Franklin Electric INCON DTM-4 User manual

FUELING SYSTEMS
GRID SOLUTIONS
EV SYSTEMS
DISTRIBUTION TRANSFORMER MONITOR
INSTALL GUIDE
10000008964 r2
MODEL
DTM-4

The information in this publication is provided for reference only. While every eort has been made to ensure the reliability and accuracy of the
information contained in this manual at the time of printing, we recommend that you refer to the appropriate website for the most current version of
this manual. All product specifications, as well as the information contained in this publication, are subject to change without notice. Franklin Electric
Co., Inc. does not assume responsibility and expressly disclaims liability for loss, damage, or expense arising out of, or in any way connected with,
installation, operation, use, or maintenance by using this manual. Franklin Electric Co., Inc. assumes no responsibility for any infringement of patents
or other rights of third parties that may result from use of this manual or the products. We make no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Copyright © 2023 Franklin Electric Co., Inc., Madison, WI 53718. All world rights reserved. No part of this publication may be stored in a retrieval
system, transmitted, or reproduced in any way, including, but not limited to, photocopy, photograph, magnetic, or other record, without the prior
written permission of Franklin Electric Co., Inc.
For technical assistance, please contact:
franklinfueling.com
3760 Marsh Rd. • Madison, WI 53718 • USA
Tel: USA & Canada [phone] • Fax: [phone]
Tel: UK [phone] • Tel: Mex 001 800 738 7610
Tel: DE [phone] • Tel: CH [phone]
Incon is registered trademark of Franklin Electric Company, Inc.
10000008964 r2
Conventions used in this manual
This manual includes safety precautions and other important information presented in the following format:
NOTE: This provides helpful supplementary information.
IMPORTANT: This provides instructions to avoid damaging hardware or a potential hazard to the environment, for example: fuel leakage from
equipment that could harm the environment.
CAUTION: This indicates a potentially hazardous situation that could result in minor or moderate injury if not avoided. This may also be used to
alert against unsafe practices.
WARNING: This indicates a potentially hazardous situation that could result in severe injury or death if not avoided.
DANGER: This indicates an imminently hazardous situation that will result in death if not avoided.
Operating precautions
WARNING: IMPORTANT SAFETY INSTRUCTIONS. BEFORE INSTALLING ANY FRANKLIN ELECTRIC GRID SOLUTIONS EQUIPMENT, READ THIS
GUIDE AND FOLLOW SAFETY AND OPERATING INSTRUCTIONS. SAVE THESE INSTRUCTIONS.
WARNING: Do not disassemble any equipment; contact Franklin Electric Grid Solutions when a repair is required. Incorrect reassembly may result
in a risk of electric shock or fire.
WARNING: To avoid electric shock, abide by your company’s safety practices and the following guidelines:
WARNING: Perform service work only for which you have been trained.
WARNING: Refer to NFPA 70E for electrical safety requirements.
WARNING: Use of Personal Protection Equipment (PPE) and Protective Clothing per NFPA 70E guidelines is required. Some examples of these,
but not limited to, are: Electrical-insulating Protective gloves, Protective footwear; Protective clothing for voltage levels, Insulated rescue hooks or
other means for pulling personnel from live circuits.
WARNING: Before working with electricity, remove personal metal items such as rings, bracelets, necklaces, watches, etc. A short-circuit current
can be high enough to weld such items, causing a severe burn.
WARNING: Always wear safety glasses with side shields.
WARNING: To avoid a risk of serious injury or death, DO NOT come into contact with any source of live, electric current.
WARNING: Avoid simultaneous contact with live conductors and enclosures, racks, or hardware that may be grounded.

