Control Instruments and
Accessories for Transformers
CONTROL
MONITORING
PROTECTION
C O NTENTS
Our Company
1
Engineering, Design, Research and Development Department
2
Quality Department
2
Manufacturing Department
2
Sales Department
3
Integral Quality Management
3
Liquid Level, Pressure Vacuum and Temperature Indicators
4
Deenergized Tap Changers and Accessories
5
Liquid Level Indicators
6
Direct Mount Temperature Indicators
7
Capillary Temperature Indicators
8
Thermal Image
9
Smart Gauge System (SGS)
10
Pressure Relief Device (PRD)
11
Pressure Relief and Arc Detector (INFORMANT)
12
Resistance Temperature Detector (RTD)
13
Sudden Pressure Relay (SPR), Accumulated Gas Indicator
14
Block Connections, Flow Indicator
15
New Generation of On-Line Transformer Monitors
16
Series 1500 and 1700: Specification Table
17
Monitoring Systems Structure
18
Series 1500 and 1700: Flow Chart
19
Special Applications
19
Geomagnetic Induced Current Sensor (GICS)
20
GENERAL OFFIC ES / MANUFAC T URING
Prol. J. M. Morelos 702
Ocotepec, C.P. 62220
Cuernavaca, Morelos
México
Tel: +52 777 416 65 82
Tel: +52 777 416 65 29
E-mail: ventas@orto.mx
www.orto.mx
D IREC TO RY
General Manager
Javier Hernandez
javier.hernandez@orto.mx
President
Alan Boege
alan.boege@ orto.mx
Engineering and Quality Manager
Adrián Rivera
adrian.rivera@orto.mx
R&D Manager
Juan José Lopez
juanjose.lopez@orto.mx
Marketing Manager
Héctor Garza
hector.garza@ orto.mx
Manufacturing Manager
Adrián Juarez
adrian.juarez@orto.mx
GENERAL OFFIC ES / MANUFAC T URING
Prol. J. M. Morelos 702
Ocotepec, C.P. 62220
Cuernavaca, Morelos
México
Tel: +52 777 416 65 82
Tel: +52 777 416 65 29
E-mail: ventas@orto.mx
www.orto.mx
O UR C O MPANY
O RTO , manufacturer of
monitoring systems,
control instruments and
accessories for
transformers, began its
operation in Mexico City in
1971. Now, its Research
and Development facilities,
Manufacturing, Quality,
Engineering and Sales offices are located in Cuernavaca, state of Morelos, a city
60 km south of Mexico - City.
For more than one generation, O RTO has gained a reputation as a reliable
supplier. ORTO’s integral quality system is based upon a clear and well defined
policy, philosophy and mission. All the people in ORTO are responsible for the
quality of the products, and this quality means the long lasting satisfaction of its
customers. ORTO’s mission is to protect transformers by detecting failures, or
even anticipating them, constantly monitoring liquid temperature, liquid level and
pressure or vacuum that exists in an electrical distribution or power transformer.
To do this, O RTO has conventional instruments, monitoring devices for diverse
variables, such as temperature, current, oil level and pressure-vacuum, and its
accessories such as pressure relief valves, oil drain valves, tap changers, sight
glasses, feedthrough connections for current transformers, and other special
equipment manufactured according to customer’s requests.
1
E NGINEERING, DESIGN, RESEARC H & DEVELO PMENT DEPARTMENT
O RTO ’s Engineering Department has a permanent goal to
improve processes and products, and to design and develop
customer’s requirements for new or special instruments and
accessories. It keeps the technical information for
manufacturing up to date. Engineering is also responsible for
evaluating standards and specifications from our customers,
Official Mexican Standards, and international standards which
apply to our instruments and accessories, to verify that our
products comply with any requirement from the standards.The
Engineering group.
Engineering Department is in charge of making specifications,
drawings, and manufacturing plans with which our instruments
are manufactured.The area of research and development
carries out the design of new products including development
activities in the fields of electronics and software.
Q UALITY DEPARTMENT
The Quality Assurance Control team is responsible for
planning and executing techniques and activities so that
R & D Team.
ORTO’s manufacturing systems, as well as their suppliers’, meet
the quality standards specified in its Quality System.W hen the
manufacturing process is finished, Quality Control makes a
Quality Certificate of the product.This certificate guarantees
the customer that the instrument or accessory has been
manufactured according to the applicable standards, as ISO
9001:2008 and its Mexican equivalent
NMX -CC-9001-IMNC-2008.
