Qualitrol SERVERON TM1 User manual

810-1902-03RevD TM1 Installation Guide
www.
serveron
.com
On-Line Transformer Monitor
Installation Guide - Model TM1
January 2019
Document ID: 810-1902-03 Rev D

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serveron
.com
Information in this document is subject to change without notice. This document is provided to purchasers of Serveron®
productsfor usein the installation, operation and servicing of such products. No other use, nor anyreproduction, distribution
or the making of any derivatives of this document is authorized, without the express prior written permission of Serveron®
Corporation.
Serveron®endeavors to ensure the accuracy and quality of its published materials; however, no warranty, expressed or
implied, is provided. Serveron®disclaims any responsibility or liability for any direct or indirect damages resulting from the
use of the information in this manual or products described in it. Mention of any product or brand does not constitute an
endorsement by Serveron®of that product or brand.
This document was originally composed in English and was subsequently translated into other languages. The fidelity of
subsequent translations cannot be guaranteed. In case of conflict between the English version and another language
version, the English version takes precedence.
© 2019 Serveron®Corporation. All rights reserved. Information subject to change without notice.
QUALITROL is a registered trademark of Qualitrol Company LLC. Serveron, LOADGUIDE, and TRUEGAS are registered trademarks and TM1, TM2, TM3 and TM8 are trademarks of
Serveron®Corporation.
All trademarks are properties of their respective companies, as noted herein. 810-1902-03 Rev D

Contents
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serveron
.com
Contents............................................................................................................................................. 1
Product Overview ............................................................................................ 2
System Description..................................................................................................3
Product Symbols......................................................................................................4
Warranty....................................................................................................................5
Environmental ..........................................................................................................5
Items Shipped .................................................................................................. 6
Monitor Installation.......................................................................................... 7
Site Preparation........................................................................................................7
Tools / Materials Required.......................................................................................7
Mounting the Monitor...............................................................................................8
Wiring Terminations...................................................................................... 11
Power ......................................................................................................................11
I/O Connections......................................................................................................12
RS485 / RS232 Wiring ............................................................................................13
4-20mA Output Wiring ...........................................................................................14
Relays......................................................................................................................15
Bleeding Air from the Monitor...............................................................................16
Monitor Configuration and Dimensions...................................................... 17
Monitor Configuration............................................................................................17
Shipping Dimensions.............................................................................................17
Monitor Dimensions...............................................................................................18

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Product Overview
The TM1 is a remotely-deployed transformer monitor which can be safely installed onto an energized
or non-energized transformer to detect and measure dissolved hydrogen found in an electrical power
transformer‘s insulating oil. The monitor is designed and constructed to operate in environmental
conditions in Power Plants, Switchyards or Substations.
The TM1 is directly mounted to an existing valveon the transformer and circulates transformer oil within
it to provide a continuous reading of hydrogen in ppm. Data can be viewed with the supplied TM View
software or via a customer’s SCADA system (RS485 / RS232) using Modbus or DNP3 protocol and will
allow the end user to track the hydrogen ppm levels over time and compare against user-defined
caution and alarm settings.
The TM1 monitor includes two 4-20mA inputs for use with an optional moisture sensor. In addition to
the inputs, there are three 4-20mA outputs. Also included are three user-programmable relays, as well
as relays for service-related conditions and loss-of-power.
The TM1 measures hydrogen (H2) without cross-interference from other gases. Hydrogen is formed
under all known thermal fault conditionsin the transformer and is one of the first gases to be generated,
making it an excellent early indicator of a broad range of fault types.
Note: The TM1 is designed for use on mineral-oil, FR3 and silicone oils.
The TM1 is designed to be installed and configured by the end-user. Configuration of the monitor’s
alarms, settings and options is accomplished using a PC-based TM1 Configuration Utility Tool
described in greater depth in the TM1 Operation & Maintenance Guide (810-1928-01).