Contents
1 Introduction.......................................................................................................................1
1.1 Documentation..........................................................................................................1
1.1.1 Symbol Legend ...............................................................................................1
2 Safety/Security ..................................................................................................................2
2.1 General Safety Information.........................................................................................2
2.2 Hazard Assessment ...................................................................................................2
2.3 Required Personal Protective Equipment (PPEs) ........................................................2
3 Installation.........................................................................................................................3
3.1 Overview ...................................................................................................................3
3.1.1 Technical Specifications..................................................................................4
3.2 Pre-Installation Inspection .........................................................................................4
3.3 Required Tools...........................................................................................................5
3.4 Instructions ...............................................................................................................5
3.4.1 Mounting ........................................................................................................5
3.4.2 DTM-4 Transformer Connections.....................................................................6
3.4.3 DTM Setup .....................................................................................................9
3.4.4 Configuration................................................................................................11
3.4.4.1 System ID ......................................................................................11
3.4.4.2 System Preferences .......................................................................12
3.4.4.3 System Configuration .....................................................................12
3.4.4.4 Date/Time......................................................................................13
3.4.4.5 User Roles .....................................................................................13
3.4.4.6 Address Book.................................................................................14
3.4.4.7 Networking ....................................................................................15
3.4.4.8 Communications............................................................................16
3.4.4.9 Cellular ..........................................................................................16
3.4.4.10 Email .............................................................................................17
3.4.4.11 Diagnostics ....................................................................................17
3.4.4.12 Transformer ...................................................................................18
3.4.4.13 Temperature Inputs........................................................................19
4 Appendix.........................................................................................................................20
4.1 Wiring Diagrams ......................................................................................................20
4.2 Status Indicator .......................................................................................................22

Intentionally Blank

1
1 Introduction
The INCON™ Distribution Transformer Monitor (DTM-4) provides continuous,
meter-grade precision performance monitoring of high-value, mission critical, low
voltage pad mount transformers and conventional pole mounted transformers.
1.1 Documentation
• This document is intended for qualified and certified installation persons.
• Instructions of this document are in English. All other language versions are
translations of this original document.
• Illustrations in this document show a typical setup and are for instruction and
description purposes only.
• The information given in this document is given as a guide only. It is the
installer's responsibility to ensure that correct and safe procedures are followed
at the worksite.
• This document and related documents are available from:
Franklin Electric at www.franklingrid.com.
1.1.1 Symbol Legend
Wear Protective Headwear Wear Eye Protection
Wear Protective Clothing Wear High-Visibility Clothing
Wear Protective Gloves Wear Safety Footwear
Refer to instruction guide. Connect an earth terminal to the ground
Disconnect main plug from electrical outlet.
Disconnect before carrying out maintenance or repair.
Warning: Electricity General Warning
Warning: Flammable Material
No open flame; Fire, open ignition source and smoking prohibited

2
2 Safety/Security
2.1 General Safety Information
• Only perform procedures in this document that you are qualified and certified to perform.
• Personnel working on or with energized equipment must be authorized by
relevant regulatory bodies to carry out such work and must have the appropriate
training. Check with your employer and relevant regulatory body’s rules for
working with energized equipment.
• Obey all local laws, rules, regulations, and instructions in this document. In
case of inconsistency or contradiction between information contained in this
document and any laws, rules and regulations, obey the stricter of the two.
• Keep unqualified personnel at a safe distance during installation.
• Always wear all required PPE on-site and during installation.
• If it is necessary to remove safety/security devices, immediately reinstall the
safety / security devices after completing the work.
2.2 Hazard Assessment
Prior to beginning work and prior to recommencing work after leaving and returning
to the worksite, a worksite, pre-job hazard assessment must be performed to identify
safety and environmental needs. At a minimum, this hazard assessment should:
• Identify possible hazards and risks.
• Identify the safety needs of the job.
• Identify the correct procedures, practices and equipment.
• Eliminate unsafe conditions and actions from the worksite.
• Identify the need for personal protective equipment.
• Inspect equipment before use.
• Confirm sheaths of all cables are secured and undamaged.
• Confirm plugs and connectors are properly connected and serviceable.
• Perform ongoing risk assessment during the project.
2.3 Required Personal Protective Equipment (PPEs)
These PPEs are required during all phases of installation.
Wear Protective Clothing Wear Eye Protection
Wear High-Visibility Clothing Wear Protective Gloves
Wear Protective Headwear Wear Safety Footwear

