CyberPower SM20KPM User manual

User’s Manual
SM20KPM
SM200KMF
SM120KMF
SM060KMF
CyberPower Systems Inc.
www.cpsww.com

Safety Precautions
Modular UPS SM series User Manual - 1 -
Safety Precautions
This manual contains information concerning the installation and operation of Modular UPS . Please carefully read this manual prior to installation.
The Modular UPS cannot be put into operation until it is commissioned by engineers approved by the manufacturer (or its agent). Not doing so
could result in personnel safety risk equipment malfunction and invalidation of warranty.
The UPS has been designed for commercial or industrial use only and is not intended for use in any life support application. This is a CLASS C
Uninterruptible Power Supply (UPS) product. In a domestic environment this product may cause radio interference in which case the user may be
required to take additional measures.
Conformity and standards
This product complies with
CE73/23 & 93/68 (low voltage safety) and 89/336 (EMC) and the following UPS product standards:
*IEC62040-1-1-General and safety requirements for use in operator access area
*IEC/EN62040-2 EMC requirements CLASS C
*IEC62040-3 Performance requirements and test methods
For more details refer to Chapter 9. Continued compliance requires installation in accordance with these instructions and the use of
manufacturer approved accessories only.
WARNING: high earth leakage current
Earth connection is critical before connecting the input supply (include both utility supply and battery).
"Earth leakage current introduced by the UPS in any configuration from 10kW to 200kW exceeds 3.5 mA and is less than 1000 mA and
complies with the requirements of IEC/EN 62040-1 / IEC/EN 60950-1" Transient and steady-state earth leakage currents which may occur when
starting the equipment should be taken into account when selecting instantaneous RCCB or RCD devices.
Residual Current Circuit Breakers (RCCBs) must be selected sensitive to DC unidirectional pulses (class A) and insensitive to transient current
pulses.
Note also that the earth leakage currents of the load will be carried by this RCCB or RCD.
This equipment must be earthed in accordance with local electrical authority codes of practice.
WARNING: back-feeding protection
This system has a control signal available for use with an automatic device externally located to protect against back-feeding voltage through
the mains Static Bypass circuit. If this protection is not used with the switchgear that is used to isolate the bypass circuit a label must be added
to the switchgear to advise service personnel that the circuit is connected to a UPS system.
The text has the following meaning or is equivalent to: Isolate the UPS before working on the circuit of this UPS.
Components that can be maintained by user
All the equipment maintenance and servicing procedures involving internal access need special tools and should be carried
out only by trained
personnel. The components that can only be accessed by opening the protective cover with tools cannot be maintained by user.
This UPS full complies with “IEC62040-1-1-General and safety requirements for use in operator access area UPS”. Dangerous voltages are
present within the battery box. However the risk of contact with these high voltages is minimized for non-service personnel. Since the component
with dangerous voltage can only be touched by opening the protective cover with a tool the possibility of touching high voltage component is
minimized. No risk exists to any personnel when operating the equipment in the normal manner following the recommended operating
procedures in this manual.

Safety Precautions
Modular UPS SM series User Manual - 2 -
Battery voltage higher than 400Vdc
All the battery maintenance and servicing procedures involving internal access need special tools or keys and should be carried out only by
trained personnel.
SPECIAL CARE SHOULD BE TAKEN WHEN WORKING WITH THE BATTERIES ASSOCIATED WITH THIS EQUIPMENT.
WHEN CONNECTED TOGETHER, THE BATTERY TERMINAL VOLTAGE WILL EXCEED 400Vdc AND IS POTENTIALLY LEATHAL.
Battery manufacturers supply details of the necessary precautions to be observed when working on or in the vicinity of a large bank of battery
cells. These precautions should be followed implicitly at all times. Particular attention should be paid to the recommendations concerning local
environmental conditions and the provision of protective clothing first aid and fire-fighting facilities.