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System Description
The TM1 measures hydrogen using a patented, solid-state sensor made of Palladium. The sensor is
in direct contact with the transformer oil; neither gas extraction nor membranes are utilized. An electric
potential is applied to the palladium sensor. When hydrogen from the oil contacts the sensor, the
electrical properties of the palladium sensor change, resulting in a change in the electrical output of the
sensor. This electrical change is proportional to the concentration of hydrogen in contact with the
sensor and is reported as ppm H2. Using the ppm results, ROC is calculated and reported in units of
ppm/day.
The temperature of the measurement environment is precisely controlled in order to ensure stable
readings. The TM1 will make one measurement approximately every 30 minutes. The exact time
between measurements is a function of the temperature of the incoming oil. Therefore, the time
between measurement results may vary slightly.
TM1 data is stored onboard in non-volatile RAM. At least two years’ worth of the most recent data is
stored. Once the available memory is full, data is overwritten in a first-in, first-out manner. Several
communication options allow for the transfer of data in near real-time, or discrete batch download of
data is available via the USB port.
The major components of the TM1 include:
H2Sensor – Palladium sensor selective for H2gas
Oil Circulation System – utilizesa patent-pending design that eliminatesthe need for areciprocating
or positive-displacement pump. More robust in design, the auger-style TM1 pump is used to
provide a representative oil sample at the sensor.
Heater – provides thermal control of measurement environment
Electronics – power supply, analog inputs and outputs, alarm relays, system board and
communications ports
Enclosure – IP66 /NEMA 4X rated enclosure with integrated sunshield
Transformer connections – 1½” NPT valve (can be adapted to other sizes), power and
communication wiring glands, bleed port.
Display – Touch activated. Displays hydrogen level, hydrogen rate of change, alarm status, and
service status.

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Product Symbols
The following symbols are used throughout the Transformer Monitor or accessories. They are defined
by the International Electrotechnical Commission, IEC 878 and IEC 417A. It is important for safety
reasons to have an understanding of their representation.
Voltage Input
Fuse
High Voltage
Caution: Refer to On-Line Transformer Monitor Installation Guide and accompanying
documentation.
Protective Earth (ground)
L1 Connect to mains live conductor (brown)
L2 Connect to mains neutral conductor (blue)
__I__
O
The Iposition indicates the power switch is ON
The Oposition indicates the power switch is OFF
This device has been tested and certified by UL to comply with applicable U.S. and
Canadian safety standards.
Table 1: Product Symbols
WARNING statements in this manual identify conditions or practices that could result in personal
injury.
CAUTION statements in this manual identify conditions or practices that could result in damage to
the equipment or other property.
NOTE statements provide additional important information.

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Warranty
Serveron warrants its Goods to be free from latent defects in materials or workmanship for 24 months
from the date of shipment. Serveron will repair or replace, at Serveron’s discretion and without cost to
Buyer, any Goods furnished hereunder that are found to contain defects in materials or workmanship
during that period. Serveron uses new and reconditioned parts in performing warranty repairs and
building replacements. Serveron owns all Goods it has replaced and all parts removed from repaired
Goods. It is Buyer’s responsibility to return the Goods to Serveron for warranty coverage. This
warranty does not coveritems damaged in shipment or damages resultingfrom misuse, neglect, abuse,
acts of war or acts of God. Serveron recommends using the provided shipping material and packing
inserts for transportation. The TM1 is designed to be mounted and used in normal transformer
operation. It is not designed to be mounted or affixed to the transformer or any other device during
transportation; doing so is subject to void all and any warranties. Prior to returning any item (whether
during the warranty period orout of warranty), Buyermust obtain a Return Material Authorization (RMA)
number from Serveron by calling [phone] Monday through Friday, 8 am to 5 pm, Pacific Time,
or by sending a fax request to [phone]. Serveron makes no warranties, expressed or implied,
other than the warranties expressly statedin this paragraph. All other warranties, expressed or implied,
arising by law or otherwise, including, but not limited to, the implied warranties of title, merchantability,
non-infringement and fitness for a particular purpose, are expressly disclaimed. Serveron’s product
operations manuals and product installation guides describe approved accessories, options, operating
materials and installation methods. Use of accessories, options, operating materials and installation
methods not as described, will void the warranty.
Environmental
The TM1 is designed to operate within the following outdoor conditions:
Altitude Range -2000 to 15,000 ft. (-610 to 4,572 m)
Humidity Range 5% to 95%
Temperature Range -50°C to +55°C
Oil Inlet Pressure 0 to 100psi
Oil Inlet Temperature -20°C to +105°C
Installation Category 1
Pollution Degree 1
Altitude, humidity, and temperature ranges indicated are considered extended environmental conditions
from the minimum ranges required by ICE/UL/CAN 61010-1, Clause 1.4.1.