3
3 Installation
3.1 Overview
The Distribution Transformer Monitor (DTM-4) is an online continuous performance
monitor designed for low voltage transformers. It provides information for the process
of Condition-Based Maintenance performing these primary functions:
1. Measurement of transformer output line voltage (direct connection).
2. Measurement of transformer loading (current) by phase (Rogowski Coils).
3. Measurement of top and bottom temperature (magnetic temperature sensors).
The DTM-4 is designed to be installed near the transformer’s control cabinet or
mounted near the transformer. Usually, these
are the most convenient mounting places
because there is easy access to the
transformer secondary terminals,
where current sensors are
mounted, and low
voltage connections
are made.
If the transformer
does not have a
control cabinet,
the DTM-4 may
also be installed in
a separate enclosure
or mounted to the
exterior of the transformer
housing. The DTM-4 itself is
weather-proof.
The DTM-4 can be applied to any
type of distribution transformer with
an output of 480 volts or less, phase to
neutral. The DTM-4 is used on larger 3-phase transformers.
The DTM-4 Installation has been kept simple, with few connections required to
the transformer. Direct connection (1) to transformer secondary to measure line
voltage and Rogowski Coils (2) to measure load current. Magnetically mounted
RTD temperature sensors (3) are used to measure top and bottom transformer
temperature.
Most attributes can be compared to static alarm settings for assertion when they go
out of tolerance. The DTM-4 issues alarms via cellular network, through HTTPS web
service, locally or remotely.

4
3.1.1 Technical Specifications
Table 3.1 – Transformer Monitor
Feature Description
Model DTM-4 Applications 3-Phase Wye, 100–480 V Line-Neutral, 50/60 Hz.
3-Phase (3 and 4-wire) Delta, 480 V Line-Line, 50/60 Hz.
3-Phase Corner-Grounded Delta, 100–480 V Line-Line, 50/60 Hz
Tolerances Voltage ±10%, Frequency ±5%
Power Source Powered from the transformer secondary via Phase A & N voltage leads
Temperature Sensors 2 each RTDs, 25 lb. Magnetic-mounted, 5-foot lead length
Current Sensors 4 (DTM-4) each, Rogowski Coils, 5-foot lead length
Fuses Internal fuses on phase A and neutral leads (2 Amps)
Table 3.2 – Communications
Feature Description
Local Communication Wi-Fi (TCP/IP)
User Interface Embedded web server running on Linux platform accessible via standard
web browser. The default URL is https://192.168.170.170
Protocols MQTT
Embedded Device Options Cat M1 Cellular
LED Indicator Tri-color LED indicating running and alarm states (can be deactivated)
Table 3.3 – Environmental
Feature Description
Enclosure IP/NEMA Rating IP66/NEMA 4X
Operating Temperature/Humidity -40° C to +60° C / 0 – 90% RH
Storage Temperature/Humidity Range -40° C to +85° C / 0 – 95% RH
Table 3.4 – Mechanical
Feature Description
Size (W x L x H) 6.25 x 7.75 x 3.75 in
Weight 5.5 Pounds
Mounting Magnet-mount provided
3.2 Pre-Installation Inspection
Upon receipt of your item(s),
1. Verify all items are in accordance with the order.
2. Check all items for damage.
3. If any item shows damage or is not in accordance with the order, inform
Franklin Electric Grid Solutions immediately.
4. Remove the packaging material.
• Follow all local laws, rules and regulations regarding disposal of discarded
parts, packaging material or items and any subsequent components.

5
3.3 Required Tools
3.4 Instructions
3.4.1 Mounting
Mount the DTM in a location where the Voltage Leads and Rogowski Coils can reach
their intended positions on the transformer. Recommended Mounting Locations are
listed below. Always check with your local utility to confirm approved DTM mounting
locations before installing.
Pad Mounted Transformers:
• Inside the transformer control/wiring cabinet.
• On the outside of the transformer enclosure.
• In a separate enclosure, mounted to the side of the transformer.
Pole Mounted Transformers:
• On the under-side of the transformer housing.
• On the supporting structure, below or behind the transformer.
NOTE: The DTM-4 has an attached mounting plate with a cable loop (1), to
prevent cable fatigue and has four strong magnets (2). Do not remove the DTM
from the mounting plate!
WARNING: Under no circumstance should the DTM-4 be opened, severe
injury or death could result.