Contents
Modular UPS SM series User Manual 3
Contents
ContentsContents
Contents
Safety Precautions .......................................................................................................... - 1 -
Chapter 1 Installation ......................................................................................................... 8
1.1 Introduction ........................................................................................................... 8
1.2 Initial C ecking ....................................................................................................... 8
1.3 Location .................................................................................................................. 8
1.3.1 UPS Location ................................................................................................ 8
1.3.2 External Battery Room ................................................................................. 9
1.3.3 Storing .......................................................................................................... 9
1.4 Positioning .............................................................................................................. 9
1.4.1 System Cabinet ............................................................................................. 9
1.4.2 Moving t e Cabinets .................................................................................... 9
1.4.3 Clearances Required for Operating ............................................................ 10
1.4.4 Front Access ............................................................................................... 10
1.4.5 Final Positioning ......................................................................................... 10
1.4.6 Installation of Adjustable Feet ................................................................... 10
1.4.7 UPS Composition........................................................................................ 10
1.4.8 Installing Power Modules ........................................................................... 11
1.4.9 Cable Entry ................................................................................................. 12
1.5 External Protective Devices.................................................................................. 12
1.5.1 Rectifier and Bypass Input Supply of t e UPS ............................................ 12
1.5.2 External Battery ......................................................................................... 13
1.5.3 UPS Output................................................................................................. 13
1.6 Power Cables ........................................................................................................ 13
1.6.1 Cable Connections ..................................................................................... 14
1.7 Control Cabling and Communication ................................................................... 14
1.7.1 UPS Dry Contact and Monitoring Board Features ..................................... 14
1.7.2 Dry Contact Interface: Battery and Environmental Temperature Detection
(J2 / J3) ................................................................................................................ 15
1.7.3 Dry Contact Interface: Remote EPO Input Port (J4) ................................... 15
1.7.4 Dry Contact Interface: Generator Input (J5) .............................................. 16
1.7.5 Dry Contact Interface: Battery Circuit Beaker Input Port (J6 / J7) ............. 17
1.7.6 Dry Contact Interface: Battery Warning Output (J8) ................................. 18
1.7.7 Dry Contact Interface: Integrated Warning Output (J9) ............................ 18
1.7.8 Dry Contact Interface: Mains Failure Warning Output (J10) ..................... 19
Chapter 2 Battery Installation .......................................................................................... 20
2.1 General Recommendations.................................................................................. 20
2.2 Battery Typologies ................................................................................................ 21
2.2.1 Battery Installation ..................................................................................... 21
2.2 Battery Maintenance ........................................................................................... 22

Contents
Modular UPS SM series User Manual 4
Chapter 3 Installation of UPS Rack System and Parallel System .................................... 23
3.1 Overview .............................................................................................................. 23
3.2 UPS Rack Modules in Parallel System .................................................................. 23
3.2.1 Installation of Cabinet ................................................................................ 23
3.2.2 External Protective Devices ....................................................................... 23
3.2.3 Power Cables .............................................................................................. 24
3.2.4 Parallel Signal Board ................................................................................... 24
3.2.5 Control Cables ............................................................................................ 24
Chapter 4 Installation Dra ing ........................................................................................ 25
Chapter 5 Operation ......................................................................................................... 31
5.1 Introduction ......................................................................................................... 31
5.1.1 Split-Bypass Input....................................................................................... 31
5.1.2 Static Transfer Switc ................................................................................. 32
5.2 1+1 Parallel System .............................................................................................. 32
5.2.1 Features of Parallel System ........................................................................ 32
5.2.2 Parallel Requirements of UPS Modules ..................................................... 32
5.3 Operating Mode ................................................................................................... 33
5.3.1 Normal Mode ............................................................................................. 33
5.3.2 Battery Mode ............................................................................................. 33
5.3.3 Auto-Restart Mode .................................................................................... 33
5.3.4 Bypass Mode .............................................................................................. 33
5.3.5 Cold Start Mode ......................................................................................... 33
5.3.6 Maintenance Mode (Manual Bypass) ........................................................ 33
5.3.7 Parallel Redundancy Mode (System Expansion) ........................................ 33
5.3.8 Eco Mode ................................................................................................... 34
5.4 Battery Management—Set During Commissioning ............................................. 34
5.4.1 Normal Function ........................................................................................ 34
5.4.2 Advanced Functions (Software Settings Performed by t e Commissioning
Engineer) ............................................................................................................. 34
5.5 Battery Protection (Settings by Commissioning Engineer) .................................. 34
Chapter 6 Operating Instructions .................................................................................... 35
6.1 Introduction ......................................................................................................... 35
6.1.1 Power Switc es .......................................................................................... 35
6.2 UPS Startup .......................................................................................................... 35
6.2.1 Start-Up Procedure .................................................................................... 35
6.2.2 Procedures for Switc ing Between Operation Modes............................... 36
6.3 Procedure for Switc ing t e UPS between Maintenance Bypass and Normal
Mode .......................................................................................................................... 37
6.3.1 Procedure for Switc ing from Normal Mode to Maintenance Bypass Mode
............................................................................................................................. 37
6.3.2 Procedure for Switc ing from Maintenance Mode to Normal Mode ....... 37
6.4 Procedure for Completely Powering Down a UPS ............................................... 38
6.5 Emergency Power Off (EPO) Procedure ............................................................... 38
6.6 Auto Start ............................................................................................................. 38

