CyberPower SM20KPM, SM200KMF, SM060KMF, SM120KMF 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 Checking ....................................................................................................... 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 the 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 the 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 Drawing ........................................................................................ 25

Chapter 5 Operation ......................................................................................................... 31

5.1 Introduction ......................................................................................................... 31

5.1.1 Split-Bypass Input....................................................................................... 31

5.1.2 Static Transfer Switch ................................................................................. 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 the 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 Switches .......................................................................................... 35

6.2 UPS Startup .......................................................................................................... 35

6.2.1 Start-Up Procedure .................................................................................... 35

6.2.2 Procedures for Switching Between Operation Modes............................... 36

6.3 Procedure for Switching the UPS between Maintenance Bypass and Normal

Mode .......................................................................................................................... 37

6.3.1 Procedure for Switching from Normal Mode to Maintenance Bypass Mode

............................................................................................................................. 37

6.3.2 Procedure for Switching 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 Changing the 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 Path .................................................................................... 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 Characteristics ............................................................................. 49

9.3 Mechanical Characteristics .................................................................................. 49

9.4 Electrical Characteristics (Input Rectifier) ............................................................ 50

9.5 Electrical Characteristics (Intermediate DC Link) ................................................. 50

9.6 Electrical Characteristics (Inverter Output) ......................................................... 50

9.7 Electrical Characteristics (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: The 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 without Door ..... 26

Fig.4- 4: 120KVA UPS Module System, Front View and Rear View without Door ..... 26

Fig.4- 5: 60KVA UPS Module System, Front View and Rear View without 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 with European and International Standards ........................ 49

Table.9- 2: Environmental Properties ........................................................................ 49

Table.9- 3: Mechanical 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 Exchange ............................................................................ 52

Chapter 1 Installation

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)

Note: The UPS should be installed on a cement surface or other surface that is not combustible.

Chapter 1 Installation

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.
Note: Care must be taken when handling units fitted with batteries. Keep such moves to a minimum.

Chapter 1 Installation

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

Chapter 1 Installation

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.

Chapter 1 Installation

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.
Note: 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
(120KVA).

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.

Chapter 1 Installation

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.

Note: 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

Chapter 1 Installation

Modular UPS SM series User Manual 15



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,

Chapter 1 Installation

Modular UPS SM series User Manual 16

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.

Chapter 1 Installation

Modular UPS SM series User Manual 17

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

Chapter 1 Installation

Modular UPS SM series User Manual 18

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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Modular UPS SM series User Manual 19

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

J10.1 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

J10.3 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.

Chapter 2 Battery Installation

Modular UPS SM series User Manual 20

Chapter 2 Battery Installation

2.1 General Recommendations

Take special care when operating the batteries of the Modular UPS system. When all the battery cells are connected, the battery voltage
can exceed 400Vdc, which is potentially lethal.

Note

The precautions for battery installation, use and maintenance are to be provided by the batteries manufacturers. The precauti

ons in this section

include the key issues that must be considered during the installation design, which may be adjusted according to the specific local situations.

Battery Room Design



The battery shall be installed and stored in a clean, cool and dry environment.



Do not install the battery in a sealed battery chamber or sealed room. The battery room ventilation shall at least meet the requirement of
EN50272-2001. Otherwise, battery bulging, fire and even human injury may be caused.



The battery shall be installed far away from the heating source (e.g. transformer). Do not use or store the battery in the place near the
heating source or burn the battery or place it into fire. Otherwise, battery leakage, bulging, fire or explosion may be caused.



Batteries shall be placed in such a manner that two bare live parts with the potential difference of more than 150V shall not be contacted
at the same time. If it is unavoidable, insulated terminal cover and insulated cables shall be used for connection.



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.

Battery Handling

When connecting the battery, follow the precautions for high-voltage operation



Before accepting and using the battery, check the appearance the battery. If the package is damaged, or the battery terminal is dirty,
corroded or rusted or the shell is broken, deformed or has leakage, replace it with new product. Otherwise, battery capacity reduction,
electric leakage or fire may be caused.

 Before operating the battery, remove the finger ring, watch, necklace, bracelet and any other metal jewelry
 Wear rubber gloves.
 Eye protection should be worn to prevent injury from accidental electrical arcs.
 Only use tools (e.g. wrench) with insulated handles.



The batteries are very heavy. Please handle and lift the battery with proper method to prevent any human injury or damage to the battery
terminal.



Do not decompose, modify or damage the battery. Otherwise, battery short circuit, leakage or even human injury may be caused.



The battery contains sulfuric acid. In normal operation, all the sulfuric acid is attached to the separation board and plate in the battery.
However, when the battery case is broken, the acid will leak from the battery. Therefore, be sure to wear a pair of protective glasses,
rubber gloves and skirt when operating the battery. Otherwise, you may become blind if acid enters your eyes and your skin may be
damaged by the acid.



At the end of battery life, the battery may have internal short circuit, drain of electrolytic and erosion of positive/negative plates. If this
condition continues, the battery may have temperature out of control, swell or leak. Be sure to replace the battery before these
phenomena happen.



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.

Chapter 2 Battery Installation

Modular UPS SM series User Manual 21

2.2 Battery Typologies



Traditional: consisting of one of more strings of battery blocks installed on shelves in a locked cabinet or dedicated battery room.

Note

The Traditional external battery cabinet can make use of each even number of battery per string between 36 and 44.
The default factory setting, if the unit is ordered w/o internal battery is 40.
The cabinet is only for valve regulated maintenance-free lead-acid battery.
CAUTION: The lead acid battery may cause chemistry hazard

2.2.1 Battery Installation

Only the qualified engineers are allowed to install and maintain mounted in a traditional battery cabinet or shelf. To ensure safety, install the external
battery in a locked cabinet or dedicated battery room accessible just to service qualified personnel.
Please note that number of cells set via software must be consistent with the actual number of cells.
A minimum space of 10mm must be reserved on all vertical sides of the battery block to permit free air movement around the cells.
A certain clearance should be reserved between the top of the cells and the underside of the shelf above as this is necessary for monitoring and
servicing the cells.
When installing the batteries always work from the bottom shelf upwards to prevent raising the center of gravity.
Install the batteries reliably and avoid vibration and mechanical bumping.
The bending radius of cable should be more than 10D, where "D" is the outer diameter of cable.
When connecting the cable, do not cross the battery cables and do not bind the battery cables together. The battery connection must be firm and
reliable. After the connection, all the connections between the wiring terminals and the batteries must be corrected to meet the torque requirement
provided in the specifications and user manuals of the battery manufacturers.
Each battery terminal should be insulated after its connection has been made.
Check if the battery is unexpectedly grounded. If the battery is unexpectedly grounded, remove the earth power supply. Contacting any part of the
grounded earth may be subject to electric shock.
Measure the battery voltage, and carry out battery voltage calibration after the UPS is started.

Warning: Battery connections

When using a

traditional battery solution, always comply with the following precautions:



Disconnect the charging power before connecting or disconnecting the cable of the battery terminals.



Do not connect the cables between the UPS battery terminals and the batteries before getting the approval from the commissioning
engineer.



When connecting the cables between the battery terminals and the circuit breaker, always connect the circuit breaker end of the cable
first.



Be sure to connect the positive/negative terminals of the batteries to circuit breakers and circuit breakers to the UPS respectively with
reference to the markings of positive/negative terminals. Reverse connection of battery polarities will result in explosion, fire accident, the
damage of batteries and UPS, and human injury.