6
3.4.2 DTM-4 Transformer Connections
NOTE: Pad mount connection illustrations are shown on pages 6 and 7. Pole mounted
transformer (single core) connections are shown on page 8.
IMPORTANT: Do not cut or attempt to alter the length of the temperature sensors,
Rogowski Coil cables or voltage leads. Roll excess cable into bundles as needed and
securely fasten in a safe location.
Pad Mount Illustrations
Order of connection.
Details listed below.
Pad / Pole (Single Core) Mount Install Sequence
1. Mount the magnetic RTD TEMPERATURE SENSORS to
the transformer housing as close to the transformer core as
possible, one near the bottom, one near the top.
NOTE: The RTD Temperature Sensors are labeled “1” with
a blue flag and “2” with an orange flag. By default RTD “1”
should be on top and can be set in the configuration.
NOTE: To remove the magnetic RTD Temperature sensors, pull from the
magnet's surface. Do not pull from the cable.
2. Open the ROGOWSKI COILS by twisting the loop where it meets the hub on the
side where the wire connects it to the DTM.
3. Make sure the arrow on the hub of the ROGOWSKI COIL points towards the load.
4. The ROGOWSKI COILS are labeled by phase. Make sure the coils are on the
correct phase conductors.
5. Connect the appropriate VOLTAGE LEADS to the output (secondary) terminals
using the proper hardware.
NOTE: The Voltage Leads are color-coded:
Phase A=BLACK; Phase B=RED; Phase C=BLUE; Neutral=WHITE; Ground=GREEN.
1
2
1
2

7
PHASE A
CURRENT INPUT
NEUTRAL
PHASE B
CURRENT INPUT PHASE C
CURRENT INPUT
1
2
VOLTAGE
LEADS
IMPORTANT: Roll excess Temperature
Sensor, Rowski Coil, or Voltage Lead
wire into bundles as needed, and
securely fasten them in a safe location.
INPUT
POWER
LOAD

8
Pole Mount (Single Core) Illustrations
1
2
1
PHASE A
CURRENT INPUT
NEUTRAL
PHASE B
CURRENT INPUT PHASE C
CURRENT INPUT
1
2
VOLTAGE
LEADS
INPUT
POWER
LOAD
IMPORTANT: Roll excess Temperature
Sensor, Rowski Coil, or Voltage Lead
wire into bundles as needed, and
securely fasten them in a safe location.

9
3.4.3 DTM Setup
All user interface communication including configuration of alarms and settings, data
viewing, and alarm resetting is made via the CONVERGE™ web interface. Configuration
can be done locally via Wi-Fi using a web browser or remotely through the cellular
connection.
1. The default Wi-Fi name is the DTM's Device ID, a 16-digit, hyphenated hex string
(as shown below).
2. The default Wi-Fi pass phrase is the serial number on the label.
DISTIBUTION TRANSFORMER MONITOR
MODEL: DTM-4
DSN: S202102090001
ICCID: 89011704278529730816
IMEI: 356812100066206
CARRIER: AT&T
01-4132-2C30-EED4-CD
Secured
Enter the network security key
Next Cancel

10
3. The default URL is https://192.168.170.170.
a. A warning will appear saying "No Certificate."
b. Click "Accept risks and continue" to access the DTM interface.
192.168.170.170
192.168.170.170;
192.168.170.170
192.168.170.170
4. The first time connecting to the device, a prompt to create a password will
appear. This will create the password for the username: admin. The following
password criteria is required:
• 12-36 characters including at least one each of the following.
• Uppercase letter.
• Lowercase letter.
• Number
• Symbol.
5. After creating the password, log in using the username admin and the password
just created.

11
3.4.4 Configuration
Navigation: System > Configuration.
NOTE: You must press ENTER after typing information in text boxes or data will not be saved.
The Configuration page after initial log in:
3.4.4.1 System ID
Navigation: Settings > Configuration > System ID.
• Site Name: Physical name of site.
• Information is used to identify the site.
• ID Line: Contains physical address of site
• Typically references transformer number or other unique identifier.
• Other data can be entered such as:
• IP address.
• Serial number.
• Phone numbers.

12
3.4.4.2 System Preferences
Navigation: Settings > Configuration > System Preferences.
• Language: Set system language.
• Regional Formats: Set Regional Format.
• Units: Set units of measurement for temperature, density, pressure, length,
volume, mass, and power.
3.4.4.3 System Configuration
Navigation: Settings > Configuration > System Configuration.
Set up with the information of the transformer being monitored.
• Frequency: The operating frequency of the transformer.
• Transformer Mode: The type of transformer configuration being monitored
(delta, wye, single phase, split phase).
• Temperature Input Assignment: Locations of the two temperature sensors on
the transformer housing. Sensor 1 (blue label) and Sensor 2 (orange label).
• Auto Clear: Set to YES to automatically clear latching alarms (Dip/Swell, etc.) after
24 hours. These alarms can be cleared manually using the UI or MQTT polling.
• HAL Logging Level: For Debugging only, leave at 0.

