Staco Energy E2 User manual

003-2696 Rev A
Staco E2
208V 60Hz
25 to 100kVA
USER MANUAL

Page | 2
No reproduction of any part of this manual, even partial, is permitted without the authorization of
Staco Energy Products Company. The Staco Energy Products Company reserves the right to
modify the product described herein, in order to improve it, at any time and without notice.
2425 Technical Drive • Miamisburg, Ohio 45342
U.S. Toll Free 866-261-1191
[phone] • Fax: [phone]
Web site: www.stacoenergy.com
Thank you for choosing our product.
Staco Energy is highly specialized in the development and production of uninterruptible power
systems (UPS). The UPS’s of this series are high quality products, carefully designed and
manufactured to ensure optimum performance.

Page | 3
Table of Contents
Important Safety Instructions: ............................................................................................................. 6
1.0 Main Features ............................................................................................................................... 9
1.1 Summarization........................................................................................................................... 9
1.2 Functions and Features............................................................................................................. 9
1.3 System Configuration .............................................................................................................. 10
1.4 Standard Compliance .............................................................................................................. 10
2.0 Installation ................................................................................................................................... 11
2.1 Check Before Unpacking......................................................................................................... 13
2.2 Cabinet Layout......................................................................................................................... 15
2.2.1 Component Identification.................................................................................................. 18
2.3 LCD Control Panel................................................................................................................... 18
2.4 Installation notes...................................................................................................................... 19
2.5 External Protective Devices .................................................................................................... 20
2.6 Power Cables .......................................................................................................................... 20
2.6.1 Recommended cross-sectional areas for power cables.................................................. 21
2.6.2 Power cable connector requirements............................................................................... 22
2.6.3 Recommended input front-end and output back-end circuit breakers ............................ 22
2.7 Customer Connection.............................................................................................................. 23
2.7.1.1 Common Terminal Identification.................................................................................... 23
2.7.1 Common Input Connections............................................................................................. 24
2.7.2 Split Input Connection ...................................................................................................... 26
2.7.2.1 Split Terminal Identification ........................................................................................... 28
2.8 External Battery Pack Connection .......................................................................................... 29
2.8.1 External Battery Cabinet Installation ................................................................................ 30
2.8.2 External Battery Cabinet Installation and Connection ..................................................... 30
2.8.3 Verify Battery Wiring......................................................................................................... 32
2.9 External Battery Cabinet Connections for Long-Run Units .................................................... 32
2.9.1 External battery connections for long-run units................................................................ 32
2.9.2 Multiple Battery Pack Connections................................................................................... 33
2.8 Battery setting:......................................................................................................................... 33
2.10 Installation and Setup............................................................................................................ 35
2.10.1 Unpacking & Inspection.................................................................................................. 35
2.10.2 Selecting Installation Position......................................................................................... 35
2.11 UPS Parallel Installation........................................................................................................ 35
2.11.1 Cabinet installation ......................................................................................................... 36
2.11.2 Parallel Cable Installation............................................................................................... 37
2.11.3 Parallel System Requirements....................................................................................... 37
2.11.4 Wiring Diagram for Parallel Installation.......................................................................... 38
2.12 Parallel setting: ...................................................................................................................... 40
2.13 Load Bus Installation (LBS)................................................................................................... 41
2.13.1 LCD setting ..................................................................................................................... 41
2.13.2 LBS cable installation ..................................................................................................... 42
2.12.3 UPS installation .............................................................................................................. 42
2.12.4 LBS setting:..................................................................................................................... 42
2.13 Computer access................................................................................................................... 43
3.0 Operation..................................................................................................................................... 46
3.1 Operation Modes ..................................................................................................................... 46
3.1.2 Turn On/Off UPS .............................................................................................................. 48
3.1.3 Test Procedure ................................................................................................................. 48

