Marathon Power Tri-Athlon ATWS-10003-02 User manual

Tri-Athlon
3-Phase Uninterruptible Power System
User Manual for Models:
ATWS-10003-02
ATWS-15003-02
ATWS-20003-02
ATWN-10003-02
ATWN-15003-02
ATWN-20003-02

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© 2020 Marathon Power Inc. All rights reserved.
The information in this document is subject to change without notice.

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Table of Contents
Section Page
1. Safety……………………………………………………………………………………4
1.1 Safety Notes …………………………………………………………………………4
1.2 Symbols……………………………………………………………………………….4
2. Main Features………………………………………………………………………….5
2.1 Summary……..…………………………………………………………………….…5
2.2 Functions and Features…………………………………………………………….5
3. Installation……………………………………………………………………………...6
3.1 Unpacking……..……………………………………………………………………..6
3.2 Cabinet Appearance………………………………………………………………...6
3.3 LCD Control Panel…………………………………………………………………...9
3.4 Installation Notes…………………………………………………………………….9
3.5 External Protective Devices……………………………………………………….10
3.6 Power Supply Cabling……………………………………………………………..10
3.7 Power Cable Connections….………………………………………………………12
3.8 Battery Connection………………………………………………………….……..15
3.9 UPS Parallel Installation…………………………………………………….……..16
3.10 Computer Access…………………………………………………………….…..17
4. Operation……………………………………………………………………………..19
4.1 Operation Modes…………………………………………………………………...19
4.2 Powering the UPS On / Off ……………………………………………………….21
4.3 LCD Display…………………………………………………………………………26
4.4 Communication Options………………………………………………………….33
Appendix 1 Specifications…………………………………………………………….35
Appendix 2 Troubleshooting………………………………………………………….36
Appendix 3 USB Communication Port………………………………………………37
Appendix 4 RS232 Communication Port……………………………………………38
Appendix 5 RS485 Communication Port……………………………………………39
Appendix 6 BAT_T Communication Port…………………………………………...40
Appendix 7 Optional Port……………………………………………………………...41
Appendix 8 REPO Instruction…………………………………………………………42
5. Warranty………………………………………………………………………………44

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1. Safety
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
Please read and save this manual!
The information provided in this manual refers to our Tri-Athlon UPS series. The manual covers
basic functions, operating and installation instructions, and cautionary notes. Installation must
be carried out in accordance with this manual as well as local electrical regulations and should
only be performed by qualified personnel to avoid the risk of electric shock or damage to the
unit. Any warranties covering these units will become void if the unit is found to have been
incorrectly connected or tampered with.
1.1 Safety Notes
1. Even without connection to utility power, AC voltage may still exist on the output.
2. Please ground the UPS properly before powering it on.
3. DO NOT open or tamper with the batteries as the fluid contained therein is harmful.
4. Please be careful to avoid short circuiting between the positive and negative of
battery as it will create a fire hazard!
5．DO NOT disassemble the UPS to avoid risk of electric shock!
6．Check for any high voltages prior to working on the batteries.
7．The operational environment and storage of the UPS will affect its life span and
reliability. Avoid the UPS from the following environments for long periods of time:
•Areas where the humidity and temperature is out of the specified range
•Direct sunlight or locations near heat sources
•Areas of high vibration
•Areas with corrosive chemicals, flammable gas, excessive dust, etc.
8．Keep the UPS in a well-ventilated area without obstructing the openings and fans
on the unit that could obstruct air flow for cooling
1.2 Symbols
WARNING! Risk of electric shock
CAUTION! Read this information to avoid equipment damage

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2. Main Features
2.1 Summary
The Tri-Athlon UPS series is a three-phase in; three-phase out, high frequency online UPS. The
UPS can mitigate most power quality problems, such as blackouts, over-voltages, under-
voltages, voltage sags, oscillations, high voltage pulses and surges, high inrush current,
harmonic distortion (THD), noise interference, frequency fluctuations, etc.
2.2 Functions and Features
◆3 Phase In / 3 Phase Out UPS
3 Phase In / 3 Phase Out high-power UPS system, with input current and voltage balancing.
◆Digital Control
The UPS is controlled by a Digital Signal Processor (DSP) which increases reliability,
optimizes performance, improves protection and offers advanced self-diagnostics.
◆Configurable Charging Current
Via a user adjustable setting, the user may set the capacity of the batteries as well as both
the normal charging current and maximum charging current. Constant voltage mode,
constant current mode or float mode can be switched automatically.
◆Intelligent Charging Method
The Tri-Athlon UPS series adopts an advanced three-stage charging method -
1st stage: High, constant current charging to ensure recharge to 90% within a reasonable
time;
2nd-stage: Constant Voltage, to energize the batteries and make sure they are fully
charged.
3rd stage: Floating mode, which extends the life of the batteries and guarantees fast
charging.
◆LCD Display
With both LCD and LED displays, the UPS status and its operational parameters, such as
input / output voltage, frequency & load%, battery %, ambient temperature, etc., are easily
accessible
◆Intelligent Monitoring Function
Using the optional SNMP Card, the user can remotely control and monitor the UPS.
◆EPO (Emergency Power Off) Function
The UPS can be completely shut off when the EPO circuitry is used.
◆REPO Function
A Remote EPO function is also available on the UPS.