Contents
Modular UPS SM series User Manual 5
6.7 UPS Reset Procedure ............................................................................................ 38
6.8 Operation Instruction for Power Module Maintenance ...................................... 38
6.9 Language Selection .............................................................................................. 39
6.10 C anging t e Current Date and Time ................................................................ 39
6.11 Control Password 1 ............................................................................................ 39
Chapter 7 Operator Control and Display Panel ............................................................... 40
7.1 Introduction ......................................................................................................... 40
7.1.1 Mimic Current Pat .................................................................................... 41
7.1.2 Audible Alarm (buzzer) .............................................................................. 41
7.1.3 Functional Keys .......................................................................................... 41
7.2 LCD Display Type .................................................................................................. 42
7.3 Detailed Description of Menu Items .................................................................... 43
7.4 UPS Event Log ....................................................................................................... 44
Chapter 8 Optional Parts .................................................................................................. 48
8.1 Replacing Dust Filters ........................................................................................... 48
Chapter 9 Product Specification ...................................................................................... 49
9.1 Applicable Standards............................................................................................ 49
9.2 Environmental C aracteristics ............................................................................. 49
9.3 Mec anical C aracteristics .................................................................................. 49
9.4 Electrical C aracteristics (Input Rectifier) ............................................................ 50
9.5 Electrical C aracteristics (Intermediate DC Link) ................................................. 50
9.6 Electrical C aracteristics (Inverter Output) ......................................................... 50
9.7 Electrical C aracteristics (Bypass Input) .............................................................. 51
9.8 Efficiency .............................................................................................................. 52

Table of Figures
Modular UPS SM series User Manual 6
Table of Figures
Fig.1- 1: UPS structure................................................................................................ 11
Fig.1- 2: Power Module Installation Diagram ............................................................ 12
Fig.1- 3: T e Symbols of RCCB .................................................................................... 12
Fig.1- 4: Front Panel of Bypass Module(Interface of Dry Contact / Monitoring Board)
............................................................................................................................. 15
Fig.1- 5: Diagram of J2 and J3 Dry Contact of Temperature Detection ...................... 15
Fig.1- 6: Diagram of input dry contact for remote EPO ............................................. 16
Fig.1- 7: Connection of Generator ............................................................................. 17
Fig.1- 8: BCB Interface ................................................................................................ 17
Fig.1- 9: Battery Low Warning Dry Contact ................................................................ 18
Fig.1- 10: Integrated warning dry contact .................................................................. 18
Fig.1- 11: Utility Failure Warning Dry Contact ........................................................... 19
Fig.3- 1: Circuit ram of EPO ........................................................................................ 23
Fig.3- 2: Installation of Parallel Signal Board BJ ......................................................... 24
Fig.3- 3: Connection of Parallel Control Cables of “1+N” System .............................. 24
Fig.4- 1: Wiring Diagram ............................................................................................ 25
Fig.4- 2: External Battery Connection ........................................................................ 25
Fig.4- 3: 200KVA UPS Module System, Front View and Rear View wit out Door ..... 26
Fig.4- 4: 120KVA UPS Module System, Front View and Rear View wit out Door ..... 26
Fig.4- 5: 60KVA UPS Module System, Front View and Rear View wit out Door ....... 27
Fig.4- 6: 200KVA UPS External Dimensions ................................................................ 27
Fig.4- 7: 120KVA UPS External Dimensions ................................................................ 28
Fig.4- 8: 60KVA UPS External Dimensions .................................................................. 28
Fig.4- 9: Power Connection of Module System UPS .................................................. 29
Fig.4- 10: Power Module ............................................................................................ 29
Fig.4- 11: Static Bypass Module ................................................................................. 30
Fig.5- 1: Single Unit Block Diagram ............................................................................ 31
Fig.6- 1: Location of Battery Cold Start Button .......................................................... 37
Fig.7- 1: UPS operator control and display panel ....................................................... 40
Fig.7- 2: Main LCD Display .......................................................................................... 42
Fig.8- 1: Dust Filter ..................................................................................................... 48

Table of Tables
Modular UPS SM series User Manual 7
Table of Tables
Table.1- 1: UPS Configuration List .............................................................................. 11
Table.1- 2: Maximum Steady State AC and DC Current ............................................. 13
Table.1- 3: Description of Input Dry Contact ............................................................. 15
Table.1- 4: Description of Input Dry Contact for Remote EPO ................................... 16
Table.1- 5: Description of Status Interface and Connection of Generator ................ 17
Table.1- 6: Description of BCB Interface .................................................................... 17
Table.1- 7: Battery warning dry contact interface description .................................. 18
Table.1- 8: Integrated warning dry contact interface description ............................. 19
Table.1- 9: Description of Mains failure warning dry contact .................................... 19
Table.7- 1: Description of UPS Operator Control and Display Panel .......................... 40
Table.7- 2: Status Description of Indicator ................................................................. 41
Table.7- 3: Description of Audible Alarm ................................................................... 41
Table.7- 4: Functions of Functional Keys .................................................................... 41
Table.7- 5: Description of LCD Icons .......................................................................... 42
Table.7- 6: Description of Items in UPS System Information Window....................... 43
Table.7- 7: Item Description of UPS Menu ................................................................. 43
Table.7- 8: UPS Event List ........................................................................................... 44
Table.9- 1: Compliance wit European and International Standards ........................ 49
Table.9- 2: Environmental Properties ........................................................................ 49
Table.9- 3: Mec anical Properties ............................................................................. 49
Table.9- 4: Rectifier AC Input (mains) ........................................................................ 50
Table.9- 5: Battery Information .................................................................................. 50
Table.9- 6: Inverter Output (to Critical Load) ............................................................. 50
Table.9- 7: Bypass Input ............................................................................................. 51
Table.9- 8: Efficiency, Air Exc ange ............................................................................ 52