The battery connecting terminal shall not subject to any external force, such as the pulling force or twisting force of the cable. Otherwise,
the internal connection of the battery may be damaged, and in severe case, the battery may catch fire.



Do not connect power until the total voltage of the battery string is verified correct through measurement.



Do not connect any conductor between the positive and negative terminals of the battery.



Do not close the battery circuit breakers before getting the approval from the commissioning engineer.

Chapter 2 Battery Installation

Modular UPS SM series User Manual 22

2.2 Battery Maintenance

For the battery maintenance and precautions, please refer to IEEE-Std-1188-2005 and the relevant manuals provided by the battery manufacturers.

Battery Maintenance Note



Check to ensure that all the safety devices are in place and function normally. Check if the battery management parameter setting is normal
particularly.



Measure and record the air temperature in the battery room.



Check if the battery terminals are damaged or have the symptom of heating, and if the shell or cover is damaged.



Please fasten every bolt on the terminal according to the fastening torque specified in the table below.



After 1-2 months of service, recheck to make sure that each screw has been fastened according to the specified torque. Otherwise there is
risk of fire.



CAUTION: Use the battery with the same capacity and type, if battery is replaced by an incorrect type, it can cause explosion.



CAUTION: Dispose of used battery according to the local instructions

Chapter 3 Installation of UPS Rack System and Parallel System

Modular UPS SM series User Manual 23

Chapter 3 Installation of UPS Rack System and Parallel System

3.1 Overview

The single or parallel system should be installed according to the installation procedures of the UPS rack module system and the requirements in
this Chapter.
For single UPS rack module installation the EPO button on the front panel of the UPS rack controls the emergency stop of UPS modules and bypass
static switch and also supports remote emergency power off function that can be used to shut down the UPS rack module remotely.

Note

1. The remote EPO switch must provide normally open or normally closed dry contact signals.

2. The open circuit voltage is 24Vdc, and the current is less than 20mA.

3. Normally closed EPO-J4 terminals: Pin 1 and pin 2 have been connected in factory and located on the dry contact board GJ.

UPS1

Dry contact board GJ

J4-2

J4-3

UPS1

Dry contact board GJ

J4-2

J4-3

UPS2

Dry contact board GJ

J4-2

J4-3

Fig.3- 1: Circuit ram of EPO

3.2 UPS Rack Modules in Parallel System

The basic installation procedures of parallel system are the same with those of the UPS rack module system. In this section, only the installation
procedures related to the parallel system are introduced.

3.2.1 Installation of Cabinet

To make the maintenance and system test easier, an external maintenance bypass is recommended in the installation.

3.2.2 External Protective Devices

Refer to Chapter 1 Installation

Chapter 3 Installation of UPS Rack System and Parallel System

Modular UPS SM series User Manual 24

3.2.3 Power Cables

The power cable connection of the parallel rack module system is similar to that of the single UPS rack module system. If the bypass input and
rectifier input share the same neutral terminal and if an RCD protective device is installed at the input, then the RCD device must be installed before
the input cables are connected to the neutral terminal. Refer to Chapter 1 Installation
Note: The length and specification of the power cables of each UPS module should be the same, including the bypass input cables and UPS output
cables, so that the load sharing effect can be achieved in bypass mode.

3.2.4 Parallel Signal Board

Installation of parallel signal board

The parallel signal board BJ is installed at the rear of the static switch power module. Refer to fig.3-2,

(a) (b)

Fig.3- 2: Installation of Parallel Signal Board BJ



Remove cable W102 as fig.3-2(a)



Install parallel signal board BJ as fig.3-2(b)



Connect cable 1 and cable 2 as fig.3-2(b)

3.2.5 Control Cables

Parallel control cable

The parallel control cables are designed to be shielded and double insulated, and are connected between the UPS rack modules to form a loop as
shown below. The parallel signal board BJ is installed at the rear of the static switch power module. This close loop connection ensures the reliability
of the parallel system control. Refer to fig. 3-3

Fig.3- 3: Connection of Parallel Control Cables of “1+N” System

Chapter 4 Installation Drawing

Modular UPS SM series User Manual 25

Chapter 4 Installation Drawing

Input

Output

Bypass(Option)

External Batt.

+ N -

Dry Contact Board GJ

Fig.4- 1: Wiring Diagram

BCB_DRV

BCB_CONT

J6

J7

BCB_ONL

+24V

+24V

+24V

Fig.4- 2: External Battery Connection

Chapter 4 Installation Drawing

Modular UPS SM series User Manual 26



External BCB interface:

BCB DRV: J6-1 BCB drive signal
BCB STATUS: J6-2 BCB contactor status, normally opened. Shorted to GND when activated
GND: J7-1 ground

Fig.4- 3: 200KVA UPS Module System, Front View and Rear View without Door

Fig.4- 4: 120KVA UPS Module System, Front View and Rear View without Door

Chapter 4 Installation Drawing

Modular UPS SM series User Manual 27

Fig.4- 5: 60KVA UPS Module System, Front View and Rear View without Door

Fig.4- 6: 200KVA UPS External Dimensions

Top view

Chapter 4 Installation Drawing

Modular UPS SM series User Manual 28

Fig.4- 7: 120KVA UPS External Dimensions

Fig.4- 8: 60KVA UPS External Dimensions

Chapter 4 Installation Drawing

Modular UPS SM series User Manual 29

(a) 200KVA UPS power connection

(b) 120KVA UPS power connection

(c) 60KVA UPS power connection

Fig.4- 9: Power Connection of Module System UPS

Fig.4- 10: Power Module

Chapter 4 Installation Drawing

Modular UPS SM series User Manual 30

Fig.4- 11: Static Bypass Module

Notes for installing modules:

1. When installing the modules, install the modules from bottom to top. When removing the modules, remove the modules from top to bottom. The
purpose is to maintain the stable center of gravity.

2. After inserting the module, tighten all the screws.

3. When removing the modules, turn off modules first, remove the screws and then remove the modules.

4. Wait for 5 minutes before inserting the removed modules.

Chapter 5 Operation

Modular UPS SM series User Manual 31

Chapter 5 Operation

Warning: Hazardous mains voltage and/or battery voltage present(s) behind the protective cover

The components

that can only be accessed by opening the protective cover with tools cannot be operated by user. Only qualified service

personnel are authorized to remove such covers.

5.1 Introduction

The Modular UPS rack system provides the critical load (such as communication and data processing equipment) with high quality uninterruptible AC
power. The power from the UPS is free from voltage and frequency variations and disturbances (interruption and spike) experienced at the Mains AC
input supply.
This is achieved through high frequency double conversion power pulse width modulation (PWM) associated with fully digital signal processing
control (DSP), which features high reliability and convenience for use.
As shown in fig.5-1, the AC input mains source is supplied at UPS input and converted into a DC source. This DC source feeds the Inverter that
converts the DC source into a clean and input independent AC source. The battery powers the load through the inverter in case of an AC input mains
power failure. The utility source can also power the load through the static bypass.
When the UPS needs maintenance or repair, the load can be transferred to maintenance bypass without interruption and the power module and
bypass module can be removed for maintenance.