MANUFAC TURING
DEPARTMENT
Manufacturing department.
The manufacturing processes in ORTO are desinged so that
quality is controlled from the receiving of raw material to the
packaging and shipment of the final product. All these
processes are strictly regulated from the manufacturing of
pieces and components to the final assembly of the product, by
the manufacturing plans.These plans are based on modern
systems of continuous improvement, ISO 9001:2008, and the
experience of more than one generation in manufacturing.
APG Process.
2
S ALES DEPARTMENT
The Technical Sales Department seeks to satisfy all of ORTO’s customers’ requests and needs through a constant and close
communication with the Engineering and Manufacturing Departments.We have a large customer base, and our customers are
located in México, U.S.A., Canada, France, Belgium, Colombia, Ecuador, Paraguay, Chile, Peru,Argentina, Dominican Republic,
Guatemala, Nicaragua, Phillipines, Singapore, Indonesia and Korea. For any technical question, do not hesitate to contact us!
C ANADA
EUROPE
U.S.A.
C ENT RAL AMERIC A
ASIA
SOUT H AMERIC A
Sales department.
INTEGRAL Q UALITY MANAGEMENT
Orto de México relies on an
This supports and strengthens our
Integral Quality Management which
strategic business approach, our
integrates four dimensions:
results and the care for our
customers.
REC O GNITIO NS
National Technology
Recognition
C ERTIFIC ATES
Quality Management
System ISO 9001:2008
Environmental Management
System ISO 14001:2015
C ertificate of C lean
Industry
Ethic and Values in the
Industry
Innovation and
C ompetitivity
Recognition
State of Nuevo León
Safe Industry
C ertificate
All Inclusive
C ertificate for Exportation
Personnel C ertificate
“ Yacatecuhtli”
Social Responsibility
C ertificate
Innovation and
C ompetitivity
Recognition
State of Morelos
3
L IQ UID LEVEL INDIC ATO RS
for distribution transformers
The liquid level indicators for distribution transformers are
designed to measure the liquid level inside the tank.The gauge
is weatherproof, and it can be used in extreme climates which
may vary from -50 to 80 °C. It does not require maintenance.
Liquid Level Indicators.
PRESSURE VAC UUM INDIC ATO R
for distribution transformers
This instrument is used to measure pressure or vacuum for
sealed tank distribution and power transformers. If required, it
can be provided with vacuum or pressure micro switches for
control.
The materials of this instrument allow indoor or outdoor use,
and it does not require any maintenance. All internal
components are made with corrosion resistance materials.
These instruments have a scale ranging from
-100 to +100 kPa (-12 to 12 psi).The accuracy is 3% full scale.
T EMPERATURE INDIC ATO RS
Pressure Vacuum Indicators.
for distribution transformers
The temperature indicators for distribution transformers are
designed to measure the liquid temperature of the transformer.
These indicators are available with different dial ranges:
Liquid Temperature (0 to 120 ºC)
Liquid Temperature (0 to 160 ºC)
Dial texts can be in English, Spanish or Bilingual.
Under request, other languages can be provided.
4
Temperature Indicators.
D EENERGIZ ED TAP C HANGERS
for distribution transformers
The externally operated single phase or three phase tap changers are
designed for distribution transformers from 15 kV to 34.5 kV, and
with current rates of 100 A, 120 A or 150 A, maximum continuous
current. Its terminal studs are made of copper tinned.The copper
wire from the coils can be crimped, soldered or screwed on to the
studs.The components of the tap changers are compatible with
transformer oil, and have proper contact resistance.The body, shaft,
Distribution.
nut, nameplate and dust-knob cap are made of a thermoplastic
material with high strength, weathers-resistant, UV grade and
reinforced with fiberglass.The tap changers are available in several
deck-configurations for maximum versatility.
D EENERGIZ ED TAP C HANGERS
for small and medium power transformers
The externally operated three phase tap changer for small and
medium power transformers are designed to change the taps of the
high voltage coil of the transformer. It can be used in 15, 25 and 34.5
kV voltage class and maximum continuous current of 150 amperes.
Small and Medium Power.
The support and shaft are made of a fiberglass reinforced material.