Page | 4
3.2 Maintenance Bypass ............................................................................................................... 49
3.2.1 Switch to Mechanical Bypass........................................................................................... 49
3.2.2 Switch to Normal Operation (from mechanical bypass)................................................... 49
3.3 Cold Start Procedure ............................................................................................................... 50
3.4 Shut Down Procedure ............................................................................................................. 51
3.4.1 On-Line Mode ................................................................................................................... 51
3.4.2 Battery Mode..................................................................................................................... 51
3.5 Parallel setting ......................................................................................................................... 51
3.6 The LCD Display...................................................................................................................... 54
3.6.1 Home page ....................................................................................................................... 54
3.6.2 System Status................................................................................................................... 55
3.6.3 Status................................................................................................................................ 56
3.6.4 UPS Status Screens......................................................................................................... 56
3.6.5 Information Screens.......................................................................................................... 58
3.6.6 Settings Screen ................................................................................................................ 60
3.7 Display Messages/Troubleshooting ........................................................................................ 74
3.7.1 Display Messages............................................................................................................. 74
3.7.2 Fault Information............................................................................................................... 75
3.7.3 Alarm Information ............................................................................................................. 76
3.8 Options..................................................................................................................................... 76
3.8.1 Internal SNMP / external SNMP optional......................................................................... 77
3.8.2 Relay card......................................................................................................................... 77
Appendix 1 - Specifications............................................................................................................... 78
Appendix 2 - Troubleshooting ........................................................................................................... 79
Appendix 3 – USB Communication Port Definition .......................................................................... 80
Appendix 4 – RS232 Communication Port Definition....................................................................... 81
Appendix 5 – RS485 Communication Port Definition....................................................................... 82
Appendix 6 – BAT_T Communication Port Definition....................................................................... 83
Appendix 7 – Optional port definition................................................................................................ 83
Appendix 8 – REPO instruction ........................................................................................................ 84
Appendix 9 – Backfeed Protection function...................................................................................... 85

Page | 5
Table of Figures
Figure 1 - 25K & 30K Cabinet Dimensions....................................................................................... 11
Figure 2 - 40K Cabinet Dimensions.................................................................................................. 11
Figure 3 - 50K & 60K Cabinet Dimensions....................................................................................... 11
Figure 4 - 80K & 100K Cabinet Dimensions..................................................................................... 12
Figure 5 - 25K & 30K Model Cabinet View....................................................................................... 15
Figure 6 - 40K Model Cabinet View .................................................................................................. 16
Figure 7 -50K & 60K Model Cabinet View ........................................................................................ 16
Figure 8 - 80K & 100K Model Cabinet View ..................................................................................... 17
Figure 9 - 25/30K Common Input Connections ................................................................................ 24
Figure 10 - 40K Common Input Connections ................................................................................... 24
Figure 11 – 50/60K Common Input Connections ............................................................................. 25
Figure 12 - 80/100K Common Input Connections ............................................................................ 25
Figure 13 - 20/30K Split Input Connections...................................................................................... 26
Figure 14 - 40K Split Input Connections........................................................................................... 26
Figure 15 – 50/60K Spilt Input Connections ..................................................................................... 27
Figure 16 – 80/100K Spilt Input Connections ................................................................................... 27
Figure 17 - 38/45 AH Battery Cabinet External View ....................................................................... 29
Figure 18 - 100AH Battery Cabinet External View ........................................................................... 29
Figure 19 – Battery Wiring Connection for 25/30kVA....................................................................... 30
Figure 20 - Wiring Connection for 50/60kVA .................................................................................... 31
Figure 21 – Battery Wiring Connection for 80/100kVA..................................................................... 31
Figure 23 - Parallel Cabel Installation............................................................................................... 37
Figure 24- 20/30K Parallel Wiring Diagram ...................................................................................... 38
Figure 25 – 40K Parallel Wiring Diagram ......................................................................................... 39
Figure 26 – 50/60K Parallel Wiring Diagram .................................................................................... 39
Figure 27 – 80/100K Parallel Wiring Diagram .................................................................................. 40
Figure 28 - Home Screen.................................................................................................................. 54
Figure 29 - Typical topology of the UPS Network Management...................................................... 77