REC INV

BAT

CHARGER

REC INV

BAT

CHARGER

BCB

Battery Module

BCB

bA
bB
bC

Optional

mA
mB
mC
mN

Batt+

BattN

Batt-

oA
oB
oC
oN

Power Module 1#

Power Module 10#

Bypass Module

Maintenance Bypass

Fig.5- 1: Single Unit Block Diagram

5.1.1 Split-Bypass Input

Fig. 5-1 illustrates the Modular UPS in what is known as the split-bypass configuration (that is, the bypass uses a separate AC source). In this
configuration, the static bypass and maintenance bypass share the same independent bypass power supply and connect to the power supply

Chapter 5 Operation

Modular UPS SM series User Manual 32

through a separate switch. Where a separate power source is not available, the bypass and rectifier input supply connections are linked.

Note

Split-Bypass Input function is optional.

Default of factory is single input.

5.1.2 Static Transfer Switch

The circuit blocks labeled Static Switch in fig.5-1 contain electronically controlled switching circuits that enable the critical load to be connected to
either the inverter output or to a bypass power source via the static bypass line. During normal system operation the load is connected to the inverter;
but in the event of a UPS overload or inverter failure, the load is automatically transferred to the static bypass line. To provide a clean (no-break) load
transfer between the inverter output and static bypass line, the inverter output and bypass supply must be fully synchronized during normal operating
conditions. This is achieved through the inverter control electronics, which makes the inverter frequency track that of the static bypass supply,
provided that the bypass remains within an acceptable frequency window.
A manually controlled maintenance bypass supply is incorporated into the UPS design. It enables the critical load to be powered from the utility
(bypass) supply while the UPS is shut down for routine maintenance.

Note

When the UPS is

operating in bypass mode or on maintenance bypass, the connected equipment is not protected from power failures or surges

and sags.

5.2 1+1 Parallel System

Several “single unit” UPS modules may constitute a “1+1” system, where up to two single units operate together for the purpose of providing
additional power or reliability or both. The load is equally shared between any paralleled UPSs.
In addition, two UPS modules or 1+1 groups may be configured as “distributed redundant” systems. Each UPS module or system has independent
outputs that nevertheless are synchronized through a Load Bus Synchronizer (LBS) so that critical loads can be seamlessly transferred from one
system to another. See 5.3 Operating Mode for more information.

5.2.1 Features of Parallel System

1. The hardware and firmware of single module UPS units are completely compatible with the requirements of a parallel system. Parallel
configuration can be achieved merely through settings in configuration software. The parameters settings for the modules in parallel system shall be
consistent.

2. Parallel control cables are connected in a ring, providing both performance and redundancy. Dual-bus control cables are connected between any
two UPS modules of each bus. The intelligent paralleling logic provides the user with maximum flexibility. For example, shutting down or starting up
UPS modules in a parallel system can be done in any sequence. Transfers between Normal and Bypass modes of operation are synchronized and
self–recovering e.g. following overloads and their clearance.

3. The total load of the parallel system can be queried from each module’s LCD.

5.2.2 Parallel Requirements of UPS Modules

A group of paralleled modules behave as if it were one large UPS with the advantage of presenting higher reliability. In order to assure that all
modules are equally utilized and to comply with relevant wiring rules, the following requirements apply:

1. All UPS modules shall be of the same rating and must be connected to the same bypass source.

2. The bypass and the main input sources must be referenced to the same neutral potential.

3. Any RCD (Residual Current detecting device), if installed, must be of an appropriate setting and located upstream of the common neutral bonding
point. Alternatively, the device must monitor the protective earth currents of the system. Refer to the High Leakage Current Warning in the first part of
this manual.

4. The outputs of all UPS modules must be connected to a common output bus.

5. It is strongly recommended that each paralleled UPS install at least a redundant power module

Chapter 5 Operation

Modular UPS SM series User Manual 33

Note

Optional isolation transformers are available for applications where sources do not share the same neutral reference or where

the neutral is not

available.

5.3 Operating Mode

The Modular UPS is an on-line, double-conversion, reverse-transfer UPS that permits operation in these modes:



Normal mode



Battery Mode



Auto-restart mode



Bypass mode



Cold start mode



Maintenance mode (manual bypass)



Parallel redundancy mode



Eco Mode

5.3.1 Normal Mode

The UPS inverter power modules continuously supplies the critical AC load. The rectifier/charger derives power from the AC mains input source and
supplies DC power to the inverter while simultaneously FLOAT or BOOST charging its associated backup battery.

5.3.2 Battery Mode

Upon failure of the AC mains input power; the inverter power modules, which obtains power from the battery, supplies the critical AC load. There is
no interruption in power to the critical load upon failure. After restoration of the AC mains input power, the “Normal Mode” operation will continue
automatically without the necessity of user intervention.

5.3.3 Auto-Restart Mode

The battery may become exhausted following an extended AC mains failure. The inverter shuts down when the battery reaches the End of Discharge
voltage (EOD). The UPS may be programmed to “Auto Recovery after EOD” after a delay time if the AC mains input recovers. This mode and any
delay time are programmed by the commissioning engineer.

5.3.4 Bypass Mode

If the inverter overload capacity is exceeded under normal mode, or if the inverter becomes unavailable for any reason, the static transfer switch will
perform a transfer of the load from the inverter to the bypass source, with no interruption in power to the critical AC load. Should the inverter be
asynchronous with the bypass, the static switch will perform a transfer of the load from the inverter to the bypass with power interruption to the load.
This is to avoid large cross currents due to the paralleling of unsynchronized AC sources. This interruption is programmable but typically set to be
less than 3/4 of an electrical cycle, e.g., less than 15ms (50Hz) or less than 12.5ms (60Hz).

5.3.5 Cold Start Mode

If there is no utility input and want UPS to start from battery mode, UPS can start up from Cold start mode

5.3.6 Maintenance Mode (Manual Bypass)

A manual bypass switch is available to ensure continuity of supply to the critical load when the UPS becomes unavailable e.g. during a maintenance
procedure.

5.3.7 Parallel Redundancy Mode (System Expansion)

For higher capacity or higher reliability or both, the outputs of several UPS modules can be programmed for direct parallel while a built-in parallel
controller in each UPS ensures automatic load sharing. A parallel system can be composed of up to two UPS modules.

Chapter 5 Operation

Modular UPS SM series User Manual 34

5.3.8 Eco Mode

To improve system efficiency, UPS rack system works in bypass mode at normal time, and inverter is standby. When utility fails, UPS transfer to
battery mode, and inverter power the loads. The efficiency of ECO system can be up to 98%.
NOTE: There is a short interruption time (lower than 10ms) when transfer from ECO mode to battery mode, it must be sure that the time has no
effect on loads.

5.4 Battery Management—Set During Commissioning

5.4.1 Normal Function

1. Constant Current Boost Charging

Current can be set up as 0%~20%, default setting is 10%.

2. Constant Voltage Boost Charging

Voltage of boost charging can be set as required by the type of battery.
For Valve Regulated Lead Acid (VRLA) batteries, maximum boost charge voltage should not exceed 2.4V / cell.

3. Float Charge

Voltage of float charging can be set as required by the type of battery.
For VRLA, float charge voltage should be between 2.2V to 2.3V, default setting is 2.25V.

4. Float Charge Temperature Compensation (optional)

A coefficient of temperature compensation can be set as required by the type of battery.

