Delta Amplon RT Series User manual

Delta UPS - Amplon Family
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RT Series, Three Phase
10/ 15/ 20 kVA
Power Distribution Box
for Single UPS/ Parallel UPSs
User Manual
PDB

AmplonRTSeries 1
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Copyright © 2019 by Delta Electronics Inc. All Rights Reserved. All rights of this User Manual
(“Manual”), including but not limited to the contents, information, and figures are solely owned and
reserved by Delta Electronics Inc. (“Delta”). The Manual can only be applied to the operation or the
use of this product. Any disposition, duplication, dissemination, reproduction, modification,
translation, extraction, or usage of this Manual in whole or in part is prohibited without the prior
written permission of Delta. Given that Delta will continuously improve and develop the product,
changes may be made to the information in this Manual at any time without obligation to notify any
person of such revision or changes. Delta will make all possible efforts to secure the accuracy and
the integrity of this Manual. Delta disclaims any kinds or forms of warranty, guarantee, or
undertaking, either expressly or implicitly, including but not limited to the completeness,
faultlessness, accuracy, non-infringement, merchantability or fitness for a particular purpose of the
Manual.
This manual contains important instructions and warnings that you should follow during the
installation, operation, storage and maintenance of this product. Failure to heed these
instructions and warnings will void the warranty.

2
Table of Contents
Chapter 1: Product Introduction................................................................................ p. 3
Chapter 2: Important Safety Instructions .................................................................. p. 4
Chapter 3: Package List ........................................................................................... p. 6
Chapter 4: Appearance, Dimensions & Panels ........................................................ p. 8
Chapter 5: Installation............................................................................................... p. 13
Chapter 6: Connection.............................................................................................. p. 16
Chapter 7: Operation Procedures............................................................................. p. 34
Chapter 8: Maintenance Bypass .............................................................................. p. 35
Appendix 1: Technical Specifications........................................................................ p. 40
Appendix 2: Warranty ............................................................................................... p. 42

AmplonRTSeries 3
Chapter 1 : Product Introduction
The Delta Power Distribution Box (PDB) with 3U in height is applicable to the Delta Amplon UPSs:
RT-15K3P and RT-20K3P. The PDB can be connected to single UPS/ two parallel UPSs and can
be configured into single-phase/ three-phase output to suit your needs. The PDB provides AC input
power to the UPS and connects the output of the UPS to the critical loads. When your UPS needs
maintenance, you can switch on the PDB’s manual bypass switch to let the power be transferred
from the inverter output to the manual bypass output to ensure continuous power supply to your
critical loads during the UPS maintenance.
The PDB also provides four IEC-320 C13 outlets and two IEC-320 C19 outlets to meet your power
distribution needs.

4
Chapter 2 : Important Safety Instructions
2.1 Safety Instructions
Installation Warnings
Before installation and usage, please read this User Manual thoroughly. This helps you to
use the product correctly and safely.
Install the PDB in a well-ventilated area, away from excess moisture, heat, dust, flammable
gas or explosives.
To avoid fire accidents and electric shock, please install the PDB in an indoor area free of
conductive contaminants and the temperature and humidity must be well-controlled. For the
temperature and humidity specifications, please refer to Appendix 1: Technical
Specifications.
Leave adequate space (at least 50 cm (1.97”)) at the front and rear of the PDB for proper
ventilation.
Connection Warnings
The PDB must be well grounded due to a possible risk of current leakage.
The installation of upstream and downstream protection devices is highly recommended
when the PDB is connected to the UPS.
The protection devices connected to the PDB must be installed near the PDB and must be
easily accessible for operation.
If you need to move the PDB or perform re-wiring, please turn off the AC input power.
Otherwise, the output end might still be energized, which might cause electric shock.
Usage Warnings
To ensure reliable operation of the PDB and to protect the PDB from overheating, the slits
and openings in the PDB must not be blocked or covered.
Before usage, you must allow the PDB to adjust to room temperature for at least one hour to
avoid moisture condensing inside the PDB.
Do not pour and splash any liquid on the PDB. Do not insert any object into the PDB’s slits
and openings. Do not put beverages on or around the PDB.
Do not use any cleaning liquid or cleaning spray to clean the PDB. Before cleaning, please
make sure that the input power cables have been unplugged.