Page | 6
Important Safety Instructions:
SAVE THESE INSTRUCTIONS - This manual contains important instructions for Staco E2 that
should be followed during installation and maintenance of the UPS and batteries.
CAUTION! - To reduce the risk of fire, connect only to branch circuit over current protection with
maximum amperage listed below in accordance with the National Electric Code, ANSI/NFPA 70
External DC Circuit Over Current Protective Device
25kVA – 160 Amperes
30kVA – 200 Amperes
40kVA – 225 Amperes
50kVA – 250 Amperes
60kVA – 320 Amperes
80kVA – 400 Amperes
100kVA – 600 Amperes
CAUTION! (UPS with internal batteries): Risk of electrical shock – Hazardous live parts inside
this unit are energized from the battery supply even when the input AC power is disconnected.
CAUTION! (No User serviceable Parts): Risk of electrical shock, do not remove cover. No user
serviceable parts inside. Refer service to qualified service personnel.
CAUTION! (Non-isolated Battery supply): Risk of electric shock, battery circuit is not isolated
from AC input, hazardous voltage may exist between battery terminals and ground. Test before
touching.
WARNING! (Fuses): To reduce the risk of fire, replace only with the same type and size of fuse.
WARNING! Unit intended for installation in a controlled environment.
CAUTION! Do not dispose of batteries in a fire, the battery may explode.
CAUTION! Do not open or mutilate the battery, released electrolyte is harmful to the skin and
eyes.
CAUTION! A battery can present a risk of electric shock and high short circuit current. The
following precaution should be observed when working on batteries:
Remove watches, rings, or other metal objects.
Use tools with insulated handles.
To reduce the risk of electric shock, disconnect the UPS from the main supply before installing a
communication signal cable. Reconnect the power only after signaling interconnections have been
made.
Servicing of batteries should be performed or supervised by personnel with knowledge of batteries
and the required precautions. Keep unauthorized personnel away from batteries

Page | 7
For Replacement of batteries located in a SERVICE ACCESS AREA -
1. Servicing of batteries should be performed or supervised by personnel knowledgeable
about batteries and the required precautions.
2. Risk of explosion if battery is replaced by an incorrect type. When replacing batteries,
replace with the same type and number of batteries or battery packs.
3. CAUTION: Do not dispose of batteries in a fire. The batteries may explode. Dispose of
used batteries according to the instructions.
4. CAUTION – Do not open or mutilate batteries. Released electrolyte is harmful to the skin
and eyes. It may be toxic.
5. CAUTION – A battery can present a risk of electrical shock and high short circuit current.
The following precautions should be observed when working on batteries:
a. Remove watches, rings, or other metal objects.
b. Use tools with insulated handles.
c. Wear rubber gloves and boots.
d. Do not lay tools or metal parts on top of batteries.
e. Disconnect charging source prior to connecting or disconnecting battery terminals.
f. Determine if battery is inadvertently grounded. If inadvertently grounded, remove
source from ground. Contact with any part of a grounded battery can result in
electrical shock. The likelihood of such shock can be reduced if such grounds are
removed during installation and maintenance.
UPS units are extremely heavy. Caution should be taken in moving and positioning equipment.
The instructions contained within this safety manual are deemed important and should be closely
followed at all times during installation and follow-up maintenance of the UPS and batteries.
CAUTION
The unit has a dangerous amount of voltage. If the UPS indicator is on, the unit’s outlets may have
voltage present even when not connected because the battery may continue to supply power.
Care should be taken to undertake installation indoors, free from electrically conductive particles
which are under temperature and humidity control, in order to reduce the risk of electric shock.
Except for replacing the batteries, all servicing on this equipment must be carried out by qualified
service personnel.
Before conducting any maintenance, repair, or shipment, first ensure that everything is turned off
completely and disconnected.

Page | 8
For additional safety instructions, please use the User Manual as a reference.
Special Symbols
The following symbols used on the UPS to warn of precautions:
RISK OF ELECTRIC SHOCK - Please observe the warning that a risk of electric shock is
present
CAUTION: REFER TO OPERATOR’S MANUAL - Refer to the operator’s manual for
additional information, such as important operating and maintenance instructions.