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Items Shipped
Upon receipt of your TM1 Transformer Monitor, it is important to verify the contents of the shipping
carton with the packing list. After inspection of the contents, please notify Serveron directly if there are
any signs of damage that may have occurred in transit. If possible, please retain the original shipping
container and packing materials in the event that it becomes necessary to return the monitor.
Part
Number Description
782-0042-00 TM1 Transformer Monitor
140-0342-00 Uni-tee, 1 ½” NPT Stainless Steel
253-0216-00 Set Screw, ¼-20 3/8”L
250-0258-00 Plug, ½” NPT
250-0259-00 Plug, ¼” NPT
642-0020-00 Quick Clamp
252-0038-00 Lock Nut
254-0117-00 Washer
259-0045-00 Gasket
420-0118-01 Oil Inlet assembly
160-1514-05 USB Flash Drive (Contains all User documentation)
291-0060-00 Disposable Syringe, 20ml
648-0107-00 Tygon Tubing (6 inches)
250-0249-00 Luer Fitting, Male
250-0250-00 Luer Fitting, Female
900-0082-60 Oil Moisture / Temperature Kit (optional)
Table 2: Items Shipped

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Monitor Installation
CAUTION: Do not attempt to install your TM1 On-Line Transformer Monitor until you have read and
fully understand the procedures outlined in this document.
Installation of the TM1 consists of the following:
Site preparation
Mounting the monitor
Wiring the monitor
Bleeding air from the monitor
Configuration
Site Preparation
NOTE: Serveron recommends a minimum size of 1” for the transformer oil supply valve and a minimum of
6” vertical clearance between the valve centerline and the transformer foundation for proper installation space.
Ensure the following prior to mounting the monitor:
An adequate valve location for mounting the TM1 monitor has been identified
Power is present and available at the installation site for the monitor
Transformer is oil-filled
All shipped items have been located
Tools / Materials Required
The following tools are required for installation of the TM1 monitor:
7/16”, ½” and 1 ½” wrenches (or an adjustable wrench)
1/8”, 3/16”and 3/32” Allen keys (3/16” Allen key used for optional Moisture Kit only)
Small flat-blade screw driver
Large flat-blade or Phillips screwdriver
Teflon tape and pipe-thread sealant
Wire strippers/cutters
Container to collect oil during installation
Pipe wrench

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Mounting the Monitor
NOTE: If the desired valve is not 1 ½” NPT, then the appropriate hardware must be installed.
NOTE: Whenever installing or un-installing the monitor, the cover must be installed and secured.
The cover only needs to be removed when wiring the monitor, servicing it or connecting to the
service port with a USB cable.
1) Ensure the transformer valve is closed and remove any existing plug on the valve. Position a
container to collect any oil after removing the plug. Remove any debris from the threads.
2) Wrapthe threads of the supplied stainless-steel
uni-tee with Teflon tape and apply a thin layer
of pipe-thread sealant. Insert the tee into the
transformer valve and tighten, ensuring the ½”
NPT plug is oriented vertically as shown in (Fig
1).
Figure 1: Tee Orientation
3) Remove the ¼” NPT plug from the tee and
apply Teflon tape and pipe-thread sealant to the
threads, then re-install in the tee (Fig 2). If the
optional Moisture Kit will not be installed,
remove the ½” NPT plug and apply Teflon tape
and pipe-thread sealant to it as well. Then re-
install in the tee. If the Moisture Kit will be
installed, remove the ½” NPT plug from the tee
entirely.
Figure 2: 1/2” and ¼” NPT plug