The bases are made with polyester reinforced with fiberglass and
copper or brass tined terminals.
D EENERGIZ ED TAP C HANGERS
for power transformers
Other models for deenergized tap changers with 115 kV voltage
class, 650 kV BIL and 250 A are available for power transformers.
Power.
A C C ESSO RIES
for distribution transformers
Different accessories, such as pressure relief valves, draining valves
and sight glasses are available. Grounding connectors for distribution
and power transformers are also available.
Accessories.
5
L IQ UID LEVEL INDIC ATO RS
for medium and high power transformers
The liquid level indicators with micro switches for control
are designed to measure the liquid level inside the
transformer tank.The indicators include the necessary
control and alarm circuits for a safe and efficient transformer
operation.The instrument is weatherproof, and it can be
used in extreme climates, which may vary from artic to
tropical. It requires no maintenance. Under request, special
Flying Leads.
paint for marine and corrosive environments can be
provided.
MICRO SWITCHES:
From factory, the indicator has a micro switch adjusted to
operate at minimum (MIN) level. Under customer request,
two more micro switches can be added to operate at
maximum (MAX ) or minimum (MIN) liquid levels. Activation
Axial Type
of the micro switches occurs when the liquid reaches its
highest or lowest specified level.
LIQUID LEVEL TYPES:
The liquid level indicators can be manufactured with a radial
or axial float, depending on the customer requirements.Two
options for the center bolt are available (3.125” or 4”).
Radial Type
SC ADA O UTPUT:
For the SCADA models, electronic circuits are added to
convert the liquid level value into a 4-20 mA output analog
signal.
LANGUAGE:
Dial texts can be in English, Spanish or Bilingual. Under
request, other languages can be provided.
Scada Output.
6
D IREC T MO UNT TEMPERATURE INDIC ATO RS
for medium power and power transformers
The bimetal temperature indicators are designed to measure
the liquid or winding temperature of the transformer.They
include the control, alarm and trip micro switches necessary
for secure and efficient transformer operation. Under request,
LiquidTemperature.
special paint for marine and corrosive environments can be
provided.
SC ALE:
The bimetal temperature indicators are available with
different dial ranges:
0-120 °C
0-160 °C
to measure liquid or winding temperature
0-180 °C
Scale in °F can be provided under request.
MICRO SWITCHES:
WindingTemperature.
The micro switches activate when the set alarm temperatures
are reached.The instrument can be specified with 1, 2, 3 or 4
micro switches.
SC ADA O UTPUT:
For the SCADA models, electronic circuits are added to
convert the temperature value into a commutable 4-20 / 0-1
Scada Output.
mA analog output, or RTD output.These instruments are
manufactured to operate in any environment and guarantees
accuracy and repeatability within +/- 2% full scale.
LANGUAGE:
Dial texts can be in English, Spanish or Bilingual.
Under request, other languages can be provided.
7
C APILLARY TEMPERATURE INDIC ATO RS
for medium and high power transformers
The remote temperature indicators with capillary tube are
designed to measure the liquid or winding temperature of the
transformer.They include the control, alarm and trip micro
switches necessary for secure and efficient transformer
operation. Under request, special paint for marine and
corrosive environments can be provided.
WindingTemperature.
SC ALE:
The capillary temperature indicators are available with
different dial ranges:
0-120 °C
0-160 °C
to measure liquid or winding temperature
Scada Output.
0-180 °C
Scale in °F can be provided under request.
MICRO SWITCHES:
The micro switches activate when the set alarm temperatures
are reached.The instrument can be specified with 1, 2, 3, 4 or
5 micro switches.
C APILLARY LENGTH:
The length of the stainless-steel armored capillary tube can be
3,658 mm (144”) or 8,000 mm (314”).
SC ADA O UTPUT:
For the SCADA models, electronic circuits are added to
convert the temperature value into a commutable 4-20 mA or
0-1 mA analog output.These instruments are manufactured to
operate in any environment and guarantees accuracy and
repeatability within +/- 2% full scale.
LANGUAGE:
Dial texts can be in English, Spanish or Bilingual.
Under request, other languages can be provided.
8
LiquidTemperature.