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Modular UPS SM series User Manual 8
Chapter 1 Installation
1.1 Introduction
This chapter introduces the relevant requirements for positioning and cabling of the Modular UPS and related equipment. Because each site has its
requirements it is not the aim of this chapter to provide step-by-step installation instructions but to act as a guide for the general procedures and
practices that should be observed by the installing engineer.
Warning: installation can only be done by authorized engineers
Do not apply electrical power to the
UPS equipment before the commissioning engineer arrives at installation site.
The UPS should be installed by a qualified engineer in accordance with the information contained in this chapter. All the equipment not referred to in
this manual is shipped with details of its own mechanical and electrical installation information.
Note: 3-Phase 4-Wire Input Power is required
The standard UPS system can be connected to TN TT AC distribution system (IEC60364-3) of 3-phase 4-wire and a 3-wire to 4-wire conversion
transformer is provided as an optional part.
WARNING: battery hazards
SPECIAL CARE SHOULD BE TAKEN WHEN WORKING WITH THE BATTERIES ASSOCIATED WITH THIS EQUIPMENT.
When connecting the battery the battery terminal voltage will exceed 400Vdc and is potentially lethal.
 Eye protection should be worn to prevent injury from accidental electrical arcs.
 Remove rings watches and all metal objects.
 Only use tools with insulated handles.
 Wear rubber gloves.
 If a battery leaks electrolyte or is otherwise physically damaged it must be replaced stored in a container resistant to sulfuric acid and
disposed of in accordance with local regulations.
 If electrolyte comes into contact with the skin the affected area should be washed immediately with water.
1.2 Initial Checking
Perform the following checking operations prior to the UPS installation.
1. Visually examine if there is any damage inside and outside the UPS rack and battery equipment due to the transportation. Report any such
damage to the shipper immediately.
2. Verify the product label and confirm the correctness of the equipment. The equipment label is attached on the back of front door. The UPS model
capacity and main parameters are marked on the label.
1.3 Location
1.3.1 UPS Location
The UPS is intended for indoor installation and should be located in a cool dry and clean environment with adequate ventilation to keep the
environmental parameters within the specified operating range (see Table.9-2).The Modular series UPS uses forced convection cooling by internal
fans. Cooling air enters the module through ventilation grills located at the front part of the cabinet and exhausted through grills located in the rear
part of the cabinet. Please do not block the ventilation holes.
If necessary a system of extractor fans should be installed to aid cooling-air flow. An air filter should be used when the UPS is to operate in a dirty
environment and should be regularly cleaned to maintain airflow. The cooling capacity of air conditioner should be selected according to the power
loss data of UPS specified in Table.9-8: Normal mode (VFI SS 111 double-conversion UPS)
No e: The UPS should be installed on a cement surface or other surface that is not combustible.