AmplonRTSeries 5
All maintenance services must be performed by qualified service personnel.
Forbid opening or removing the cover of the PDB by yourself to avoid high voltage electric
shock.
You must contact qualified service personnel if either of the following events occurs:
1. Liquid is poured or splashed on the PDB.
2. The PDB does not run normally after the instructions in this User Manual are carefully
observed.
2.2 Standard Compliance
IEC/EN 62040-1
2.3 Storage
Prior to installation
If the PDB needs to be stored prior to installation, it should be placed in a dry and well-
ventilated area. The allowable storage temperature is between -15°C (5°F) and +55°C (131°F)
and the allowable relative humidity (non-condensing) is between 5% and 95%.
After usage
Remove all equipment from the PDB and store the PDB in a dry and well-ventilated area at
a temperature between -15°C (5°F) and +55°C (131°F) and at a relative humidity (non-
condensing) between 5% and 95%.

6
Chapter 3 : Package List
The package contains the following items shown in Figure 3-1. Please check if any item is
missing. If there is anything missing, please contact the dealer immediately.
Models: PDB-RT-10/15/20K
(Figure 3-1: PDB Package List)
No. Item Quantity
1 PDB 1 PC
2 User Manual 1 PC
3 PDB Communication Cable 1 PC
4 Ear Bracket Kit 1 Set
5 Protection Cover with Screws*
1
1 Set
6 Power Cables*
2
2 Sets*
3
Terminal Side (Connects to the UPS)
Connector Side (Connects to the PDB)

AmplonRTSeries 7
NOTE:
1. *1The protection cover should be installed on the PDB to protect the power cables as
shown in Figure 6-16.
2. *2This accessory item is only for the UPS model without the power cables already
being installed on the UPS before shipment. Note that the power cable connection should
be performed by qualified service personal. For details, please refer to 6.2 Connection
with the UPS Model without the Power Cables Already Installed before Shipment.
3. *3For each set, there are 3 power cables: main AC input power cable (4 pins), bypass
input power cable (6 pins) and UPS output power cable (6 pins). Each power cable’s
connector is marked with the colors corresponding to the port on the PDB’s rear panel
(see Figure 4-4) so that you can identify the power cables easily.
4. If there is any damage or anything missing, please immediately contact the dealer from
whom you purchased the unit.
5. If the PDB needs to be returned, carefully repack the PDB and all of the accessories
with the original packing materials.

8
NOTE：
1. There are input, bypass, and output breakers as well as a manual bypass switch
behind the PDB’s front cover. For details, see Figure 4-3 and its following table.
See Figure 4-1 for the PDB’s appearance and dimensions.
(Figure 4-1: PDB’s Appearance & Dimensions)
Chapter 4 : Appearance, Dimensions & Panels

AmplonRTSeries 9
4.1 Inner Front Panel
Remove the PDB’s front cover (see Figure 4-2) and you will see the inner front panel with the
input, bypass, and output breakers as well as a manual bypass switch. For details, see Figure 4-
3and the table below.
(Figure 4-2: PDB’s Front Cover)
(Figure 4-3: PDB’s Inner Front Panel)
NOTE:
1. For the breakers (➊) ~ (➏), when in the upward direction, it means the circuit is
open and the power is turned OFF; when in the downward direction, it means the
circuit is closed and the power is turned ON.

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No. Item Function
❶UPS1 OUTPUT BREAKER Opens or closes the UPS1 output circuit.
❷UPS1 BYPASS BREAKER Opens or closes the UPS1 bypass input circuit.
❸UPS1 INPUT BREAKER Opens or closes the UPS1 main AC input circuit.
❹UPS2 OUTPUT BREAKER Opens or closes the UPS2 output circuit.
❺UPS2 BYPASS BREAKER Opens or closes the UPS2 bypass input circuit.
❻UPS2 INPUT BREAKER Opens or closes the UPS2 main AC input circuit.
❼MANUAL BYPASS SWITCH
(Covered*1)
You can switch ON the manual bypass switch to
transfer the UPS to manual bypass mode so that
the UPS maintenance can be performed without
power interruption. For details, please refer to
Chapter 8: Maintenance Bypass.
NOTE:
*1After you unscrew the 3 screws shown
in Figure 8-1 and remove the warning
cover plate, you will see the manual
bypass switch. Meanwhile, the PDB’s
detector will be activated automatically,
and it will send a message to make the
UPS transfer to bypass mode.
WARNING:
Opening the warning cover plate will
cause inverter shutdown. Only
authorized service personnel can open
and operate it.