T HERMAL IMAGE
for industrial, medium and high power transformers
C O NNEC TIO N DIAGRAM
C alibration Resistanc e
25 Watts (1,2,3,5 Ω)
The thermal Image is normally used in
combination with the winding
temperature indicator in the majorities
of liquid-filled Power transformers. It
simulates the winding temperature
using a heating resistance connected to
Heater Resistanc e
A
One thermowell with
feedthough cables.
the secondary of the transformer CT, as
B
shown in the connection diagram.
C urrent input 0-5 Amp
between A and B
The temperature gradient over liquid temperature, obtained in
the thermal image, is proportional to the applied TC secondary
One thermowell standard.
current, according to the following figure:
Temperature Gradient over Top O il
70° C
60° C
50° C
O il Temp. 25° C
40° C
Two thermowells.
30° C
20° C
10° C
O il Temp. 100° C
0° C
0
1
2
3
4
5
6
Current in heater element
7 Amp
Three thermowells.
THERMOWELL O PTIO NS:
One thermowell for winding temperature ( with or without
feedthrough cables).
Two or three thermowells with any combination of liquid and
winding temperature.
C ALIBRATIO N O PTIO NS:
Calibration resistance mounted inside the thermal image or
mounted in the control cabinet of the transformer (1Ω
suggested resistance).
Balancing transformer for current calibration.
Balancing transformer.
Calibration resistance.
9
S MART GAUGE SYSTEM (SGS)
The Smart Gauge System provides a cost-effective method for the temperature monitoring of liquid-filled transformers. For this
case, typically, two gauges are needed: one to measure liquid temperature and other one to measure winding temperature.The
Smart Gauge System is a two-in-one instrument that displays both temperatures in the same dial. Instead of a digital display, it
uses the traditional gauge type display which customers are used to, and facilitates readings under sunlight conditions.The sensor
is mounted directly in a thermowell and there is no need to use the thermal image.
Liquid temperature is measured through an RTD. Instead of the standard thermal image used to simulate the winding
temperature, it includes an external split core CT to measure the load current, and calculate the winding temperature.The
mathematical model also calculates the loss of life of the transformer.
Maximum temperatures are stored in a nonvolatile memory and displayed in the gauge dial when needed.
It includes 5 Relays of 6A / 250 VAC , to activate the cooling stages and provide alarm and trip functions.These relays can be
configured in fail safe mode to activate the cooling system of the transformer in case of power loss or damage of the device.Two
communication protocols are available in this instrument: DNP3.0 and Modbus. Devices installed in different transformers in the
same substation can interconnect in a daisy chain configuration, thus permitting simultaneous monitoring of several transformers.
Frontal View
MAIN FEATURES SGS
APPLIC ATIO N
O n-line tempera ture
10
USE
O utdoor
MEASURED/C ALC ULATED VARIABLES
RELAY O UTPUTS
DISPLAY
C O MMUNIC ATIO N
1 RTD liquid tempera ture sensor
5 Solid Sta te Rela ys
Ga uge type
Seria l Fiber O ptic, RS-485
monitor for power
1 Split core C T loa d current sensor
(6A/250 VAC )
displa y for liquid
a nd USB ports
tra nsformers
2 ca lcula ted va ria bles: Winding tempera ture
a nd winding
DNP3.0 a nd Modbus Protocol
& Loss of life
tempera ture
PRESSURE RELIEF DEVIC E (PRD)
for industrial, medium and high power transformers
The pressure relief device is used to release the pressure
generated inside a transformer in the event of an internal
short circuit. Pressure release is complemented with the
operation of an electrical contact that sends the trip signal
to the breaker, thus preventing the occurrence of major
damage (explosion of the tank and fire).The materials used
in the PRD guarantee a high resistance to the UV rays and
corrosive environments.
O RDERING O PTIO NS:
From 4 up to 20 psi operating pressure (± 1 psi), according
to customer specifications.
Standard PRD.
From 1 to 4 simultaneously operating switches SPDT, 15 A ,
125/250 VAC .
Special switches for 10 A, 125 VDC.
Sealed box and female connector with 8 pins (standard), 9
pins ANSI style or terminal box NEMA 4/6, IP 56/68, with
gland connector PG-16.
W ith or without flag for long distance view of device
operation.
Sealed female plug with cable SOOW, female plug with
½”-14 NPS thread (for conduit tube) or flying leads.
Small PRD.
Viton gasket and O ring (-29 to 204 °C) or low
temperature Neoprene gasket and O ring (-54 to 149 °C).