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Modular UPS SM series User Manual 9
1.3.2 External Battery Room
The battery will generate some amount of hydrogen and oxygen at the end of charging so the fresh air volume of the battery installation environment
must meet EN50272-2001 requirements.
The ambient temperature of the battery must be stable. Ambient temperature is a major factor in determining the battery capacity and life. The
nominal operating temperature of battery is 20°C. Operating above this temperature will reduce the battery life and operation below this temperature
will reduce the battery capacity. If the average operating temperature of battery is increased from 20ºC to 30ºC then the service life of the battery will
be reduced by 50%. If the operating temperature of the battery is above 40ºC then the battery service life will be decreased in exponent rate. In a
normal installation the battery temperature is maintained between 15°C and 25°C. Keep batteries away from heat sources or air outlets.
If external batteries are to be used the battery circuit breakers (or fuses) must be mounted as close as possible to the batteries and the connecting
cables should be as short as possible.
1.3.3 Storing
Should the equipment not be installed immediately it must be stored in a room so as to protect it against excessive humidity and heat sources (see
Table.9-2).The battery needs to be stored in dry and cool place with good ventilation. The most suitable storage temperature is 20 ºC to 25ºC.
Preventing battery deep discharge
Should the UPS remains unpowered for a prolonged period of time while the battery are connected the batteries may deeply discharge and being so
permanently damaged .In such cases it is therefore recommended to leave the battery circuit breaker(s) open. During storage in any case
periodically charge the battery according to the battery user manuals.
1.4 Positioning
When the equipment has been finally positioned ensure the UPS will remain stationary and stable. To prolong the service life the place chosen
must guarantee:
 Space for easy operation on the UPS
 Air sufficient enough to dispel heat produced by UPS
 Against atmospheric agents
 Against excessive humidity and heat sources
 Against dust
 With the current fire prevention requirements
 The operating environment temperature is within +20°C to +25°C. The batteries are at maximum efficiency in this temperature range (for
information about the battery storage and transportation as well as the environment refer to Table.9-2 )
 This equipment is of steel frame structure wrapped by removable panels. The top and side panels are fixed by screws.
 After opening the UPS rack door the auxiliary connections for external low voltage interface and the maintenance bypass can be accessed.
The UPS rack has an operator and control panel located on its front door which provides the basic operating status and alarm information.
Batteries are external. The UPS provides air inlet port in the front and the air exhaust port in the rear part.
1.4.1 System Cabinet
A UPS system can comprise an UPS rack system external battery cabinet depending on the specific system requirement.
All the UPS system cabinets used in the same installation site are of the same height and should be positioned side-by-side to achieve an
aesthetically appealing effect. Refer to Chapter 7 Installation Drawing for the positioning of UPS cabinet.
1.4.2 Moving the Cabinets
Warning
Ensure that any lifting equipment used in moving the UPS cabinet has sufficient lifting capacity.
The UPS is fitted with castors
–
take care to prevent
movement when unbolting the equipment from its shipping pallet. Ensure adequate personnel and lifting aids are available when removing the
shipping pallet.
Ensure that the UPS weight is within the weight loading capacity range of any hoisting equipment. See Table.9-3 for UPS weight.
UPS and optional cabinets can be handled by means of a fork lift or similar equipment. The UPS cabinet can also be moved by its castors when
moving in a short distance.
No e: Care must be taken when handling units fitted with batteries. eep such moves to a minimum.

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Modular UPS SM series User Manual 10
1.4.3 Clearances Required for Operating
As rack module UPS has no ventilation grills at either sides no clearances are required for the sides.
To enable routine tightening of power terminations within the UPS it is recommended that clearance around the front of the equipment should be
sufficient to enable free passage of personnel with the doors fully opened. It is important to leave a distance of 500mm in the rear side of the rack to
permit adequate circulation of air coming out of the unit.
If the UPS make use of internal modular battery sufficient clearing shall be given at the back site to allow personnel to operate the battery circuit
breakers
1.4.4 Front Access
The component layout of the UPS rack system supports front access and repairing the UPS thus reducing the space requirement for side access.
1.4.5 Final Positioning
When the equipment has been finally positioned ensure the adjustable feet are set so that the UPS will remain stationary and stable.
1.4.6 Installation of Adjustable Feet
Installation diagrams in Chapter 4 of this manual identify the location of the holes in the base plate through which the equipment can be bolted to the
floor. If the UPS is to be located on a raised floor it should be mounted on a pedestal suitably designed to accept the UPS point loading (more than
800 kg).
1.4.7 UPS Composition
The UPS structure is shown in Fig. 1-1. The UPS configuration is provided in Table. 1-1
(a) 10 module cabinet

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Modular UPS SM series User Manual 11
(b) 6 module cabinet
(c) 3 module cabinet
Fig.1- 1: UPS structure
Table.1- 1: UPS Configuration List
Item
Component
Quantity
Remarks
1 System Display 1 Requisite factory installed
2
Bypass module
1
Requisite facto
ry installed
3
Input/output/maintenance
bypass breakers
1
Requisite facto
ry
installed
4
Power module
1 ≤n ≤10
Requisite
1.4.8 Installing Power Modules
The number and possible installation positions of the Power Modules may vary according to the chosen factory configuration.
Please install the power modules and from bottom to top so as to avoid cabinet toppling due to high gravity center.
Installation procedures of power modules
When installing power modules always work from the lower available space upwards to prevent from raising the center of gravity. The default setting
from the bottom space upwards is NO.1 to NO.10 (10 modules cabinet) NO.1 to NO.6 (6 modules cabinet) or NO.1 to NO.3 (3 modules cabinet).
Insert the module in the installation position and push it into the cabinet.
Secure the module to the cabinet through the fixing holes on both sides of the front panel of the module.