5. End of Discharge (EOD) Protection

If the battery voltage is lower than the EOD, the battery converter will shut down and the battery is isolated to avoid further battery discharge. EOD is
adjustable from 1.6V to 1.75V per cell (VRLA).

5.4.2 Advanced Functions (Software Settings Performed by the Commissioning Engineer)

Battery self-test and self-service

At periodic intervals, 25% of the rated capacity of the battery will be discharged automatically, and the actual load must exceed 25% of the rated
UPS (kVA) capacity. If the load is less than 25%, auto-discharge cannot be executed. The periodic interval can be set from 720 to 3000 hours.
Conditions: Battery at float charge for at least 5 hours, load equal to 25~100% of rated UPS capacity Trigger—Manually through the command of
Battery Maintenance Test in LCD panel or automatically Battery self-test interval.

5.5 Battery Protection (Settings by Commissioning Engineer)

Battery Low Pre-warning

The battery under-voltage pre-warning occurs before the end of discharge. After this pre-warning, the battery should have the capacity for 3
remaining minutes discharging with full load. And the

End of discharge (EOD) protection

If the battery voltage is lower than the EOD, the battery converter will be shut down. EOD is adjustable from 1.6V to 1.75V per cell (VRLA).

Battery Disconnect Devices Alarm

The alarm occurs when the battery disconnect device disconnects. The external battery connects to the UPS through the external battery circuit
breaker. The circuit breaker is manually closed and tripped by the UPS control circuit.

Chapter 6 Operating Instructions

Modular UPS SM series User Manual 35

Chapter 6 Operating Instructions

Warning-Hazardous mains voltage and/or battery voltage present(s) behind the protective cover

The components that can only be accessed by opening the protective cover with tools cannot be operated by user. Only qualifie

d service

personnel are authorized to remove such covers.

6.1 Introduction

The Modular UPS operates in the following 3 modes listed in table.6-1. This section describes various kinds of operating procedures under each
operating mode, including transfer between operating modes, UPS setting and procedures for turning on/off inverter.

Tab.6-1: UPS Operating mode

Operating mode Descriptions

Normal mode

UPS powers the load

Bypass mode

The load power supply is provided by the static bypass. This mode can be regarded as a temporary transition

mode

between the normal mode and maintenance bypass mode, or a temporary abnormal operating status

Maintenance mode

UPS Shuts down, the load is connected to the mains vie Maintenance bypass. NOTE: in this mode the load is not

protected against abnormal mains

Note:

1. Refer to Chapter 7 Operator Control and Display Panel, for all the user operating keys and LED displays.

2. The audible alarm may annunciate at various points in these procedures.

3. The UPS function can be set via maintenance software. However, the setting and commissioning must be done by maintenance engineers trained.

6.1.1 Power Switches

The UPS rack system has a maintenance bypass breaker, a main input breaker and output breaker, and all the other transfers are processed
automatically by internal control logics.

6.2 UPS Startup

Do not start the UPS until the installation is completed, the system has been commissioned by authorized personnel and the external power isolators
are closed.

6.2.1 Start-Up Procedure

This procedure must be followed when turning on the UPS from a fully powered down condition.
The operating procedures are as follows:

1. Open the external power switch. Open the internal power switch. Open the UPS door, connect the power supply cables and ensure the correct

phase rotation.

Warning

During this procedure the UPS output terminals are live. If any load equipment are connected to the UPS output terminals please check with the
load user that it is safe to apply power: If the load is not ready to receive power then ensure that it is safely isolated from the UPS output
terminals.

2. Close the output circuit breaker (Q3). Close the mains input circuit breaker (Q1) and connect the mains power. The LCD starts up at

this time. The Rectifier indicator flashes during the startup of rectifier. The rectifier enters normal operation state, and after about 20s, the
rectifier indicator goes steady green. After initialization, the bypass static switch closes. The UPS Mimic LEDs will indicate as following:

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Modular UPS SM series User Manual 36

LED Status

Rectifier indicator Green

Battery indicator Red

Bypass indicator Green

Inverter Indicator Off

Load indicator Green

Status indicator Green

Note

The output circuit breaker (Q3) must be closed first, followed by input circuit breaker (Q1), or the rectifier cannot

be started.

3. The inverter starts up automatically. The inverter indicator flashes during the startup of inverter. After about 1minute, the inverter is ready,

the UPS transfers from bypass to inverter, the bypass indicator turns off, and the inverter and load indicators turn on. The UPS is in normal
mode. The UPS Mimic LEDs will indicate as following:

LED St

atus

Rectifier indicator Green

Battery indicator Red

Bypass indicator Off

Inverter Indicator Green

Load indicator Green

Status indicator Green

4. Close external battery switch, battery indicator turns off, a few minutes later the battery will be charged by UPS. The UPS Mimic LEDs will

indicates as following:

LED Status

Rectifier indicator Green

Battery indicator Green

Bypass indicator Off

Inverter Indicator Green

Load indicator Green

Status indicator Green

6.2.2 Procedures for Switching Between Operation Modes

Switch from normal mode to bypass mode

Press “Transfer bypass” menu in menu to switch to bypass mode.

Note

In bypass mode, the load is directly fed by the mains power instead of the pure AC power from the inverter.

Switch from bypass mode to normal mode

Press “Escape bypass” menu in bypass mode. After inverter enters normal operation, UPS transfers to normal mode.

Battery Start



Verify that the battery is properly connected.



Press the cold start-up button (see as fig.6-1) under the rectifier input circuit breaker for 1 seconds



At this point, the LCD displays the start screen, press cold start-up button again. And the battery indicator flashes green. It stops flashing and
becomes solid green about 10 seconds after the rectifiers enter normal operation.



The inverter starts up automatically, the green inverter indicator flashes. The UPS works in battery mode after 60 seconds.

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Modular UPS SM series User Manual 37

Fig.6- 1: Location of Battery Cold Start Button

6.3 Procedure for Switching the UPS between Maintenance Bypass and
Normal Mode

6.3.1 Procedure for Switching from Normal Mode to Maintenance Bypass Mode

This procedure can transfer the load from the UPS inverter output to the maintenance bypass supply, but the precondition is that the UPS is in
normal mode before the transfer.

Caution

Before making this operation, read messages on display to be sure that bypass supply is regular and the inverter is synchrono

us with it, so as not

to risk a short interruption in powering the load.

1. Press the “Transfer Bypass” menu in on the right side of the LCD. The UPS Mimic indicator Inverter will green flash and also the Status

Indicator will turn red and will be accompanied by an audible alarm. The load transfers to static bypass, and the inverter standby.

Note

Pressing the Alarm Silence button cancels the audible alarm but leaves the warning message displayed until the alarm condition is rectified.

2. Open the UPS front door, and close the maintenance bypass breaker (Q2) from OFF to ON position. The load power supply is provided by the

manual maintenance bypass.

3. Press EPO to make sure the charge current is 0. Open the mains input breaker (Q1) and output breaker (Q3), open the external battery

breaker.

Warning

If you need to maintain the module, wait for 10 minutes to let the DC bus capacitor fully discharge before removing corresponding module.
When the maintenance bypass switch is on position of ON, some part of the UPS circuit still has hazardous voltage. Therefore, only qualified
person can maintain the UPS.

Note

When the UPS is in maintenance bypass mode, the load is not protected against abnormal mains supply.

