2
4 x 16 mm2
1 x 16 mm2
1.5 Nm
1.5 Nm
Notes:
1. Fuse and Cable recommendations to IEC 60950-1:2001
2. The fuse and cable rating details in the above tables are a recommendation only.
3. The UPS must be installed to prescribed IEC or local regulations (e.g. BS7671)
10kVA – 25kVA (Cabinets A & B)
Power Connections (Single input feed)
10kVA – 25kVA (Cabinets A & B)
Power Connections (Dual input feed)
For models in this power range the
external power connections are made to a
row of terminals located on the UPS Filter
Board which is accessible from the rear of
the UPS module.
Note that the Single Input configuration
requires the bypass line fuses to be
connected to FA7/FA9/FA11 on the Filter
Board. This is the standard configuration
set when leaving the factory unless a dual
input configuration is specified.
This illustration shows the connections for
a Dual input configurations, with a
separate mains supply connected to the
Bypass Mains terminals.
Note that the Dual Input configuration
requires the bypass line fuses to be
connected to FA23/FA24/FA25 on the
Filter Board. If necessary these cables will
be reconfigured by the Commissioning
Engineer as part of the commissioning
procedure.

3: Installation
© 2023 Kohler Uninterruptible Power 29/11/23 15
Figure 3.7 30-50kVA Connection details
1L1
N
+3L2
3N
1L2 1L3 1N PE
PEPE
3L1 3L3
PE
1L1
N
+2L1 2L2 2L3 2N 3L23N
1L2 1L3 1N PE
PEPE
3L1 3L3
PE
Terminal Connections Battery
(+ / N / – )
Input Bypass
2L1, 2L2, 2L3 +N
Input Rectifier
1L1, 1L2, 1L3 +N
Output load
3L1,3L2,3L3 +N
Tightening
Torque
Cabinet ‘C’ (25-30kVA)
(PE)
3 x 35 mm2
1 x 16 mm2
4 x 16 mm2
1 x 16 mm2
4 x 16 mm2
1 x 16 mm2
4 x 16 mm2
1 x 16 mm2
3.5 Nm
1.5 Nm
Cabinet ‘C’ (40-50kVA)
(PE)
3 x 35 mm2
1 x 35 mm2
4 x 35 mm2
1 x 35 mm2
4 x 35 mm2
1 x 35 mm2
4 x 35 mm2
1 x 35 mm2
3.5 Nm
3.5 Nm
Notes:
1. Fuse and Cable recommendations to IEC 60950-1:2001
2. The fuse and cable rating details in the above tables are a recommendation only.
3. The UPS must be installed to prescribed IEC or local regulations (e.g. BS7671)
30kVA – 50kVA
Power Connections
For models in this power range the external power connections are made to a row of
terminals blocks mounted on a rail on the front of the UPS module.
Note that the Single Input configuration requires three links to be fitted between the input
and bypass supply connections, as shown in the above illustration. This is the standard
configuration set when leaving the factory unless a dual input configuration is specified.
(Cabinet C)
(Single input feed)
30kVA – 50kVA
Power Connections
(Cabinet C)
(Dual input feed)
The above illustration shows the connections for a Dual input configurations, with a
separate mains supply connected to the Bypass Mains terminals.
Note that the Dual Input configuration requires the links to be removed between in input
and bypass terminals. If necessary these cables will be reconfigured by the Commissioning
Engineer as part of the commissioning procedure.
3 x input/bypass mains links
(for single input feed only)
Input/bypass neutral
always linked

16 © 2023 Kohler Uninterruptible Power 29/11/23
3: Installation
Figure 3.8 Single input feed - power connection diagram
FA1
FA3
(F1)
Fuse A
Inverter
FA2
UPS Cabinet
Static
Switch
2L1 2L2 2L3 2N PE2
L1 L2 L3 NPE
A A A A A
IL1 IL2 IL3 IN PE1
INPUT MAINS SUPPLY
Bypass Links
Input
Fuse
Battery
Fuse
Bypass
Fuse
IA2
IA1
Output
(Parallel)
Switch
Maintenance
Bypass
Switch
D D D D D
3L1 3L2 3L3 3N PE3
OUTPUT (LOAD) SUPPLY
Rectifier
SINGLE INPUT FEED
Notes:
1. Fuse and Cable recommendations to IEC 60950-1:2001
2. The fuse and cable rating details in the above tables are a recommendation only.
3. The UPS must be installed to prescribed IEC or local regulations (e.g. BS7671).
4. External DC Cables and Battery fuses are bespoke to the installation.
Power (kVA) Fuse A (Agl/CB) (A) Cable A (mm²) Cable D (mm²)
10 3 x 20 5 x 2.5 5 x 2.5
15 3 x 32 5 x 4.0 5 x 4.0
20 3 x 40 5 x 6.0 5 x 6.0
25 3 x 40 5 x 6.0 5 x 6.0
30 3 x 63 5 x 10 5 x 10
40 3 x 80 5 x 25 5 x 25
50 3 x 80 5 x 25 5 x 25