Page | 9
1.0 Main Features
1.1 Summarization
This series UPS is a 3-Phase in, 3-Phase out double conversion online UPS.
The UPS can solve most power supply problems, such as blackout, over-voltage, under-voltage,
voltage sudden drop, oscillating of decreasing extent, high voltage pulse, voltage fluctuation,
surge, inrush current, harmonic distortion (THD), noise interference, frequency fluctuation, etc.
This UPS can be applied to different applications from computer device, automatic equipment,
communication system to industry equipment.
1.2 Functions and Features
Integrated solution for data center
UPS can be integrated with battery cabinet, PDU external maintenance bypass, offering
excellent choice for data center.
3-Phase In/3-Phase Out UPS
3-Phase In/3-Phase Out high-density UPS system, where input current is kept in balance.
No unbalance problem might occur.
Digital Control
This series UPS is controlled by Digital Signal Processor (DSP); it increases reliability,
performance, self-protection, and self-diagnostics etc.
Battery Configurable
The battery voltage of this series UPS can be configured to 18, 20, 22, 24, or 26
batteries.
Charging Current is configurable
Via setting tool, the user may set the capacity of the batteries, charging current, and
maximum charging current. Constant voltage mode, constant current mode or floating
mode can be switched automatically and smoothly.
Intelligent Charging Method
The series UPS adopts advanced three-stage charging method —
1st stage: high current constant current charging to guarantee to charge back to 90%;
2nd-stage: Constant Voltage - In order to vitalize battery and make sure batteries are fully
charged;
3rd stage: floating mode. With this 3-stage charging method, it extends the life of the
batteries and guarantees fast charging.
LCD Display
With LCD plus LED displays, the user may easily obtain UPS status and operational
parameters, such as input/output voltage, frequency & load%, battery %, and ambient
temperature, etc.
Intelligent Monitoring Function
Via optional SNMP Card, you may remotely control and monitor the UPS.
EPO Function
The series UPS may be completely shut off when the EPO is pressed. REPO function
(Remote EPO) is also available in this series UPS.

Page | 10
1.3 System Configuration
This system is comprised of the UPS device and the external batteries. Additional options are
available depending on the site and load requirements of the installation.
The following should be taken into consideration for planning the UPS system:
The total demand of the protected system shall dictate the output power rating (VA). Allow
a margin for future expansion or calculation inaccuracies from measured power
requirements.
Backup time required will indicate the battery size needed. If the load is less than the UPS
nominal power rating, then actual backup time may be longer
The following options are available:
•Connectivity Options –SNMP/WEB/Relay card
•Extended Battery Packs -Matching battery pack configuration and maximum
quantity
See the Specification section of this manual for additional model information.
1.4 Standard Compliance
This product has been designed to the following safety standards and electromagnetic
compatibility (EMC) inspection standards:
UL 1778
CSA C22.2 No. 107.3
FCC Part 15 Class A
ENERGY STAR 2.0

Page | 11
2.0 Installation
Dimension (mm)
Figure 1 - 25K & 30K Cabinet Dimensions
Dimension (mm)
Figure 2 - 40K Cabinet Dimensions
Dimension (mm)
Figure 3 - 50K & 60K Cabinet Dimensions

Page | 12
Dimension (mm)
Figure 4 - 80K & 100K Cabinet Dimensions
Leave minimum 500mm space around the cabinet for operation and ventilation

Page | 13
2.1 Check Before Unpacking
1) Don’t tilt the UPS when moving it from the packaging.
2) Visually inspect the UPS appearance for shipping damage. If it is damaged, notify the
carrier immediately. If the UPS has been damaged during transportation, do not switch on
the UPS if any damage found. Please contact the manufacturer right away.
3) Check the accessories according to the packing list and contact the manufacturer in case
of missing parts
4) Remove the cabinet’s inner packaging
5) Check that the UPS is intact.
6) Unfasten the screws and remove the wooden bar or sheet metal affixed to the cabinet.