6.3.2 Procedure for Switching from Maintenance Mode to Normal Mode

1. Close output breaker (Q3). Close mains input breaker (Q1). The LCD starts up at this time. The Rectifier indicator flashes during the startup

of rectifier. The rectifier enters normal operation state, and after about 20s, the rectifier indicator goes steady green. After initialization, the
bypass static switch closes.

2. Open the manual maintenance breaker (Q2).

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Modular UPS SM series User Manual 38

Warning

Before opening the maintenance breaker (Q2), make sure that static bypass switch is working according power flow displayed on

LCD.

3. After about 60s, UPS transfers to inverter. Close external battery breaker.

6.4 Procedure for Completely Powering Down a UPS

If you need to power down the UPS completely, follow the procedures as:



Press EPO button on the right side of operation panel



Open external battery breaker and internal battery breaker



Open mains input breaker (Q1) and output breaker (Q3)

If you need to isolate the UPS from the AC power supply, you should open the external input power supply isolation first (if the rectifier and bypass
use different power supply, you need to open these two input isolation respectively).

6.5 Emergency Power Off (EPO) Procedure

The EPO button is designed to switch off the UPS in emergency conditions (e.g., fire, flood, etc.).To achieve this, just press the EPO button, and the
system will turn off the rectifier, inverter and stop powering the load immediately (including the inverter and bypass), and the battery stops charging
or discharging.
If the input utility is present, the UPS control circuit will remain active; however, the output will be turned off. To completely isolate the UPS, you need
to open the mains input breaker and battery breaker.

6.6 Auto Start

Commonly, the UPS rack is start up on static bypass. When the mains power fails, the UPS draws power from the battery system to supply the load
until the battery voltage reaches the end of discharge (EOD) voltage, and the UPS will shut down.
The UPS will automatically restart and enable output power:



After the mains power is restored



If the Auto Recovery after EOD Enabling feature is enabled

6.7 UPS Reset Procedure

After using EPO to shut down the UPS, operates as following to restore UPS:



Shutdown UPS completely



Start UPS as section 6.2.1

After the UPS is shut down due to inverter over temperature, or overload, or too many switching times, UPS will reset the fault automatically when
fault is cleared.

Note

The rectifier will be turned on automatically when the over temperature fault disappears after the disappearance of over temperature signals.

After pressing the EPO button, if the UPS mains input has been disconnected, the UPS is completely powered down. When the UPS mains input is
restored, the EPO condition will be cleared and the UPS system will enable static bypass mode to restore the output.

Warning

If the maintenance bypass breaker is put to ON and the UPS has mains input

, then the UPS output is energiz

ed.

6.8 Operation Instruction for Power Module Maintenance

Only a trained operator can perform the following procedures

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Modular UPS SM series User Manual 39

Maintenance guidance for power modules

If the system is normal mode and the bypass is normal, the redundant number of power module is at least 1:

1. Press “off” button on the front panel of power module to manually power off power module.

2. Loosen the screws of the main power module and remove the module after 2 minutes.
If there are no redundant power modules:

1. Transfer to bypass mode.

2. Loosen the screws of the main power module and remove the module after 2 minutes.

Note

To ensure the safety, be sure to use a multi-meter to measure the DC bus capacitor voltage and ensure the voltage is below 60V before operation.

3. After finishing the maintenance of the power module, insert the main power module (the inserting interval for each module is longer than 10s),

the power module will automatically join the system operation, and then tighten the screws at the two sides of the power module.

Maintenance guidance for bypass power module

Note

The bypass power mo

dule cannot be maintained in battery mode.

If the system is in normal mode and the bypass is normal:

1. Manually shut down the inverter, and the UPS transfers to bypass. Close the maintenance bypass breaker and the UPS transfer to

maintenance bypass mode.

2. Press EPO button to ensure the battery current is 0. Open the battery circuit breaker or disconnect battery terminals.

3. Open mains input breaker and output breaker.

4. Remove the bypass power modules that need maintenance or repair, wait for 5 minutes and then maintain the bypass power modules. After

finishing the maintenance of the bypass power modules, insert the modules.

5. Transfer to normal mode as section 6.3.2.

Note

The terminal of bypass power module is big, and it need more power when inserting bypass

module to make sure tighten connection.

6.9 Language Selection

The LCD menus and data display are available in 4 languages: English, French, Simple Chinese, English, and Traditional Chinese.
Perform the following procedure to select a language needed:

1. In main menu, press in to enter in function setting menu in the LCD screen.

2. Select “Language” setting menu.

3. Select the language and make sure. At this time, all the words in the LCD will be displayed in the selected language.

6.10 Changing the Current Date and Time

To change system date and time:

1. In main menu, press to enter in function setting menu in the LCD screen.

2. Select “Time Set“.

3. Enter new date and time, then enter to confirm it.

6.11 Control Password 1

The system is password protected to limit the operator’s operating and control authorities. You can only operate and test the UPS and battery after
entering correct password 1. The default password 1 is 12345678.

Chapter 7 Operator Control and Display Panel

Modular UPS SM series User Manual 40

Chapter 7 Operator Control and Display Panel

This chapter introduces the functions and operation instructions of the parts on UPS operator control and display panel in detail, and provides
LCD display information, including LCD display types, detailed menu information, prompt window information and UPS alarm list.

7.1 Introduction

The operator control and display panel is located on the front panel of the UPS. Through the LCD panel, the operator can operate and control
the UPS, and check all measured parameters, UPS and battery status and event and alarm logs. The operator control panel is divided into
three functional areas as shown in fig.7-1: mimic current path, LCD display & Menu keys, and Control and Operation Keys. The detailed
description of parts on operator control and display panel is shown in table.7-1.

Fig.7- 1: UPS operator control and display panel

Table.7- 1: Description of UPS Operator Control and Display Panel

Indicator

Function

Button

Function

REC I/P Rectifier indicator

EPO EPO (emergency power off)

BATT. Battery indicator SELECT Select

BYP IP Bypass indicator ENTER Confirm

INV Inverter indicator ESC Exit

O/P LOAD Load indicator

UPS STATUS Status indicator

Chapter 7 Operator Control and Display Panel

Modular UPS SM series User Manual 41

7.1.1 Mimic Current Path

The LEDs shown on the mimic current path represent the various UPS power paths and show the current UPS operating status. The status
description of indicators is shown in table.7-2.

Table.7- 2: Status Description of Indicator

Indicator State Purpose

Rectifier
indicator

Steady green

Rectifier normal for all modules

Flashing green

Rectifier for at least on module normal, mains normal

Steady red Rectifier fault

Flashing red

Mains abnormal for at least one module

Off Rectifier not operating

Battery
indicator

Steady green Battery charging

Flashing green

Battery discharging

Steady red

Battery abnormal (battery failure, no battery or battery reverse) or battery converter abnormal

(failure, over current or over temperature) , EOD

Flashing

red Battery low voltage

Off Battery and battery converter normal, battery not charging

Bypass
indicator

Steady green Load power supplied by bypass

Steady red

Bypass power abnormal or out of normal range, or static bypass switch fault

Flashing red Bypass voltage abnormal

Off Bypass normal

Inverter
indicator

Steady green

Load power supplied by inverter

Flashing green Inverter On, start, synchronization of standby (ECO mode) for at least one module

Steady red

System power not supplied by inverter, inverter fault for at least one module.

Flashing red

System power supplied by inverter, inverter fault for at least one module.