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Modular UPS SM series User Manual 12
Fig.1- 2: Power Module Installation Diagram
1.4.9 Cable Entry
Cables can enter the module UPS rack system and battery cabinet both from bottom and top. Cable entry is made possible through a blanking plate
fitted at the bottom or top of the equipment. The recommended installation practice is to install glands to prevent foreign material or vermin entering
the cabinet.
1.5 External Protective Devices
For safety concerns it is necessary to install external circuit breakers or other protective devices for the input AC supply of the UPS system. This
section provides generic practical information for qualified installation engineers. The installation engineers should have the knowledge of the
regulatory wiring standards and of the equipment to be installed.
1.5.1 Rectifier and Bypass Input Supply of the UPS
Over currents
Install suitable protective devices in the distribution unit of the incoming mains supply considering the power cable current-carrying capacity and
overload capacity of the system (see Tab. 9-7). Generally the magnetic circuit breaker with IEC60947-2 tripping curve C (normal) at the 125% of the
current listed in Tab. 9-7 is recommended. Split bypass: In case a split bypass is used separate protective devices should be installed for the rectifier
input and bypass input in the incoming mains distribution panel.
No e: The rectifier input and bypass input must use the same neutral line.
Protection against earth faults (RCD devices):
The RCD device installed upstream of the input supply should:
Sensitive to DC unidirectional pulses (class A) in the network
Insensitive to transient current pulses
Have an average sensitivity that is adjustable between 0.3A and 1A.
Fig.1- 3: The Symbols of RCCB
When using the RCD in the split bypass system or parallel system the RCD should be installed in the upstream of the input distribution to avoid
wrong alarm.
The residual current introduced by RFI filter in the UPS is between 3.5mA and 1000mA. It is recommended to confirm the sensitivity of each RCD of
upstream input distribution and downstream distribution (to load).

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Modular UPS SM series User Manual 13
1.5.2 External Battery
The DC compatible circuit breaker provides over current protection for UPS system and battery which is provided by the external battery cabinet.
See Appendix A for a selection guide.
1.5.3 UPS Output
In the eventuality that an external distribution panel is used for load distribution the selection of protective devices must provide discrimination with
those that are used at the input to the UPS (see Tab. 9-7).
1.6 Power Cables
Design the cables according to the descriptions in this section and local regulatory wiring standards and the environmental conditions (temperature
and physical support media) should be taken into consideration. Refer to IEC60950-1 Table 3B Cabling.
WARNING
FAILURE TO FOLLOW ADEQUATE EARTHING PROCEDURES CAN RESULT IN EMI ELECTRIC SHOCK HAZARD OR
RISK
OF FIRE
SHOULD AN EARTH FAULT OCCUR.
Table.1- 2: Maximum Steady State AC and DC Current
UPS
power(KVA)
Rated current (A)
Main input current at full load battery
charging1 ， 2 Output current at full load2 Battery discharging current at
E.O.D=1.67V/cell no overload
380V 400V 415V 380V 400V 415V
36 Batt
ery
string
38 Batt
ery
string
40 Batt
ery
string
200 306 293 281 303 290 278 468 443 421
120 184 176 168 182 174 167 281 266 253
100 153 146 140 152 145 139 234 222 211
60 92 88 84 91 87 83 140 133 126
40 61 59 56 61 58 56 94 89 84
30 46 44 42 45 43 42 70 66 63
20 31 29 28 30 29 28 47 44 42
Note:
1. Input current of common input configurations of rectifier and bypass
2. Take special care when determining the size of the output and bypass neutral cable, as the current circulating on the neutral cable may be greater
than nominal current in the case of non-linear loads, which is usually 1.732 times of rated currents.
3. The earth cable connecting the UPS to the main ground system must follow the most direct route possible. The earth conductor should be sized
according to the fault rating, cable lengths, type of protection, etc.
According to AS/IEC60950-1, the cross section area of the conductor is 90mm2 (200kVA), the cross section area of the conductor is 50mm2
(120 VA).
4. When sizing battery cables, a maximum volt drop of 4Vdc. is permissible at the current ratings given in Table.1-2. The load equipment is
connected to a distribution network of individually protected bus-bars fed by the UPS output rather than connected directly to the UPS. In parallel
multi-module systems, the output cable of each ups rack unit should be kept at equal length between the output of the ups rack output terminals and
the parallel distribution bus-bars to avoid affecting the shared current. When laying the power cables, do not form coils, so as to avoid the formation
of electromagnetic interference.
5. See Chapter 4 Installation Drawing for the positions of wiring terminals.
WARNING
FAILURE TO FOLLOW ADEQUATE EARTHING PROCEDURES CAN RESULT IN EMI ELECTRIC SHOCK HAZARD OR RISK OF FIRE
SHOULD AN EARTH FAULT OCCUR.