Page | 14
7) Slowly slide the unit from the pallet

Page | 15
2.2 Cabinet Layout
Figure 5 - 25K & 30K Model Cabinet View

Page | 16
Figure 6 - 40K Model Cabinet View
Figure 7 -50K & 60K Model Cabinet View

Page | 17
Figure 8 - 80K & 100K Model Cabinet View

Page | 18
2.2.1 Component Identification
(1) LCD panel
(2) Battery temperature sensor (NTC)
(3) RS485 port (for RS485 temperature sensor)
(4) USB port
(5) RS232 port RS485 port (for RS485 temperature sensor)
(6) BAT_SW: detect battery switch status
(7) Optional port
(Port for backfeed protection, or for battery breaker driver
to prevent battery over-drain after UPS shuts down)
(8) MAINTAIN-AUXSWS port
(9) REPO port
(10) Parallel port
(11) LBS port
(12) Cold-start button
(13) Intelligent Slot 1 (SNMP card/ Relay card)
(14) Intelligent Slot 2 (SNMP card)
(15) Mains breaker
(16) Bypass breaker
(17) Maintenance breaker
(18) Output breaker
(19) Terminal Block
2.3 LCD Control Panel
LCD Control Panel Introduction
1.) LED (from top to bottom: Alarm, Bypass, Battery, Inverter)
2.) LCD display
3.) EPO key

Page | 19
2.4 Installation notes
Please place the UPS in a clean, stable environment, avoid the vibration, dust, humidity,
flammable gas and liquid, corrosive. To avoid from high room temperature, a system of
room extractor fans is recommended to be installed. Optional air filters are available if the
UPS operates in a dusty environment.
The environment temperature around UPS should keep in a range of 0℃～40℃. If the
environment temperature exceeds 40℃, the rated load capacity should be reduced by 12％
per 5℃. The max temperature can't be higher than 50℃.
If the UPS is dismantled under low temperature, it might be in a condensing condition. The
UPS can't be installed unless the internal and external of the equipment is fully dry.
Otherwise, there will be in danger of electric shock.
Batteries should be mounted in an environment where the temperature is within the
required specs. Temperature is a major factor in determining battery life and capacity. In a
normal installation, the battery temperature is maintained between 15°C and 25°C. Keep
batteries away from heat sources or main air ventilation area, etc.
WARNING!
Typical battery performance data are quoted for an operating temperature
between 20°C and 25°C. Operating it above this range will reduce the battery life
while operation below this range will reduce the battery capacity.
Should the equipment not be installed immediately it must be stored in a room to protect it
against excessive humidity and or heat sources.
CAUTION!
An unused battery must be recharged every 6months. Temporarily connecting
the UPS to a suitable AC supply mains and activating it for the time required for
recharging the batteries.
The highest altitude that UPS may work normally with full load is 1500 meters. The load
capacity should be reduced when this UPS is installed in place whose altitude is higher
than 1500 meters, shown as the following table:
Load coefficient equals max load in high altitude place divided by nominal power of the UPS)
Altitude(m) 1500 2000 2500 3000 3500 4000 4500 5000
Load coefficient 100% 95% 90% 85% 80% 75% 70% 65%
Keep UPS in well ventilated area; the UPS cooling is dependent on fans. There are many
ventilation holes on the front and rear, so they should not be blocked by any obstacle.

Page | 20
2.5 External Protective Devices
For safety reasons, it is necessary to install an external circuit breaker at the input AC utility and to
the battery.
External Battery
The UPS and its associated batteries are protected against the effect of over-current through a DC
compatible thermo-magnetic circuit breaker located close to the battery.
UPS Output
Any external distribution board used for load distribution shall be fitted with protective devices to
avoid the risk of UPS overload.
Over-Current Protection
A protection device shall be installed at the distribution panel of the incoming utility power and
should identify the power cables current capacity as well as the overload capacity of the system.
CAUTION!
Select a thermo-magnetic circuit-breaker with an IEC 60947-2 trip curve C (normal) for
125% of the current.
2.6 Power Cables
The cable design shall comply with the voltages and currents provided in this section, and in
accordance with local electrical codes.
WARNING!
UPON STARTING, PLEASE ENSURE THAT YOU ARE AWARE OF THE LOCATION
AND OPERATION OF THE EXTERNAL
ISOLATORS WHICH ARE CONNECTED TO THE UPS INPUT/BYPASS SUPPLY OF
THE UTILITY DISTRIBUTION PANEL.
CHECK TO SEE IF THESE SUPPLIES ARE ELECTRICALLY ISOLATED, AND POST
ANY NECESSARY WARNING SIGNS TO PREVENT ANY INADVERTENT
OPERATION