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3. Installation
3.1 Unpacking
1. DO NOT lean or tilt the UPS when removing it from the packaging.
2. Check for damage that may have occurred during shipping.
DO NOT turn on the UPS if any damage is found. Immediately contact Marathon Power.
3. Check the accessories according to the packing list and contact Marathon Power in case of
missing parts.
3.2 Cabinet Appearance
Front View Side View

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10kVA Rear View (showing terminal block without cover)
(1) LCD panel (2) Intelligent Slot 1 (SNMP card/ Relay card)
(3) Intelligent slot 2 (SNMP card / Relay card) (4) Dry contact port
(5) Power switch (6) USB port
(7) RS-485 port (8) RS-232 port
(9) O/P breaker (10) Maintenance bypass switch with cover
(11) Bypass breaker (12) Terminal block for AC connections
(13) EVENTS port (14) Cold start button
(15) EPO switch (16) REPO port
(17) Parallel port 2 (18) Parallel port 1
(19) I/P breaker (20) Terminal block for battery connection

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15-20kVA Rear View (terminal block without cover)
(1) LCD panel (2) Intelligent Slot 1 (SNMP card / Relay card)
(3) Intelligent Slot 2 (SNMP card / Relay card) (4) Dry contact port
(5) Power switch (6) USB port
(7) RS-485 port (8) RS-232 port
(9) O/P breaker (10) Maintenance switch & its cover
(11) Bypass breaker (12) Terminal block for AC connections
(13) EVENTS port (14) Cold start button
(15) EPO switch (16) REPO port
(17) Parallel port 2 (18) Parallel port 1
(19) I/P breaker (20) Terminal block for battery connection

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3.3 LCD Control Panel
LCD Control Panel
（1）LED’s（from top to bottom: “Alarm”, “Bypass”, “Battery”, “Inverter”)
（2）LCD display
3.4 Installation Notes
Note: For convenience during operation and maintenance, the space in front and back of the
cabinet should be at least 40in / 100cm and 31in / 80cm respectively when installing.
◆To prevent the risk of fire or electronic shock, install the UPS in a clean, temperature
and humidity controlled, ventilated environment. Avoid vibration, dust, humidity, corrosives
and flammable gas and liquids. To avoid high room temperatures, room extractor fans are
recommended. Optional air filters are available if the UPS will operate in a dusty environment.
◆The environment temperature around the UPS should be kept in a range of 0°C – 40°C /
32°F - 104°F. If the environment temperature exceeds 40°C / 104°F, the rated load capacity
should be reduced by 12％per 5°C / 41°F. The maximum temperature should not exceed
50°C / 122°F.
◆Batteries should be mounted in an environment where the temperature is within the required
specifications. Temperature is a major factor in determining battery life and capacity. In a normal
installation, the battery temperature should ideally be maintained between 15°C / 59°F and
25°C / 77°F. Keep the batteries away from heat sources or main air ventilation areas.
◆If the equipment is not installed immediately, it should be stored without excessive humidity
and / or heat sources.
WARNING!
Typical battery performance data is quoted for operating temperatures between
20°C / 68°F and 25°C / 77°F. Operating above this range will reduce the battery
life, operation below this range will reduce the battery capacity.
CAUTION!
Unused batteries must be recharged every 6 months. Connect the UPS to a
suitable AC supply for at least 24 hours to recharge the batteries.