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Modular UPS SM series User Manual 14
1.6.1 Cable Connections
Note
The operations described in this section must be performed by authorized electricians
or qualified technical personnel.. If you have any
difficulties do not hesitate to contact our Customer Service & Support department.
After the equipment has been finally positioned and secured refer to Chapter 4 Installation Drawing to connect the power cables as described in the
following procedures:
1. Verify that all the external input distribution switches of the UPS are completely opened and the UPS internal maintenance bypass switch is
opened. Attach necessary warning signs to these switches to prevent unauthorized operation.
2. Open rear panel of the UPS and then the power connection terminals are visible.
3. Connect the protective earth and any necessary grounding cables to the PE terminal. The cabinet for the UPS must be connected to the user’s
ground connection.
No e: The grounding cable and neutral cable must be connected in accordance with local and national codes practice.
Identify and make power connections for incoming cables according to one of the two procedures below, depending on the type of installation:
Common Input Connections
4. For common bypass and rectifier inputs connect the AC input supply cables to the UPS input terminals (mA-mB-mC-mN) Refer to Fig. 4-11 and
tighten the connections to 5 Nm (M6 Bolt) 13Nm(M8 Bolt). ENSURE CORRECT PHASE ROTATION.
Split Bypass Connections
5. If a 'split-bypass' configuration is used connect the AC input supply cables to the rectifier input terminals (mA-mB-mC-mN) Refer to Fig.4-11 and
the AC bypass supply cables to the bypass input terminals (bA-bB-bC-bN) and tighten the connections to 5 Nm (M6 Bolt) or 13Nm (M8 Bolt) or
25Nm (M10 Bolt). ENSURE CORRECT PHASE ROTATION.
Note: For split Bypass operation ensure that the bus-bars between Bypass and Rectifier inputs are removed. The neutral line of bypass input must
be connected to that of the rectifier input.
Frequency Converter Mode
If the frequency converter configuration is used connect the AC input cables to the rectifier input terminals (mA-mB-mC-mN) Refer to Fig.4-11 and
tighten the connections to 5Nm (M6 bolt) or to 13Nm (M8 bolt) or to 25Nm (M10 bolt). ENSURE CORRECT PHASE ROTATION AND TIGHTEN
CONNECTION TERMINALS. No need to connect the bypass input cables to bypass input terminals (bA-bB-bC-bN).
Note: For the frequency converter operation mode ensure that the bus-bars between Bypass and Rectifier inputs are removed.
Output System Connections
6. Connect the system output cables between the UPS output bus-bars (oA-oB-oC-N) Refer to Fig.4-11 and the critical load and tighten the
connections to 5Nm (M6 Bolt) or to 13Nm (M8 Bolt) or to 25Nm(M10 Bolt). ENSURE CORRECT PHASE ROTATION.
WARNING
If the load equipment will not be ready to accept power on the arrival of the commissioning engineer then ensure that the system output cables are
safely isolated at their ends.
7. Re-install all the protective covers.
1.7 Control Cabling and Communication
1.7.1 UPS Dry Contact and Monitoring Board Features
According to the specific needs of the field the UPS may need auxiliary connection to realize the management of the battery system (including
external battery switch and battery temperature sensor) communicate with PC provide alarm signal to external device or realize remote EPO.
These functions are realized through the UPS dry contact board and monitoring board at the front of bypass module. The boards provide the
following interfaces:
 EPO
 Environment and battery temperature input interface
 Generator input dry contact interface

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 Battery warning output dry contact interface
 Battery circuit breaker interface
 Mains failure warning output dry contact interface
 Intelligent card interface
 User communication interface
The UPS dry contact board provides input dry contacts and output dry contacts.
Fig.1- 4: Front Panel of Bypass Module (Include Interface of Dry Contact)
1.7.2 Dry Contact Interface: Battery and Environmental Temperature Detection (J2 / J3)
The input dry contact J2 and J3 detect the temperature of batteries and environment respectively which can be used in environment monitoring and
battery temperature compensation.
J2 and J3 interfaces diagram are shown in fig.1-5 and the description of interface is in table.1-3.
Fig.1- 5: Diagram of J2 and J3 Dry Contact of Temperature Detection
Table.1- 3: Description of Input Dry Contact
Position
Name
Purpose
J2.1 TEMP_BAT Battery temperature detection
J2.2
/
Battery temperature detection
J3.1
TEMP_ENV
Environment temperature detection
J3.2 / Environment temperature detection
Note: Specified temperature sensor is required for temperature detection (R25=5Ohm B25/50=3275) please confirm with the
manufacturer or contact local maintenance engineers when placing an order.
1.7.3 Dry Contact Interface: Remote EPO Input Port (J4)
The UPS has an Emergency Power OFF (EPO) function. This function can be activated by pressing a button on the control panel of the UPS or
through a remote contact provided by the user. The EPO pushbutton is protected by a hinged plastic cover.
J4 is the input port for remote EPO. It requires shorting NC and +24v during normal operation and the EPO is triggered when opening NC and +24v