Painted stainless steel springs.
Zinc plated and painted cover (standard), hot dipped
galvanized and painted cover or stainless steel painted
cover.
W ith or without mounting gasket.
MO DELS:
Three different models of PRD’s are available:
STANDARD
SMALL
MO UNTING
DIAMETER
235 mm
(9.25”)
125 mm
(4.921”)
TOTAL
DIAMETER
265 mm
(10.433”)
164 mm
(6.456”)
DIREC TED FLO W
235 mm
(9.25”)
324 mm
(12.76”)
Directed Flow PRD.
11
PRESSURE RELIEF AND ARC
DETEC TO R (INFO RMANT)
DEVICE CHARACTERISTICS
The main function of the pressure relief and arc detector (INFORMANT) is to trigger a flag when arcing is occuring inside the
tranformer tank.The flag announces that a transformer fault has occurred and that should not be reenergized, since there is a risk
of explosion and fire.The device is sensitive enough to detect pressure increase due to internal low energy arcing (partial
discharges) or high energy arcs due to short circuits between phases or between phase and ground.
This INFORMANT will never activate the flag during transformer testing or during transport or installation. It includes a pressure
valve to release the internal pressure of the tank manually or automatically.
TESTING
The INFORMANT works with a bellow mechanism resistant to vibration and tempertures ranging from -20 to 120 °C. Each
device is individually tested with five consecutive tests at three different pressure rates (1.5, 5.0 and 14.0 psi/sec). The
INFORMANT can be used in pole mounted and pad mounted distribution transformers.
INSTALATIO N
The INFORMANT is installed outside the transformer, so there is no need to modify its internal design. Cost increase due to
replacement of bushings or modification of the tank dimensions will not be needed. It is installed in the airspace above the
maximum operating oil level.To mount the INFORMANT simply screw it to the tank.
The installation of the device in existing transformers can be done in the field, using the same tank hole of the standard pressure
valve.This allows an easy retrofit for transformers in service.
MAINTENANCE
The INFORMANT is maintenance-free and does not require any field calibration or configuration.
12
RESISTANC E TEMPERATURE DETEC TO R (RTD)
for industrial, medium and high power transformers
Ambient temperature.
The resistance temperature detector (RTD) is used to
measure the liquid or winding temperature of a transformer
or to measure ambient temperature, depending on the
device mounting.The device includes a passive element
which converts the temperature value to a resistance value
proportional to temperature.The RTD´s have a high
exactitude and repeatability and are manufactured
Winding temperature
thermowell.
weatherproof for use in extreme climates, which can vary
from artic to tropic.
RTD 4-20 / 0-1 mA output.
APPLIC ATIO NS:
•Liquid temperature when mounted in a thermowell.
•W inding temperature when mounted in a thermal image.
•Ambient temperature when mounted with an ambient
RTD resistance
output.
protector.
O UTPUT O PTIO NS:
Liquid temperature
thermowell.
•Platinum 100 Ω (Pt100) resistance output
•Copper 10 Ω (Cu10) resistance output
•Analog output 4-20 mA or 0-1 mA
C URRENT TRANSFO RMER
The current transformer provides a 4-20 mA output, which is
proportional to the RMS value of the incoming alternating
current.The controlled output current is not affected by
variations in the supply voltage or by the burden (within
Current transformer.
specified limits). Standard scales are 5, 10, 30 and 50 A with an
accuracy is ± 0.5 % on the whole scale.
PRESSURE SENSO R
The pressure sensor provides a 4-20 mA output, which is
proportional to the pressure inside the transformer tank.
Standard scale is 0 to 15 psi. Other scales are available under
request.
Pressure sensor.
13
S UDDEN PRESSURE RELAY (SPR)
for medium and high power transformers
UR rec ognized by UL
The sudden pressure relay is an instrument designed for
Seal-in relay.
responding to a sudden increase of pressure, usually generated by
an internal fault of the transformer. It reacts quickly and has a
micro switch that can be connected to the breaker trip, to reduce
damage in the transformer tank.
MECHANIC AL SPR
The mechanical rapid pressure relay is used in combination with a
seal-in relay to maintain the alarm and trip circuits active, when
the momentary contact of the SPR operates.This condition
remains until the reset button of the seal-in relay is pressed to
return the device to its initial condition.A red LED located in the
upper right part of the device lights on, while the seal-in relay is in
the alarm or trip condition.