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◆The highest altitude that the UPS will operate normally under full load is 1500 meters / 4500
feet. The load capacity should be reduced when the UPS is installed in locations where the
altitude is higher than 1500 meters, according to the following table:
(Load coefficient equals max load in high altitude place divided by nominal power of the UPS)
Altitude
(m / ft)
1500
4500
2000
6000
2500
7500
3000
9000
3500
10500
4000
12000
4500
13500
5000
15000
Load
Coefficient 100% 95% 90% 85% 80% 75% 70% 65%
3.5 External Protective Devices
For safety reasons, it is necessary to install external circuit breaker/s at the AC input supply and
the battery. This chapter provides guidelines for the equipment to be installed by qualified
installers with knowledge of local wiring practices.
◆External Battery
The UPS and its associated batteries are protected against over-current conditions
via a DC compatible thermo-magnetic circuit-breaker (or a set of fuses) located
close to the batteries.
◆UPS Output
Any external distribution panel used for load distribution should be fitted with protective
devices to avoid the risk of overload.
◆Over-Current
A protection device/s should be installed at the distribution panel of the incoming main supply.
It should identify the power cable current capacity as well as the overload capacity of the system.
3.6 Power Supply Cabling
◆The cabling should comply with the voltage and current ratings provided in this section.
Please follow local wiring codes and practices and take into consideration environmental
conditions.
WARNING!
As a preliminary precaution, be aware of the location and operation of
the external isolators which are connected to the UPS input / bypass
supply at the main distribution panel. Check if these supplies are
electrically isolated. Post necessary warning signs to prevent any
hazardous operational conditions.

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Recommended cable sizing is as follows:
UPS
Cable Sizing
AC Input AC Output DC Input Grounding
10kVA
8 AWG
8 AWG
6 AWG
8 AWG
15kVA
6 AWG
6 AWG
2*6 AWG
6 AWG
20kVA
4 AWG
4 AWG
2*6 AWG
4 AWG
CAUTION!
Protective ground cable: Connect each cabinet to the main ground
system. For Grounding connection, follow the shortest route possible.
WARNING!
Failure to follow adequate grounding procedures may result in electro-
magnetic interference or electric shock and/or fire hazards.

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3.7 Power Cable Connections
Once the equipment has been finally positioned and secured, connect the power cables as
described in the following procedure. Verify that the UPS is totally isolated from its external
power source and also all circuit breakers and switches are open. Ensure that they are
electrically isolated and post any necessary warning signs to prevent inadvertent operation.
Open the UPS rear panel and remove the cover of terminals for wiring.
3.7.1 Common Input and Output Connection
M/1R Primary input Line IN / OUT Input / Output
Input-L1: Primary input Phase L1 Output-L1: Output Phase L1
Input-L2: Primary input Phase L2 Output-L2: Output Phase L2
Input-L3: Primary input Phase L3 Output-L3: Output Phase L3
Input-N: Input Neutral for primary and
secondary input Output-N: Output Neutral
GND: Ground GND: Ground
BAT+: Positive terminal of the battery string
BATN: Neutral terminal of the battery string
BAT-: Negative terminal of the battery string

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3.7.2 Split Input Connection
M/1R Primary input Line IN / OUT Input / Output
B/2R Secondary/Bypass input line (optional) Output-L1: Output Phase L1
Mains-L1: Primary input Phase L1 Output-L2: Output Phase L2
Mains-L2: Primary input Phase L2 Output-L3: Output Phase L3
Mains-L3: Primary input Phase L3 Output-N: Output Neutral
Input-N: Input Neutral for primary and
secondary input GND: Grounding
Bps-L1: Secondary input Phase L1 BAT+: Positive terminal of the batteries string
Bps-L2: Secondary input Phase L2 BATN: Neutral terminal of the batteries string
Bps-L3: Secondary input Phase L3 BAT-: Negative terminal of the batteries string

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Warning!
In the case of “split bypass” operation, make sure the copper between
each input lines have been removed. The AC input and the AC bypass
supplies must be referenced to the same neutral point.
Choose appropriate power cabling (refer to the table above). The diameter of the connection
terminal on the cables should be greater than or equal to that of the connection terminal blocks:
WARNING!
If the load equipment is not ready to receive power, ensure that the
system output cables are safely isolated at their ends. Connect the
safety ground and any necessary bonding ground cables to the
copper ground screw located on the base of the equipment below
the power connections. All sections of the UPS must be grounded
properly.
CAUTION!
The grounding and neutral bonding connections must be in
accordance with local and national electrical codes.