AmplonRTSeries 11
4.2 Rear Panel
(Figure 4-4: PDB’s Rear Panel)
No. Item Function
❶
PARALLEL 1/
PARALLEL 2 Port
Connects to the UPS’s parallel ports to
facilitate parallel communication.
❷UPS2 AC INPUT Port*
1
Connects to the main input power cable
installed on the UPS2.
❸UPS2 BYPASS INPUT Port*
1
Connect to the bypass input power cable
installed on the UPS2.
❹UPS2 AC OUTPUT Port*
1
Connect to the output power cable installed on
the UPS2.
❺UPS1 AC INPUT Port*
1
Connects to the main input power cable
installed on the UPS1.
❻UPS1 BYPASS INPUT Port*
1
Connect to the bypass input power cable
installed on the UPS1.
❼UPS1 AC OUTPUT Port*
1
Connect to the output power cable installed on
the UPS1.
❽
AC INPUT Terminals*
2
(behind the knockout cover)
Include mL1 / mL2
/ mL3 / N*
3
terminals which
connect to the main AC source. For details,
please refer to Chapter 6: Connection.

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NOTE:
1. *1There are two sets of ports on the PDB’s rear panel for power cable connection:
(❷) (❸) (❹) and (❺) (❻) (❼).Each set of the three ports are originally covered with
a plate before shipment. Before connecting the power cables, please remove the plate(s).
For details about the power cable connection, please refer to Chapter 6: Connection.
Note that the plate(s) should be reinstalled after you disconnect the power cables from
the PDB.
2. *2To see all the PDB wiring terminals (❽) (❾) (❿), please remove the upper cover
at the rear of the PDB. For the terminal cover location, see Figure 6-6. For the PDB’s
wiring terminals, see Figure 6-7. To perform the PDB wiring, you have to remove the
three knockout covers (see Figure 6-6) and install the cable glands (user-supplied). For
details, please refer to Chapter 6: Connection.
3. *3 For dual-source input configurations, the main AC source and the bypass source
must use the same neutral (N). For details, please refer to Chapter 6: Connection.
❾
BYPASS INPUT Terminals*2
(behind the knockout cover)
Include bL1 / bL2 / bL3 / N*3terminals which
connect to the bypass source. For details,
please refer to Chapter 6: Connection.
❿AC OUTPUT Terminals*2
(behind the knockout cover)
Include L1 / L2 / L3 / N terminals which connect
to the critical loads. For details, please refer to
Chapter 6: Connection.
⓫OUTPUT 1/ OUTPUT 2
240VAC/ 15A Outlet
AC single phase outlets, including two IEC-320
C19 outlets for your power distribution needs.
⓬OUTPUT 1/ OUTPUT 2
BREAKER OUTPUT 1/ OUTPUT 2’s circuit breaker.
⓭
OUTPUT 3/ OUTPUT 4
240VAC/ 10A Outlet
AC single phase outlets, including four IEC-320
C13 outlets for your power distribution needs.
⓮
OUTPUT 3/ OUTPUT 4
BREAKER
OUTPUT 3/ OUTPUT 4’s circuit breaker (two
outlets per breaker).

AmplonRTSeries 13
Please follow the steps below to conduct rack mounting.
Step 1
Fix the ear brackets (provided in the package) onto the PDB and verify that all screws have been
fastened properly. See Figure 5-1.
(Figure 5-1: Fix the Ear Brackets onto the PDB)
Step 2
Adjust the length of the rails to fit in a standard 482.6mm (19”) server rack and then tighten the
nuts (the rails and nuts are provided in the optional rail kit). See Figure 5-2.
(Figure 5-2: Adjust the Rails & Tighten the Nuts)
Ear Brackets
Chapter 5 : Installation

14
Step 3
Use the eight screws and eight washers to fix the rails onto your rack (the screws and washers
are provided in the optional rail kit). See Figure 5-3.
(Figure 5-3: Fix the Rails onto Your Rack)
Step 4
Carefully insert the PDB into your rack and tighten the four screws provided in the ear bracket kit.
See Figure 5-4. Please note that there will be extra four nuts left after installation. These four
nuts are spare parts used when the screw holes of your rack are unthreaded.
(Figure 5-4: Insert the PDB into Your Rack)

AmplonRTSeries 15
NOTE:
When the PDB is connected to UPS(s), the PDB should be installed above or under the
UPS(s) depending on the installation environment. Figure 6-14 and Figure 6-15 are
examples of the PDB being installed above the UPS(s).
Step 5
Remove the four screws on the PDB’s front cover and leave it fixed only by the two clips. The
four screws are to ensure that the PDB’s front cover will not detach during transportation;
however, they must be removed after installation so that users can easily open the PDB’s front
cover by hands to operate the breakers anytime (see Figure 4-3) in case of emergencies.
(Figure 5-5: Remove the Four Screws on the PDB’s Front Cover)