13
3.4.4.4 Date/Time
Navigation: Settings > Configuration > Date/Time.
• Time Zone: Select correct time zone.
NOTE: Always set Time Zone first and save changes before setting the clock time
on the DTM. Doing so will avoid the time changing to match time zone change.
• NTP Servers: Network Time Protocol (NTP) used for time synchronization.
• Enter IP address for NTP server if using NTP.
• NTP server must be removed to manually set Date / Time.
3.4.4.5 User Roles
Navigation: Settings > Configuration > User Roles.
• Use +/- to add or remove user roles.
• Name: Enter name of user role to define (user role or position type).
• Administrator: Select YES or NO to grant specific permissions for each user.

14
3.4.4.5.1 Users
Navigation: Settings > Configuration > User.
Individual user account creation with associated role, preferences, and units.
NOTE: Admin does not require name but does require a password.
• Name: Enter name of user.
• Password: Enter password for user.
• Preferences: Selected language, regional formats, and home web page screen
for each user.
• Units: Set specific units for each user.
3.4.4.6 Address Book
Navigation: Settings > Configuration > Address Book.
Contact list used to email notifications or reports.
• Select “+” to add additional contacts .
• Name: Enter name of contact.
• Email Address: Enter contact email address.

15
3.4.4.7 Networking
Navigation: Settings > Configuration > Networking.
Users can define available network connection settings (Wi-Fi and IPv4).
3.4.4.7.1 Wi-Fi
Navigation: Settings > Configuration > Networking > Wi-Fi.
Set up Wi-Fi with desired information including an alternate SSID and passphrase.
• All User Interface communication including configuration of alarms and settings,
data viewing and alarm resetting can be done locally, via Wi-Fi, using a web browser.
• The default URL is https://192.168.170.170. A warning will appear saying “No
Certificate.,” Click “Accept risks and continue” to access the UI of the DTM.
The first time the device is connected to, a prompt to create a passphrase will
appear. This will create the passphrase for the username: admin.
• The default Wi-Fi name (the DTM’s Device ID, beginning with “00”).
• The default Wi-Fi passphrase (the serial number on the label).
NOTE: The passphrase will always display “******” when not being modified.
NOTE: The default administrative credentials are created by the user during the initial startup.
3.4.4.7.2 IPv4
Navigation: Settings > Configuration > Networking > Wi-Fi > IPv4.
• Method: Manual or DHCP (Enter IP address manually or obtain valid IP address).
• Address: IP address on network or static IP provided by service provider.
• Netmask: Must match local Wi-Fi configuration.
• Gateway: Logical address to nearest router port.
• DNS Servers: Domain Name Systems (DNS) server address required if using
email functionality.
• Search Domains: URL address of site.
• DHCP Server: Select Disabled or Enabled (only if instructed by IT department).

16
• Start: Enter value (2-254).
• Limit: Enter value (1-50).
• Lease Time: Enter minutes (2-1440).
NOTE: Changing the IPv4 information will change the IP address that will access the
user interface.
3.4.4.8 Communications
Navigation: Settings > Configuration > Communications.
The main protocol used is Message Queuing Telemetry Transport (MQTT) which can be
set up to a custom MQTT broker or to Franklin Electric’s UNITE™ Platform by entering
the appropriate information.
• Enabled: Select YES / NO (sets machine to machine telemetry transport).
3.4.4.9 Cellular
Navigation: Settings > Configuration > Cellular.
All User Interface communication including configuration of alarms and settings, data
viewing and alarm resetting can be done remotely, via the cellular network including:
• Data transfer using MQTT protocols.
• Firmware upgrades.
Configuration
• Enabled (Cellular): Set to YES to connect via the cell network.
• PPP: Set to Enable.
• Communication Test Hosts: Enter DNS IP addresses separated by spaces to
allow the DTM to ensure it always has a connection by pinging those servers.
NOTE: Recommended addresses are: 8.8.4.4 and 8.8.8.8