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3.8 Battery Connection
The UPS uses a positive and negative double battery structure, totaling 20 pieces in series. A
neutral cable is derived from the connection between the cathode of the 10th and the anode of
the 11th batteries. The neutral, positive and negative cables are connected to the UPS
respectively. The batteries between the battery anode and the neutral are called positive batteries
and those between neutral and the battery cathode are called negative batteries. The capacity
and numbers of batteries is user selectable.
External battery connections for long-runtime units are as follows:
Note: The BAT+ is connected to the anode of the positive battery, the BAT-N is connected to
the cathode of the positive battery and the anode of the negative battery, the BAT- is
connected to the cathode of the negative battery.
The factory default setting for the long backup time unit is for sixteen (16) 12V batteries with a
capacity of 65Ah (with a charger current of 9.75A). When connecting 18/20/22/24 batteries,
re-set the battery quantity and capacity after the UPS starts up in AC mode. The charger
current can be adjusted automatically according to the battery capacity selected. All related
settings can be done via the LCD panel or monitoring software.
CAUTION!
Ensure the correct polarity of the batteries in series connection.
Positive to negative at the terminals. Do NOT mix batteries of
differing capacities, brands, or age (old with new).
WARNING!
Ensure correct polarity of connections to the Battery Circuit Breaker
and from the Battery Circuit Breaker to the UPS terminals i.e. (+) to
(+) / (-) to (-). Disconnect one or more battery cell links in each tier
and do NOT reconnect these links or close the battery circuit breaker
until all the connections have been inspected and verified.

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3.9 UPS Parallel Installation
The following sections describe the installation procedure for parallel installation.
3.9.1 Cabinet Installation
Connect UPS’s as follows for parallel operation:
Ensure that each UPS input breaker is OFF and that there is no output connection from each
UPS. Battery groups can be connected separately or in parallel, meaning that the system
provides both separate batteries and common batteries.
3.9.2 Parallel Cable Installation
Shielded and double insulated control cables must be interconnected in a ring configuration
between the UPS’s as shown below. The ring configuration ensures high control reliability.
3.9.3 Requirements for the Parallel System
Paralleled UPS’s perform as one large UPS system with the advantage of higher reliability. The
following is required in order to assure that all UPS’s are equally utilized and comply with code:
1) All the UPS’s must be of the same rating and connected to the same bypass source.
2) The outputs of all the UPS’s must be connected to a common output bus.
3) The length and specification of power cables including the bypass input cables
and the UPS output cables should be the same. This facilitates load sharing
when operating in bypass mode.

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3.10 Computer Access
◆One end of the USB cable connects to the computer, the other end connects to the USB
port on the UPS.
◆Open the software Muser4000, and click System.
◆The Software Parameter Settingsare shown below. The COM port is chosen according to
the UPS, the baud rate is 9600, and the protocol is “HIP”. Save this setting.

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◆On the main page of Muser4000, click Append, then go to Append Equipment.
◆Enter the UPS name into Equipment Name, and the UPS’s ID address into Equipment
Address.
◆Click Append, then the connection between the UPS & computer will be established.
CAUTION!
To have the UPS operate as an inverter, use a computer to set the output
voltage and frequency. Shut down the inverter prior to setting the unit.

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4. Operation
4.1 Operation Modes
The UPS is a double-conversion on-line UPS that can operate in the following modes:
◆Normal Mode
The rectifier/charger derives power from AC and supplies DC power to the inverter while
providing a float and boost charge to the batteries as required. The inverter converts DC
power to AC to supply to the load.
◆Battery Mode (Stored Energy Mode)
If the AC input power fails, the inverter, which obtains power from the battery, supplies the
load. The UPS will automatically return to Normal Mode when AC recovers.
◆Bypass Mode
If there is a fault with the inverter or if an overload occurs, the static transfer switch will be
activated to transfer the load from the inverter to bypass supply without interruption to the
load. In the event that the inverter output is not synchronized with the bypass AC source,
the static switch will perform a transfer of the load from the inverter to the bypass with
power interruption to the critical AC load. This is to avoid paralleling of unsynchronized AC
sources. This interruption is programmable but typically set to be less than an electrical
cycle e.g. less than 15ms (50Hz) or less than 13.33ms (60Hz).

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◆ECO Mode
When the UPS is in AC Mode and the supply to the load is not overly critical, the UPS can be
set to ECO mode to increase the efficiency of the system. In ECO mode, the UPS works in line-
interactive mode, meaning the UPS will transfer to bypass. When AC is out of a set window, the
UPS will transfer from bypass to inverter and supply power from the batteries. The LCD panel
will display all related information.
◆Maintenance Mode (Manual Bypass)
A manual bypass switch is available to ensure continuity of supply to the load when the
UPS is faulty or being serviced.