Mechanical SPR.
ELECTRO NIC SPR
This device also responds to slow pressure rise and includes a
SC ADA switchable output (0-1 mA or 4-20 mA) for the remote
monitoring of the transformer tank pressure. It also includes an
additional relay that is activated by a certain pressure level
adjustable by the user. It is composed of two main parts: a
pressure sensor and a control panel.
Electronic SPR.
A C C UMULATED GAS INDIC ATO R
for medium and high power transformers
The accumulated gas indicator with micro switch and SC ADA
output is designed to measure the volume of gas that has been
exchanged between the instrument casing and the inside of the
transformer.The presence of gas indicates the possibility of a
failure.
The gas volume scale is from 0 to 450 cm3 and the micro
switch is adjusted to produce an alarm at a value of 200 cm3.
14
Accumulated Gas Indicator.
BLO C K C O NNEC TIO NS
for medium and high power transformers
The block connection is a transformer accessory
used to connect the internal electrical devices of the
transformer with the external control system. It is
weather proof and requires no maintenance.
The block connection is manufactured with an
epoxy resin for temperature range from -20°C to
100°C .W ith an APG process, the temperature range
increases (-55°C to +155° C ).
The block connection has a numeric identification
for every stud or terminal on each side of the
product.
This accessory is manufactured in different models
Block Connections.
depending on the number of studs, to satisfy our
customer requirements.
F LO W INDIC ATO R
for medium and high power transformers
This instrument is designed to indicate if the liquid
is flowing in the pump tubing. One micro switch
for control is included in all models.
The instrument vane can be adjusted according to
the flow direction.
The vane size can be designed for different tube
diameters from 1.5” to 8”.
Flow Indicator.
15
N EW GENERATIO N O F O N- LINE
TRANSFO RMER MO NITO RS
SERIES 1500 AND 1700
The series 1500 and 1700 Electronic Monitors are feasibly-priced devices, designed for
monitoring distribution, power, dry-type and wind farm transformers.The monitors
optionally include 6 A, 250 V relays that are programmable by the user and may be
configured for automatic fan control, alarm activation, or to automatically trip the
transformer off line. Contact status (open or closed) is indicated by LEDs located in
the front panel. All models include one USB and one RS-485 port for remote
communication with a master station, using DNP 3.0 or Modbus protocols.The rail
mount modular design allows a serial port daisy-chain arrangement to interconnect
several modules, thus increasing the number of input and output signals of the system
to satisfy end-user requirements.
S IGNAL C O NVERTER
for power and distribution transformers
SERIES 1501
The series 1501 signal converter is a feasibly-priced device, designed for monitoring
liquid-filled transformers. It is capable of processing up to 12 analog inputs of 4-20 or 0-1
mA. The device’s function is as a signal converter that measures and digitizes analog
Series 1501
values, and forwards them to a remote terminal. For this reason, it is not equipped with
display and control relays. It includes 2 communication ports (USB and RS-485) which
transmit data to a master station (not included), through Modbus or DNP 3.0 protocols.
SML 1701
The din-rail mount design facilitates the interconnection of multiple converters in a daisy
chain configuration, thus permitting simultaneous monitoring of several transformers.
O N- LINE DRY-TYPE TRANSFO RMER MO NITO R
SERIES 1701
The series 1701 Monitor is a feasibly-priced device, designed for temperature
Series 1701 panel mount.
monitoring and control in dry type transformers. It includes 3 RTD (Pt100 type) inputs
for monitoring the temperature of the three coils and an additional RTD to monitor
the ambient temperature.The 4-digit display is easy to read even in high luminosity
conditions.The monitor is equipped with 6 relay outputs configurable by the user,
providing for cooling control and for alarm and trip functions.This model includes 2
communication ports (USB and RS-485 which transmit data to a master station (not
included), through Modbus or DNP 3.0 protocols.The din-rail mount design of the
equipment makes possible the interconnection of multiple monitors in a daisy chain,
thus permitting the monitoring of several transformers concurrently.
16
Series 1701 din-rail mount.