Off Inverter not operating for all modules

O/P Load
indicator

Steady green

UPS output ON and normal

Steady red

UPS output overload and overtime, or output short, or output no power supply

Flashing red Overload output of UPS

Off No output of UPS

Status
indicator

Steady green

Normal operation

Steady red Failure

7.1.2 Audible Alarm (buzzer)

There are two different types of audible alarm during UPS operation as shown in table.7-3.

Table.7- 3: Description of Audible Alarm

Alarm Purpose

Two short alarm with a long
one

when system has general alarm (for example: AC fault), this audible alarm can be heard

Continuous alarm

When system has serious faults (for example: fuse or hardware fault), this audible alarm can be heard

7.1.3 Functional Keys

There are 4 functional keys on operator control and display panel, which are used together with LCD. The functions description is shown in table.7-4.

Table.7- 4: Functions of Functional Keys

Functional key Functions

EPO To cut off the load power to shut down the rectifier,

inverter, static bypass and battery

SELECT

Select

ENTER Confirm

ESC E

xit

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Modular UPS SM series User Manual 42

7.2 LCD Display Type

Following the self-check of UPS LCD display, the main LCD display is shown as fig.7-2, which can be divided into three display windows: system
information, data command and current record.

Fig.7- 2: Main LCD Display

The description of LCD icon is shown in table.7-5:

Table.7- 5: Description of LCD Icons

Icon Description

Bypass parameter

Main input parameter

History file, system information

Function setting (display calibration, password setting, time setting, date format, communication protocol and
language setting), system setting (used by product maintainers)

Battery data, battery parameter setting (used by service staff)

Test (battery self-test, battery maintenance)

Functional keys used by service staff (fault clearing, history file clearing, noise clearing, manual switch of bypass),

user’s setting (system mode, machine number, system ID, output voltage adjustment, frequency tracing speed,
frequency tracing limit)

Output parameter

Load condition

Noise clearing, noise clearing cancel

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Modular UPS SM series User Manual 43

7.3 Detailed Description of Menu Items

The LCD main display shown in fig.7-3 is described in details below.

UPS information window

UPS information window: display the current time and UPS name. The information of the window is not necessary for the user to operate. The
information of this window is given in table.7-6.

Table.7- 6: Description of Items in UPS System Information Window

Display contents Meaning

SM200/20

Rated information. 3 phases in 3 phases out, 200KVA cabinet and 20KVA power

module

N=03(P-1/2)

3 power modules in system, UPS works in parallel mode, 2 units in system, this is the

1# unit (S mean single unit)

12:00 Current Time (format: 24 hours, hour : minute)

(Status) Normal, alarm, fault

Normal: UPS in normal condition

Alarm: UPS has general alarm, such as AC input fault
Fault: UPS fuse or hardware fault

UPS menu and data window

UPS menu window displays the menu name of data window, while the data window displays the related contents of selected menu in menu window.
Select UPS menu and data window to browse related parameters of UPS and set related functions. The details are given in table.7-7.

Table.7- 7: Item Description of UPS Menu

Menu name Menu item Meaning

Main input

V phase(V) Phase voltage

I phase(A) Phase current

Freq.(Hz) Input frequency

PF Power factor

Bypass input

V phase(V) Phase voltage

Freq. (Hz) Bypass frequency

I phase(A) Phase current

PF Power factor

AC output

V phase(V) Phase voltage

I phase(A) Phase current

Freq. (Hz) Output frequency

PF Power factor

UPS system load

Sout (kVA) Sout: Apparent Power

Pout (kW) Pout: Active Power

Qout (kVAR) Qout: Reactive Power

Load (％)

Load (The percentage of the UPS rating load)

Battery data

Environmental Temp Environmental Temp

Battery voltage(V) Battery bus voltage

Battery current A) Battery bus current

Battery Temp(℃) Battery Temp ℃

Remaining Time (Min.) Remaining battery backup time

Battery capacity (％)

The percentage compared with new battery capacity

battery equalized

charging

Battery is equalized charging

battery float charging Battery is float charging

Battery disconnected Battery is not connected

Current record (current alarm) Display all current alarm. The alarm list displayed on LCD of UPS operator control and

Chapter 7 Operator Control and Display Panel

Modular UPS SM series User Manual 44

Menu name Menu item Meaning

display panel please refer to table 4

-8

History record (history alarm)

Display all history alarm. The alarm list displayed on LCD of UPS operator control and
display panel please refer to table 4-9

Menu Language (language option) 4 languages can be selected

Settings

Display calibration Adjust the accuracy of LCD display

Date format set MONTH-DATE-YEAR and YEAR-MONTH-DATE formats can be selected

Date & Time Date/Time set

Language set User can set the language (Chinese, English and a kind of optional language)

Communication mode

Set communication

mode, MODBUS, Power protocol and company custom protocol

modes can be selected. Power protocol mode can be divided into equipment address,

baud rate set; MODBUS protocol mode can be divided into communication, mode (RTU

、

ASCⅡ), equipment address, baud rate and check-bit set; Company custom protocol

mode is the customer protocol of the company, no option is available.

Control password set User can modify control password 1

Test Command
(Battery Test Control /
System Test Control /
Forced equalized
charging)

Battery maintenance
test

This test will lead to the battery being partly discharged to activate battery, at the same

time; the approximate battery capacity will be obtained. Bypass must be in normal
condition, the battery capacity should be above 25%.

Battery self-check test

UPS switches to battery discharge for discharging to test if the battery is normal. Bypass
must be in normal condition, the battery capacity should be above 25%.

Stop testing Manually Stop the test including maintenance test, capacity test

UPS system

information

Monitoring software

version

Provide monitoring software version

Rectified software

version

Provide rectified software version

Inverted software
version

Provide inverted software version

Serial No. The serial no set when delivery from the factory

Rated information Network setting of system operating

Module type Type of the module

7.4 UPS Event Log

The follow table.7-8 gives the complete list of all the UPS events displayed by history record window and current record window.

Table.7- 8: UPS Event List

NO. UPS events Meaning

1 Fault Clear Manually clear fault

2 Log Clear Manually clear History log

3 Load on UPS Inverter powers load

4 Load on Bypass Bypass powers load

5 No Load There is no output power for load.

6 Battery Boost Charger is working in boost charge mode

7 Battery Float Charger is working in float charge mode

8 Battery Discharge Battery is discharging

9 Battery Connected Battery is connected already

10 Battery Not Connected Battery is disconnected.

11 Maintenance CB Closed Manual maintenance breaker is closed

12 Maintenance CB Open Manual maintenance breaker is opened

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Modular UPS SM series User Manual 45

13 EPO Emergency Power Off

14 Inverter on Less

Available power module

capacity is less th

a

n the load capacity

. Please reduce the load capacity or

add extra power module to make sure that the UPS capacity is big enough.

15 Generator Input Generator is connected and a signal is sent to the UPS.

16 Utility Abnormal

Utility (Grid) is abnormal. Mains voltage or frequency exceeds the upper or lower limit and results
in rectifier shutdown. Check the input phase voltage of rectifier.

17 Bypass Sequence Error Bypass voltage Sequence is reverse. Check if input power cables are connected correctly.

18 Bypass Voltage Abnormal

This alarm is triggered by an inverter software routine when the amplitude or frequency of bypass

voltage exceeds the limit. The alarm will automatically reset if the bypass voltage becomes normal.
First check if relevant alarm exists, such as “bypass circuit breaker open”, “Byp Sequence Err” and
“Ip Neutral Lost”. If there is any relevant alarm, first clear this alarm.