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4) Remove the yellow protective shipping cap and
absorbent pad from the end of the TM1. It is normal
to see a small amount of oil after removing the cap.
Install the Oil Inlet assembly into the threaded hole
on the back of the TM1 (Fig 3) and tighten,but do not
over-tighten.
Figure 3: Oil Inlet Assembly
5) Install the black gasket onto the uni-tee, ensuring
that it is seated in the groove, as shown (Fig 4).
Figure 4: Mounting the Monitor
6) While properly supporting the TM1, position it on the open end of the uni-tee, carefully inserting the
tube of the oil inlet assembly into the tee. Make sure the gasket is properly seated between the tee
and the TM1. Install the clamp, capturing the uni-tee and the TM1 flanges as shown (Figs 5 & 6).
Make sure the flat washer is directly under the nut as shown and tighten the nut on the clamp,
ensuring that the TM1 is oriented vertically.
Figure 5: Clamping Flange Figure 6: Quick Clamp Installed

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7) If installing the optional Moisture Kit, wrap the threads of the moisture
probe body with Teflon tape and apply a thin layer of pipe-thread sealant.
Insert the fitting into the uni-tee and tighten as shown (Fig 7).
Figure 7: Moisture Probe
8) Place a container under the uni-tee. Partially open the transformer valve. Using a 1/8” Allen key,
slowly loosen the set-screw until oil exits the bleed hole (Fig 8), then tighten the set screw and
close the transformer valve.
Figure 8: Set Screw and Bleed Hole
9) Insert the green connector of the supplied signal cable to the top of the moisture probe body. The
connector is keyed, so it will align correctly in the probe connector (Fig 9).
Figure 9: Moisture Probe Signal Connector
Bleed hole
Set Screw

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Wiring Terminations
The following section outlines the wiring terminations for power, I/O, and relays
Power
Input: 100 to 240VAC, 50/60Hz
Power: 120VAC - Max 0.5A, nominal 0.1A @ 25°C
240VAC – Max 0.25A, nominal 0.05A @ 25C
NOTE: A switch or circuit breaker should be installed in close proximity to the equipment, easily
accessible by an operator and be clearly marked as identifying its use. The equipment is to be
installed in accordance with local and national electrical codes and installed by a licensed electrical
installer. Remove the 4 thumb-screws (or socket-head screws) securing the cover of the TM1.
1. Determine the power source for the TM1 (e.g. 120VAC, 240VAC.). Make sure the power
is locked out at the source.
2. Insert the power cable through the small center gland fitting and connect as follows:
NOTE: Recommended minimum torque for the power connector terminal is 5 in-lbs.
Terminal Conmnections 120VAc 240VAC
Earth GND GRN/YLW GRN/YLW
L1 BRN or BLK - Line RED
L2 BLUE or WHT - Neutral BLK
Table 3: Power Terminations
3. Tighten the gland fitting to provide a secure weather-tight seal.
4. Source power should remain off until all wiring service has been completed.
Figure 10: Cable Locations Figure 11: Power Terminals
AUX2
GND, L2, L1
AUX1
Power

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NOTE: Gland Fitting Information –
Large Gland (AUX1 and AUX2) – Accepts a multi-conductor cable with 0.31” to 0.63” OD
Hole size is 0.850”
Small Gland (Power) – Accepts a multi-conductor cable with 0.2” to 0.47” OD
Hole size is 0.690”
I/O Connections
1) Refer to the figure below to identify the various wiring connectors.
NOTE: IO cable must be shielded and grounded
2) The wiring connections specific to the cable coming from the optional Oil
Moisture/Temperature probe are shown below.
3) Terminate any additional wiring (alarm/service relays, 4-20mA inputs/outputs) per the
diagram below, which is also located on the inside of the TM1 cover.
Figure 12: Connection Details
CommGND
CTS/RXB
RX/RXA
RTS/TXB
TX/TXA
OutGND
(2) -
(2) +
(1) -
(1) +
(0) -
(0) +
DCD
DTR
FrameGND
J21
1
15
4-20
Outputs
FrameGND
IN GND
(1) RTN
(1) IN
(1) PWR
(0) RTN
(0) IN
(0) PWR
J22
1
8
4-20
Inputs
J4 17
COM
NC
NO
COM
NC
NO
FrameGND
SRVPWR
J3 110
COM (0)
NC (0)
NO(0)
COM (1)
NC (1)
NO(1)
COM (2)
NC (2)
NO(2)
FrameGND
PRGM
F1
F2
1A, 250VAC, 3AG(T)
Earth GND
L2
L1 1
3
InputVoltage
100-240 VAC50/60Hz
Jumper Settings
3-4 232
2-3 485-Full
1-2 485-Half
J6
1
4
PRGM
Interface
USB A
Mini B
Comms
Interface
SerialConfiguration
InputVoltage
TerminalConnectionnot
locatedon this board
E+E 364 MIO Probe
GND (PINK) Pin 7
CH2 (GRY) Pin 5
CH1 (YEL) Pin 2
+24V (RED) Pin 1