S PEC IFIC ATIO N
MO DEL
1 501
TABLE SERIES 1 500 AND 1 700
APPLIC ATIO N
USE
O n-line monitoring
Indoor
for distribution a nd
a nd
power tra nsformers
O utdoor
INPUTS
12 sensor inputs
RELAY O UTPUTS
Not a va ila ble
DISPLAY
Not a va ila ble
C O MMUNIC ATIO NS
Seria l RS-485 a nd USB ports
per module
(4-20 mA
DNP3.0 a nd
or 0-1 mA),
Modbus Protocol
expa nda ble in
multiples of 12
See selec tion guide
(*)
1 701
1 702
Tempera ture
4 RTD (type pt100)
6 progra mma ble
C oil tempera ture in
mea surement a nd
inputs for
rela ys (6 A, 250 V),
pha se A, pha se B,
control for dry-type
tempera ture
for cooling control,
pha se C a nd
DNP3.0 a nd
tra nsformers
mea surement of
a la rm a nd trip
a mbient tempera ture
Modbus Protocol
coils a nd a mbient
functions
Seria l RS-485 a nd USB ports
Indoor
Efficiency ca lcula tion
Seria l RS-485 a nd USB ports
Indoor
3 volta ge inputs
1 progra mma ble
Efficiency a nd core
for distribution a nd
a nd
(240V), 3 current
rela y (6 A, 250 V),
tempera ture
power tra nsformers
O utdoor
inputs (5A) a nd 1
for high core
DNP3.0 a nd
RTD (type pt100)
tempera ture a la rm
Modbus Protocol
input for core
tempera ture
mea surement
1 703
O n-line monitoring
1 RTD (type pt100)
6 progra mma ble
O il tempera ture,
for wind fa rm
input for oil
rela y (6 A, 250 V),
Liquid level a nd ta nk
tra nsformers
tempera ture,
for a la rm a nd trip
pressure
1 liquid level sensor
functions
Indoor
Seria l RS-485 a nd USB ports
DNP3.0 a nd
Modbus Protocol
input a nd
1 pressure sensor
input
1 704
O n-line monitoring
Indoor
for distribution a nd
a nd
power tra nsformers
O utdoor
4 sensor inputs per
module (4-20 mA
See selec tion guide
(*)
Depending on
Seria l RS-485 a nd USB ports
selected sensors
or 0-1 mA),
DNP3.0 a nd
expa nda ble in
Modbus Protocol
multiples of 4
See selec tion guide
(*)
(*) Sensor and relay selec tion guide:
Top Oil Temperature
Bottom Oil Temperature
Vibrations
Bushing Leakage Current
LTC Position
LTC Oil Temperature
Liquid Level
Tank Pressure
Dissolved Gas
Moisture in Oil
Fan or Pump Current Stage 1
Fan or Pump Current Stage 2
Fan or Pump Current Stage 3
Load Current Phase A
Load Current Phase B
Load Current Phase C
WindingTemperature Phase A
WindingTemperature Phase B
WindingTemperature Phase C
17
MO NITO RING
SYSTEMS STRUC TURE
TRANSFO RMER
DIAGNO STICS
The structure of the Monitoring Systems focusses on four main
areas: Hardware, Software, Communications and Q ualified Staff,
which depend from each other and overlap themselves.
TRANSFO RMER
HARDWARE
HARDWARE
C OMMUNICATIONS
SO FTWARE
Protoc ols:
Modbus
TC P/IP
DNP 3.0
Therma l a na lysis
Bushing a na lysis
Liquid level
LTC a na lysis
O thers
Sensors:
Winding temp.
Liquid temp.
Line current
Liquid level
O thers
Fiber optic s
Radio
DIAGNO STIC S
SO FTWARE
MO DEL
REQ UIRED SENSO RS
THERMAL ANALYSIS
(based on IEEE and IEC spec s.)