1. Then check and confirm if the bypass voltage and frequency displayed on the LCD are within
the setting range. Note that the rated voltage and frequency are respectively specified by “Output
Voltage” and “Output Frequency”.

2. If the displayed voltage is abnormal, measure the actual bypass voltage and frequency. If the
measurement is abnormal, check the external bypass power supply. If the alarm occurs frequently,
use the configuration software to increase the bypass high limit set point according to the user’s
suggestions

19 Bypass Module Fail Bypass Module Fails. This fault is locked until power off. Or bypass fans fail.

20 Bypass Over Load

Bypass current is over the limitation. If bypass current is under 135% of the rated current. The
UPS alarms but has no action.

21 Bypass Over Load Tout The bypass overload status continues and the overload times out.

22 Bypass Freq. Over Track

This alarm is triggered by an inverter software routine when the frequency of bypass voltage

exceeds the limit. The alarm will automatically reset if the bypass voltage becomes normal.
First check if relevant alarm exists, such as “bypass circuit breaker open”, “Bypass Sequence
Error” and “IP Neutral Lost”. If there is any relevant alarm, first clear this alarm.

1. Then check and confirm if the bypass frequency displayed on the LCD are within the setting
range. Note that the rated frequency is respectively specified by “Output Frequency”.

2. If the displayed voltage is abnormal, measure the actual bypass frequency. If the measurement
is abnormal, check the external bypass power supply. If the alarm occurs frequently, use the
configuration software to increase the bypass high limit set point according to the user’s
suggestions

23 Exceed Tx Times Limit

The load is on bypass because the output overload transfer and re-transfer is fixed to the set times
during the current hour. The system can recover automatically and will transfer back to the inverter
with 1 hour

24 Output Shorted

Output shorted Circuit.
Fist check and confirm if loads have something wrong.
Then check and confirm if there is something wrong with terminals, sockets or some other power
distribution unit.
If the fault is solved, press “Fault Clear” to restart UPS.

25 Battery EOD

Inverter turned off due to low battery voltage. C

heck the mains power failure status and recover

the mains power in time

26

Battery Test OK Battery Test OK

27

Batt

ery Maint

enance OK Battery maintenance succeed

28

N# Comm Node Join

The N# Power Module is i

nserted in system

.

29

N# Comm Node Exit

The

N# Power Module is pull

ed out from system

.

30

N# REC Fail The N# Power Module Rectifier Fail, The rectifier has faulted and results in rectifier shutdown and

battery discharging.

31

N# INV Fail

The

N# Power Module Inverter Fail

. The inverter output

voltage is abnormal and the load transfers

to bypass.

32

N# REC OV Temp.

The

N# Power Module Rectifier Over Temperature

. The temperature of the rectifier IGBTs is too

high to keep rectifier running. This alarm is triggered by the signal from the temperature monitoring
device mounted in the rectifier IGBTs. The UPS recovers automatically after the over temperature

Chapter 7 Operator Control and Display Panel

Modular UPS SM series User Manual 46

signal disappears.

If over temperature exists, check:

1. Whether the ambient temperature is too high.

2. Whether the ventilation channel is blocked.

3. Whether fan fault happens.

4. Whether the input voltage is too low.

33

N# Fan Fail

At least one fan fails in the N# power module.

34

N# Output Over Load The N# Power Module Output Over Load. This alarm appears when the load rises above 100% of

nominal rating. The alarm automatically resets once the overload condition is removed.

1. Check which phase has overload through the load (%) displayed in LCD so as to confirm if this
alarm is true.

2. If this alarm is true, measure the actual output current to confirm if the displayed value is correct.
Disconnect non-critical load. In parallel system, this alarm will be triggered if the load is severely
imbalanced.

35

N# INV Over Load Tout N# Power Module Inverter Over Load Timeout. The UPS overload status continues and the

overload times out.
Note:
The highest loaded phase will indicate overload timing-out first.
When the timer is active, then the alarm “unit over load” should also be active as the load is above
nominal.
When the time has expired, the inverter Switch is opened and the load transferred to bypass.
If the load decreases to lower than 95%, after 2 minutes, the system will transfer back to inverter
mode. Check the load (%) displayed in LCD so as to confirm if this alarm is true. If LCD displays
that overload happens, then check the actual load and confirm if the UPS has over load before
alarm happens.

36

N# INV Ov

er Temp. The

N# Power Module Inverter Over Temperature

.

The temperature of the inverter heat sink is too high to keep inverter running. This alarm is
triggered by the signal from the temperature monitoring device mounted in the inverter IGBTs. The
UPS recovers automatically after the over temperature signal disappears.
If over temperature exists, check:
Whether the ambient temperature is too high.
Whether the ventilation channel is blocked.
Whether fan fault happens.
Whether inverter overload time is out.

37 On UPS Inhibited

Inhibit system transfer from bypass to UPS (inverter)

. Check:

Whether the power module’s capacity is big enough for load.
Whether the rectifier is ready.
Whether the bypass voltage is normal.

38 Manual Transfer Bypass Transfer to bypass manually

39 Esc Manual Bypass

Escape from “transfer to bypass manually” command. If UPS has been transferred to bypass
manually, this command enable UPS to transfer to inverter.

40 Battery Volt Low

Battery Voltage is Low. Before the end of discharging, battery voltage is low warning should occur.
After this pre-warning, battery should have the capacity for 3 minutes discharging with full load.

41 Battery Reverse Battery cables are connected not correctly.

42 N# INV Protect

The

N# Power Module Inverter Protect

. Check:

Whether inverter voltage is abnormal
Whether inverter voltage is much different from other modules, if yes, please adjust inverter
voltage of the power module separately.

43 IP Neutral Lost

The mains neutral wire is lost or not detected. For 3 phases UPS, it’s recommended that user use
a 3-poles breaker or switch between input power and UPS.

44 Bypass Fan Fail At least one of bypass module Fans Fails

45 N# Manual Shutdown

The

N# Power Module

is manually s

hutdown

. The power module shuts down rectifier and inverter,

and there’s on inverter output.

46 ManBoost Manually force the Charger work in boost charge mode.

Chapter 7 Operator Control and Display Panel

Modular UPS SM series User Manual 47

47 ManFloat Manually force the charger work in float charge mode.

48 Arrears Shutdown Reserved.

49 Lost N+X Redundant Lost N+X Redundant. There is no X redundant powers module in system.

50 EOD Sys Inhibited System is inhibited to supply after the battery is EOD (end of discharging)

Chapter 8 Optional Parts

Modular UPS SM series User Manual 48

Chapter 8 Optional Parts

8.1 Replacing Dust Filters

Each filter is held in place by a bracket on either side of each filter. To replace each filter:

1. Open the UPS front door and locate the filters on the back side of the front door (see Fig. 8-1).

2. Remove one bracket and loosen the screw on the second bracket. The second bracket need not be removed

3. Remove the dust filter to be replaced.

4. Insert the clean filter.

5. Reinstall the bracket, tightening the screw securely.

6. Tighten the screw on the second bracket.

Fig.8- 1: Dust Filter

Chapter 9 Product Specification

Modular UPS SM series User Manual 49

Chapter 9 Product Specification

This chapter provides UPS product specification.