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The PDB provides AC input power to the UPS(s) and connects the output of the UPS(s) to the
critical loads. First, make sure the power cables have been connected to the UPS(s). After that,
connect the PDB with the AC source(s) and critical loads (for wiring only, do not supply the power
at the moment) and then connect the power cables (with the other end already connected to the
UPS’s wiring terminals) to the PDB.
NOTE：
1. You can choose either single-source input or dual-source input and either single-phase
output or three-phase output by adopting different wiring configurations. For details,
please refer to sections 6.3.1 ~ 6.3.4.
2. Regarding connection between the UPS and the Delta’s optional battery pack, refer to
the User Manual and of the UPS and the Delta’s optional battery pack.
6.1 Pre-connection Warnings
The cables to be connected to the PDB’s wiring terminals (❽~ ❿in Figure 4-4) include main
input, bypass input and output cables. When choosing the cables, please follow the local wiring
regulations and consider environmental conditions.
Cable Selection
Table 6-1 shows the nominal current of the PDB with different phase configurations (three-phase
or single-phase). Table 6-2 lists the recommended minimum cross-sectional areas of the cables.
Select the appropriate cables according to Table 6-1 and Table 6-2.
External Protection Device
You must install a circuit breaker (or other protection device) between the main AC source and the
PDB. If you adopt dual-input configurations, you must also install a circuit breaker (or other
protection device) between the bypass source and the PDB. For the capacity of the circuit breakers,
please refer to Table 6-3.
This section provides general guidance for qualified installation engineers. A qualified installation
engineer should be aware of local wiring regulations and other relevant knowledge.
Chapter 6 : Connection

AmplonRTSeries 17
Table 6-1: PDB Nominal Current
Wiring
Configuration
(Input Phase:
Bypass Phase:
Output Phase)
Nominal Input Phase
Current (A)
Nominal Output
Phase Current*1(A)
Rated Input Voltage Rated Output Voltage
220/380V 230/400V 240/415V 220/380V 230/400V 240/415V
(3:3:3)
Main:
63A (3P)
Bypass:
61.2A (3P)
Main:
63A (3P)
Bypass:
58.6A (3P)
Main:
63A (3P)
Bypass:
56.2A (3P)
60.6A (3P) 58A (3P) 55.6A (3P)
(3:1:1)
Main:
41.2A (3P)
Bypass:
91.8A (1P)
Main:
39.4A (3P)
Bypass:
87.9A (1P)
Main:
37.3A (3P)
Bypass:
84.3A (1P)
90.9A (1P) 87A (1P) 83.4A (1P)
NOTE:
1. A maximum voltage drop allowable for each cable is 4Vac.
2. To avoid electromagnetic interference, do not loop the cable.
3. *1The use of non-linear loads will influence your selection of the output and bypass
neutral cables. The current of the neutral cables may exceed the rated phase current and
can be up to 1.732 times the rated phase current. In such a condition, you have to use
cables with larger diameters. Please contact service personnel for more information.

18
Table 6-2: Recommended Minimum Cable Size (Environment Temperature: 25°C (77°F))
Wiring
Configuration
(Input P: Bypass P:
Output P)
Input Output Bypass Neutral Line Ground
mm2 AWG mm2 AWG mm2 AWG mm2 AWG mm2 AWG
(3:3:3) 10 6 10 6 10 6 10 6 10 6
(3:1:1) 10 6
10
× 3PCS
6
× 3PCS
10
× 3PCS
6
× 3PCS
10
× 3PCS
6
× 3PCS 35 1
NOTE:
Only qualified personnel can perform installation, wiring, operation and maintenance.
Prior to supplying any power to the PDB, make sure the PDB has been suitably grounded.

AmplonRTSeries 19
Table 6-3: Protection Device Capacity
Wiring Configuration
(Input P: Bypass P:
Output P)
Recommended Input
Breaker Capacity for
RT-15K3P
Recommended Input
Breaker Capacity for
RT-20K3P
(3:3:3)
With One UPS
50A/ Type D (main)
50A/ Type D (bypass)
With One UPS
63A/ Type D (main)
63A/ Type D (bypass
With Two UPS
100A/ Type D (main)
100A/ Type D (bypass)
With Two UPS
125A/ Type D (main)
125A/ Type D (bypass)
(3:1:1)*1
With One UPS
50A/ Type D (main)
100A/ Type D (bypass)
With One UPS
63A/ Type D (main)
125A/ Type D (bypass
NOTE:
1. For dual-source input configurations, the main AC source and the bypass source must
use the same neutral (N).
2. For the three-phase system, you must use the four-pole protection device. For the
single-phase system, you must use the two-pole protection device.
3. *1Single-phase output is not applicable to the PDB connected to parallel UPSs.