Ports:
RS-232
RS-485
Ethernet
Shielded c able
Q UALIFIED STAFF
GSM Satellite
PREVENTIO N, PROTEC TIO N AND C O NTRO L FUNC TIO NS
Ambient tempera ture
C ooling control
Unba la nced current a la rm
O il tempera ture
C ooling fa ilure a la rm
Loss of life
Winding tempera ture
High oil or winding tempera ture a la rm
Hottest spot tempera ture
Line current
O verloa d a la rm
C ooling system current
LTC ANALYSIS
LIQ UID LEVEL
Ma in ta nk oil tempera ture
Tempera ture differentia l a la rm
LTC tempera ture
C onta ct wea r
Ma in ta nk
Low level a la rm
LTC ta nk
OTHERS
O THERS
STATISTIC S AND FAILURE MEC HANISMS
FAILURE MEC HANISMS
REQ UIRED SENSO RS
Insula tion a ging of the tra nsformer
Winding tempera ture, liquid tempera ture, line current, a mbient tempera ture
Insula tion a ging of the bushings
Lea ka ge current in ca pa citive ta p
Loss of dielectric strength due to insufficient insula ting liquid
Liquid level
LTC conta ct wea r
Tempera ture differentia l between ma in ta nk a nd LTC ta nk
O thers
18
O THERS
O N- LINE MO NITO RING
Moisture O il
SYSTEM1 500 AND 1 700: FLO W C HART
Dissolved Gas
Sudden Pressure Relay
Liquid Level
Geomagnetic Induc ed C urrent
Load C urrent
Bushing Leakage
C urrent
Fan/Pump
C urrent
Top O il
Temp.
LTC
Temp.
Partial
Disc harges
Bottom O il
Temp.
Vibrations
SENSOR... n
SERIES 1 500/1 700
C O NTRO L RO O M
4- 20 mA
0- 1 mA
4- 20 mA
0- 1 mA
All Series 1500 and 1700 monitors can be connected
together in a Daisy Chain connection through their
RS-485 serial ports.
Serial Port RS- 232
Serial Port RS- 4 85
DNP 3.0 Protoc ol
Modbus
Modular system expandible according to the user’s
ORTO can also provide a Linux based workstation Series 1600, to store
requirements. During the service time, it can be
and analyze the data provided by the monitors. It includes aWeb Server
equipped with up to 8 options, starting with just one.
and a database to generate reports and graphs.
S PEC IAL APPLIC ATIO NS
The real time monitoring systems manufactured by O RTO are flexible and can
handle any type of sensor with an output of 4-20 mA or 0-10 Volts.That makes it
possible to monitor transformers as well as other power equipments. O RTO has
developed real time monitoring systems for a variety of applications, such as:
Real T ime Monitoring for Generators
These systems use sensors that measure the temperature at different parts of
Real Time Monitoring for Generators
the stator to detect excessive heating problems.
Real T ime Monitoring for Electrical C ircuits
These systems use sensors to measure voltage, current, power, energy, billing,
power factor and harmonic distortion for voltage and current.W ith the
combination of these sensors it is possible to detect problems such as voltages
out of the specified tolerance range, power peaks, harmonic distortion, consoles
that are out of service, as well as the verification of values such as peak demand,
consumed energy and billing.
Real Time Monitoring for Electrical Circuits
19
G EO MAGNETIC
INDUC ED C URRENT SENSO R
SO LAR EXPLO SIO NS
Solar explosions radiate
electromagnetic
interference that comes to
the Earth.
ELEC TRO MAGNETIC RADIATIO N INDUC ES AN ELEC TRIC C URRENT
GIC
GIC
Transformer
GIC
Transformer
GIC
GIC
GIC
The electromagnetic radiation from the Sun, induces an electric current (quasi DC)
in the transmission line, which passes through the coils of the transformer.
MAGNETIC FLUX IN A TRANSFO RMER
C ore
Mutual Flux
I1
C O RE SATURATIO N- HARMO NIC S
The Geomagnetic Induced Current
Sensor measures the value of the
quasi DC current circulating in the
transformer windings.The copper rod
is connected between the neutral
bushing of the transformer and the
ground connection.
TRANSFO RMER FAILURE
I2
V 2 Load
V1
Leakage Flux
The geomagnetic current flowing through
Core saturation produces harmonics
the coils of the transformer, saturates the
due to the increased demand of
The temperature increases in
core increasing the leakage flux which
excitation current.The value of reactive
metals, oil and windings, and may
heats the metal parts (coils, metal fittings,
power increases as well, and may lead to
cause accelerated aging of the
tank, etc.).
a breaker trip.
insulation and transformer failure.
20
GENERAL OFFIC ES / MANUFAC T URING
Prol. J. M. Morelos 702
Ocotepec, C.P. 62220
Cuernavaca, Morelos
México
Tel: +52 777 416 65 82
Tel: +52 777 416 65 29
E-mail: ventas@orto.mx
www.orto.mx