9.1 Applicable Standards

The UPS has been designed to conform to the following European and international standards:

Table.9- 1: Compliance with European and International Standards

Item Normative reference

General safety requirements for UPS used in
operator access areas

EN50091-1-1/IEC62040-1-1/AS 62040-1-1

Electromagnetic compatibility (EMC) requirements for

UPS

EN50091-2/IEC62040-2/AS 62040-2 (C3)

Method of specifying the performance and test

requirements of UPS

EN50091-3/IEC62040-3/AS 62040-3 (VFI SS 111)

Note: The above mentioned product standards incorporate relevant compliance clauses with generic IEC and EN standards for safety

(IEC/EN/AS60950), electromagnetic emission and immunity (IEC/EN/ AS61000 series) and construction (IEC/EN/AS60146 series and

60950).

9.2 Environmental Characteristics

Table.9- 2: Environmental Properties

Items Unit Requirements

Acoustic noise level at 1 meter dB 55.0

Altitude of Operation m

≤1000m above sea level, de

-

rat

ing power by 1% per 100m between 1000m and

2000m

Relative Humidity %RH 0 to 95%, non-condensing

Operating Temperature °C 0 to 40 degree, Battery life is halved for every 10°C increase above 20°C

UPS Storage-Transport Temperature °C -20~70

Recommended

Battery Storage

Temperature

°C -20~25 (20°C for optimum battery storage)

9.3 Mechanical Characteristics

Table.9- 3: Mechanical Properties

Cabinet Specification Unit SM60/20 SM120/20 200/20

Mechanical Dimension, W×D×H mm 600×900×1100 600×900×1600 600×900×2000

Weight kg 120 151 182

Color N/A Black

Protection Level, IEC(60529) N/A IP20

Module type Unit PM20

Mechanical Dimension, W×D×H mm 440×590×134

Weight kg 22.5

Color N/A Black(front), no color (other sides)

Chapter 9 Product Specification

Modular UPS SM series User Manual 50

9.4 Electrical Characteristics (Input Rectifier)

Table.9- 4: Rectifier AC Input (mains)

Items Unit Parameter

Rated AC Input Voltage Vac 380/400/415 (three-phase and sharing neutral with the bypass input)

Input voltage range Vac -40%~+25%

Frequency

1

Hz

50/60 (range: 40Hz～70Hz)

Power factor kW/kVA, full load 0.99

THD THDI% 3

9.5 Electrical Characteristics (Intermediate DC Link)

Table.9- 5: Battery Information

Items Unit Parameters

Battery bus voltage Vdc Nominal: ±240V, one-side range: 198V~288V

Quantity of lead

-

acid

cells

Nominal 480V=40*6cell (12V)

Float charge voltage V/cell(VRLA)

2.25V/cell (selectable from 2.2V/cell~2.35V/cell)
Constant current and constant voltage charge mode

Temperature

compensation

mV/°C /cl -3.0(selectable from : 0~-5.0, 25°C or 30°C, or inhibit)

Ripple voltage %V float ≤1

Ripple current %C10 ≤5

Equalized charge
voltage

VRLA

2.4V/cell(selectable from : 2.30V/cell～2.45V/cell)

Constant current and constant voltage charge mode

Final discharging
voltage

V/cell(VRLA)

1.65V/cell (selectable from : 1.60V/cell～1.750V/cell) @0.6C discharge current

1.75V/cell (selectable from : 1.65V/cell～1.8V/cell) @0.15C discharge current

(EOD voltage changes linearly within the set range according to discharge current)

Battery Charge V/cell

2.4V/cell (selectable from : 2.3V/cell~2.45V/cell)
Constant current and constant voltage charge mode

Battery Charging
Power Max Current

kW 10%* UPS capacity (selectable from : 0~20%* UPS capacity)

9.6 Electrical Characteristics (Inverter Output)

Table.9- 6: Inverter Output (to Critical Load)

Rated capacity (kVA) Unit 20~200

Rated AC voltage

1

Vac 380/400/415 (three-phase four-wire and sharing neutral with the bypass)

Freqency

2

Hz 50/60

overload %

110% load, 1 hour
125% load, 10min
150% load, 1min
>150% load, 200ms

Fault current % 340% short current limitation for 200ms

Non-linear load

Capability

3

% 100%

Neutral current capability % 170%

Chapter 9 Product Specification

Modular UPS SM series User Manual 51

Rated capacity (kVA) Unit 20~200

Steady state voltage stability %

±1 (balanced load)

±1.5 (100% imbalance load)

Transient voltage response2 % ±5

THD %

<1.5 (linear load) , <5 (non-linear load3)

Synchronization Window - Rated frequency ±2Hz (selectable: ±1~±5Hz)

Max change rate of synch

frequency

Hz/s 1: selectable: 0.1~5

Inverter voltage range %V(ac) ±5

Note:

1. Factory setting is 380V. Commissioning engineers can set to 400V or 415V.

2. Factory setting is 50Hz. Commissioning engineers can set to 60Hz.

3. EN50091-3(1.4.58) crest ratio is 3: 1.

4. IEC62040-3/EN50091-3 including 0%~100%~0% load transient, the recovery time is half circle to within 5% of stable output voltage.

9.7 Electrical Characteristics (Bypass Input)

Table.9- 7: Bypass Input

Rated capacity(kVA) Unit

40 60 80 100 120 140 160 200

Rated AC Voltage Vac

380/400/415

three-phase four-wire, sharing neutral with the rectifier input and providing neutral reference for the output

Rated current A

60

@380V

91

@380V

121

@380V

152

@380V

182

@380V

212

@380V

242

@380V

303

@380V

58

@400V

87

@400V

116

@400V

145

@400V

174

@400V

203

@400V

232

@400V

290

@400V

56

@415V

83

@415V

111

@415V

139

@415V

167

@415V

194

@415V

222

@415V

278

@415V

Overload %

125% load, long term

130% load, 1 hour

150% load, 6min

1000% load, 100ms

Superior protection
bypass line N/A Thermal-magnetic breaker, the capacity is 125% of rated current output. IEC60947-2 curve C

Current rating of

neutral cable A 1.7×In

Frequency Hz 50/60

Switch time

(between bypass
and inverter) ms Synchronized switch: ≤1ms

Bypass voltage
tolerance

%
Vac

Upper limit: +10,+15 or +20, default: +20

Lower limit: -10, -20, -30 or -40, default:-20

(acceptable stable bypass voltage delay: 10s)

Bypass frequency

tolerance % ±2.5, ±5, ±10 or ±20, default: ±10

Synchronization

-

Wi

ndow Hz

Rated frequency±2Hz (selectable from ±0.5Hz～±5Hz)

Chapter 9 Product Specification

Modular UPS SM series User Manual 52

Note:

1. Factory setting is 400V. Commissioning engineers can set to 380V or 415V.

2. Commissioning engineers can set to 50Hz or 60Hz. For example, UPS is set to frequency inverter mode, and then bypass status will

be neglected.

9.8 Efficiency

Table.9- 8: Efficiency, Air Exchange

Rated Efficiency (kVA) Unit

20～200kVA

Efficiency

Normal mode(dual conversion) % 95

ECO mode

% 98

Battery discharging efficiency (DC/AC) (battery at nominal voltage 480Vdc and full

-

rated linear

load)

Battery mode % 95

Maximum air exchange

m3 /min 6.04/power module, 4.53/bypass module