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or shorting NO and +24v. The port diagram is shown in fig.1-6 and port description is shown in table.1-4.
Fig.1- 6: Diagram of input dry contact for remote EPO
Table.1- 4: Description of Input Dry Contact for Remote EPO
Position Name Purpose
J4.1 EPO_NC EPO is activated when disconnecting fromJ4.2
J4.2
＋ 24V +24V, connect the common terminal of NC and NO
J4.3 EPO_NO EPO is activated when shorting with J4.2
The EPO is triggered when shorting pin 2 and 3 or opening pin 2 and 1 of J4.
If an external emergency stop facility is required it is connected via the reserved terminals of J4. The external emergency stop facility needs to use
shielded cables to connect to the normally open/closed remote stop switch between these two pins. If this facility is not used then pin 3 and pin 4 of
J4 must be open or pin 1 and pin 2 of J4 must be shorted.
Note
1. The emergency stop action within the UPS will shut down the rectifier inverter and static bypass. However it does not internally
disconnect the mains input power supply. To disconnect ALL power to the UPS open the upstream input circuit breaker(s) when the EPO is
activated.
2. Pin 1 and 2 of J4 have been shorted before the UPS is delivered.
3. All auxiliary cables must be double insulated twisted cables with cross sectional area of 0.5mm2 ~ 1.5mm2 for maximum connection
length between 25m and 50m.
1.7.4 Dry Contact Interface: Generator Input (J5)
J5 is the status interface for generator connection. Connect J5-2 with J5-1 and it indicates that the generator has been connected with the system.
The interface diagram is shown in fig.1-7 and interface description is shown in table.1-5.

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Fig.1- 7: Connection of Generator
Table.1- 5: Description of Status Interface and Connection of Generator
Position Name Purpose
J5.1
+24V
Internal
+24V power supply
J5.2
GEN
Connection status of generator
J5.3 GND Power ground
Note
All auxiliary cables must be double insulated twisted cables with cross sectional area of 0.5mm2 ~ 1.5mm2 for maximum connection length
between 25m and 50m.
1.7.5 Dry Contact Interface: Battery Circuit Beaker Input Port (J6 / J7)
J6 and J7 are the ports of BCB. The diagram is shown in fig.1-8 and description is shown in table.1-6.
Fig.1- 8: BCB Interface
Table.1- 6: Description of BCB Interface
Position
Name
Description
J6.1
BCB_DRV
BCB actuating signal provide the actuating
signal of +24V 20mA
J6.2 BCB_CONT BCB contact status connect with the normally open signal of BCB
J7.1
GND
Common connection
J7.2
BCB_ONL
BCB on
-
line
–
input (normally open) BCB is on
-
line when the signal is connecting with GND

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Note
All auxiliary cables must be double insulated twisted cables with cross sectional area of 0.5mm2 ~ 1.5mm2 for maximum connection length
between 25m and 50m.
1.7.6 Dry Contact Interface: Battery Warning Output (J8)
J8 is the output dry contact interface which outputs the battery warnings of low or excessive voltage when the battery voltage is lower than set
value an auxiliary dry contact signal will be provided via the isolation of a relay. The interface diagram is shown in fig.1-9 and description is shown in
table.1-7.
Fig.1- 9: Battery Low Warning Dry Contact
Table.1- 7: Battery warning dry contact interface description
Position
Name
description
J8.1 BAT_LOW_NC Battery warning relay (normally closed) will be open during warning
J8.2
BAT_LOW_NO
Battery warning relay (normally open) will be closed during warning
J8.3
GND
Commo
n
connection
1.7.7 Dry Contact Interface: Integrated Warning Output (J9)
J9 is the integrated warning output dry contact interface when one or more than one present warning is triggered the system will send integrated
warning information and provide an auxiliary dry contact signal via the isolation of a relay. The interface diagram is shown in fig.1-10 and description
is shown in table.1-8.
Fig.1- 10: Integrated warning dry contact

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Table.1- 8: Integrated warning dry contact interface description
Position Name Purpose
J9.1 ALARM_NC Integrated warning relay (normally closed) will be open during warning
J9.2 ALARM_NO Integrated warning relay (normally open) will be closed during warning
J9.3 GND Common connection
Note
All auxiliary cables must be double insulated twisted cables with cross sectional area of 0.5mm2 ~ 1.5mm2 for maximum connection length
between 25m and 50m.
1.7.8 Dry Contact Interface: Mains Failure Warning Output (J10)
J10 is the output dry contact interface for utility failure warning when the utility fails the system will send a utility failure warning information and
provide an auxiliary dry contact signal via the isolation of a relay. The interface diagram is shown in fig.1-11 and description is shown in table.1-9.
Fig.1- 11: Utility Failure Warning Dry Contact
Table.1- 9: Description of Mains failure warning dry contact
Position
Name
Purpose
J
10
.1
UTI_FAIL_NC
Mains failure warning relay(normally closed) will be
open during warning
J10.2 UTI_FAIL_NO Mains failure warning relay (normally open) will be closed during warning
J
10
.3
GND
Common connection
Note
All auxiliary cables must be double insulated twisted cables with cross sectional area of 0.5mm2 ~ 1.5mm2
for maximum connection length
between 25m and 50m.