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RS485 / RS232 Wiring
Connections for RS485 / 232 serial communications are terminated on J21, as indicated below.
The jumper on J6 must be positioned properly, depending on the type of serial communications desired
Figure 13: J6 Jumper setting

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4-20mA Output Wiring
4-20 Output AUX Channel Cover Label
Reference Config Manual Reference
H2 PPM 3 CH0 CH1
H2 ROC 4 CH1 CH2
Moisture PPM 5 CH2 CH3
Table 4: 4-20mA Outputs
NOTE: The 4-20mA outputs require a 24VDC power source for their operation, which is not supplied
by the TM1, unless the optional 24V 4-20mA Output PS Module (900-0184-00) is purchased.
Figure 14: 4-20mA Output Wiring
Once the wiring is completed, the 4-20mA outputs must be configured in the TM1 monitor, using the TM1
Configuration Utility, which is included on the supplied USB flash drive. For instructions on the use of the Utility,
refer to the TM1 Configuration Utility User Manual in the Help menu within the software.

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Relays
There are five dry-contact relays which can be wired for normally-open (NO) or normally-closed (NC)
configuration. The relays are defined as follows:
PRGM-0 H2 ppm alarm
PRGM-1 H2 ROC alarm
PRGM-2 Moisture ppm alarm
SVC Service Events
PWR Loss of Power
NOTE: The relay contact ratings for resistive loads are:
Max switched Power 100W or 600VA
Max switched Current 3A
Max switched Voltage 150VDC or 300VAC

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Bleeding Air from the Monitor
1) Open the transformer valve fully and inspect for any oil
leaks. Power-on the TM1 with the black toggle switch. Using
a 3/32” Allen key, remove the two cap screws located on the
top of the bleed selector on either side of the screw in the
center as shown (Fig 15).
Figure 15: Bleed Selector Screws
2) Rotate the bleed selector clockwise to position 2,
exposing the Luer fitting. Unscrew the white cap from
Luer fitting (Fig 16). Connect the supplied Tygon tube to
the supplied syringe. Secure the other connector on the
end of the tube onto the Luer fitting (Fig 17). Return the
bleed selector to position 1.
Figure 16: Luer Fitting Cap
3) Draw the syringe plunger back to remove air and draw
bubble-free oil into it. Rotate the bleed selector clockwise
and repeat for the other two positions, pulling air and then
oil out of each port. Remove the syringe from the Luer
fitting, replace the Luer cap and rotate the bleed selector
counter-clockwise to the Run position (Fig 15).
Figure 17: Syringe Attachment
4) Reinstall the two cap screws that were removed previously. Make sure that the screws are securely
tightened and that the center screw is tight.
5) Replace the monitor cover and secure the four thumb-screws (or socket-head screws).
6) The TM1 installation is now complete. Please refer to the TM1 Operation & Maintenance Guide
(810-1928-01) for further instruction on these topics.
Luer Cap in position 2
Remove Screws (2X)

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Monitor Configuration and Dimensions
Monitor Configuration
The TM1 can be configured with the TM Configuration Utility Tool pre-loaded on the USB flash drive
included with the monitor’s accessories. To get started, refer to the User’s guide, which can be found
under the Help tab.
Shipping Dimensions
TM1 Monitor and Accessories:
Shipping Weight: 15lbs (6.8 kgs)
Shipping Dimensions: 15 in L x 15 in W x 12 in H (38.1 cm L x 38.1 cm W x 30.5 cm H)
TM1 Monitor and Accessories w/ Moisture Option
Shipping Weight: 20lbs (9.1 kgs)
Shipping Dimensions: 18 in L x 15 in W x 16 in H (45.7 cm L x 38.1 cm W x 40.6 cm H)

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Monitor Dimensions
Figure 18: Monitor Dimensions