MuYi
Shanghai Muyi Electric Co.,Ltd
Introduction of Muyi
1
Company
overview
Quality Control
Product series
Sales reference
Partners
Service
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MuYi
Muyi
Shanghai Muyi Electric Co.,Ltd
• Established in 2006，located in Jiading district of Shanghai
• Mainly engaged in design, production, sales and service of intelligent
control and online monitoring equipment which applicable to the
transformer
• The agency of A. Eberle GmbH & Co. KG/Germany for products of
OLTC control and transformer monitoring system
• Established cooperation with many well-known manufacturers and
Company research institutions in domestics and overseas
• The local control panels and remote transformer control cabinets
supplied to Chinese transformer manufactures have been exported to
over 40 countries in America, Europe, Asia, Africa and Oceania
Overview • Professional engineering team quickly provides the design and
drawings according to the request
2
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
3
Control panel
Accessories
Agency product
• Remote transformer
control cabinet
（RTCC）
• Transformer local
control panel（LCP）
• Transformer
marshalling kiosk
• Intelligent
monitoring cabinet
• Neutral earthing
resistor
disconnector
• OLTC position
indicator
• OLTC position
transmitter
• Alarm annunciator
• Hygrostat and
thermostat
• Heater
• Protective housing
for transformer
secondary circuit
• OLTC automatic
voltage regulator
• Transformer top oil
and winding
temperature
monitoring device
• Online Dissolved
Gas Analyzer
• Transformer
accessories
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
•
The housing is made of high quality sheet steel coated
with fine painting, it is for in-door application
All electrical devices and elements are chosen from wellknown international brands
Status of the OLTC and Transformer are displayed on the
panel, various alarms can be given according to
requirements of the clients
Realize transformers operating in parallel with control
functions
Has OLTC automatic voltage regulating function
With transformer winding temperature and top oil
temperature real-time digital display
Customized all kinds of transformer operation monitoring
and control functions according to user needs
•
•
•
•
•
•
4
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
indicator
Overall dimensions ：
2200（height)×600 (width)×600（depth） Alarm
2200（height)×800 (width )×600（depth）
There doors in front and rear
It can be customized according to
requirement
5
AVR
Select switch
Push button
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
• Display
voltage on
transformer
primary or
secondary
winding
• OLTC
position
indication
Digital
Indicator
• Transformer
top oil
temperature
indication
6
• Transformer
winding
temperature
indication
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
It can be selected alarm lamp or alarm annunciator, the maximum
number of alarm window is 36 in generally
Buchholz
relay main
tank alarm
Dial type
thermometer
for winding
LV-b alarm
Dial type
thermometer
for winding
LV-c alarm
Protective
relay trip
Thermometer
for top oil trip
Dial type
thermometer
for winding
LV-c trip
7
Oil level
indicator
main tank
alarm
Standby
oil level
indicator
for OLTC
alarm
Dial type
thermometer
for top oil
alarm
Dial type
thermometer
for winding
HV-A alarm
Dial type
thermometer
for winding
HV-B alarm
Dial type
thermometer
for winding
HV-C alarm
Dial type
thermometer
for winding
LV-a alarm
Standby
Pressure
relief valve
main tank 1
trip
Pressure
relief valve
main tank 2
trip
Buchholz
relay main
tank trip
protective
relay for
OLTC trip
Rapid
pressure
rise relay
trip
Dial type
Dial type
thermometer thermometer
for winding
for winding
HV-A trip
HV-B trip
Dial type
thermometer
for winding
HV-C trip
Dial type
thermometer
for winding
LV-a trip
Dial type
thermometer
for winding
LV-b trip
Fan group
2 power
fault
Main power
2 running
Fan group
1 running
Fan group
2 running
Flow
shutting
valve trip
Fan group
1 power
fault
Main power
1 running
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
Basic function:
l Automatic voltage regulating and control for on-load tap changer
l Large backlit LCD with all important information (tap-change position,
voltage, etc.)
l Measuring functions (U, I, P, Q, S, cos ϕ, ϕ, I sin ϕ, f )
l Recorder functions (2-channel chart recorder)
l Statistics function (records total number of switching operations,
switching operations per tap)
REG-DA & REG-D
l Event recorder (log book), such as transformer monitoring functions incl. recording of the hot-spot
temperature and lifetime consumption
l Programmable binary inputs and outputs, and analogue inputs or outputs (mA)
l The current and voltage ratings programmed
l Realize transformer parallel operation up to 10 units
l Serial and Ethernet SCADA protocols supported: IEC 61850, IEC 60870-5-103,
IEC 60870-5-101,DNP3:00, LONMark, SPABUS, MODBUS RTU
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
Select switch and push button
Select switch:
OLTC: local/remote
Parallel operation:
master/follower /independent /off
manual /auto
push button:
OLTC: raise /lower/stop
fan group start
fan group stop
9
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
view of cabinet inner wiring
10
RTCC with transparent double door
and control of 3 units of singlephase transformer
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Remote Transformer Control Cabinet（RTCC）
♦ BCD position signal output
♦ one-to-one corresponding
position signal output
RTCC required the
signals from OLTC
♦ tap changing in progress output
signal N/O
♦ raise or lower signal N/O
♦ limit position signal output N/O
♦ tap changing incomplete signal
output N/O
♦ power failure signal output N/O
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Transformer Local Control Panel (LCP)
l Housing is made of high quality stainless steel, it has
beautiful appearance, corrosion and rust proof
l All electrical components are selected well-known
international brands and have reliable quality
l With main backup power switching circuit in distributed
arrangement, to ensure the cooling system operation
effectively
l Switching cooler automatically according to transformer
top oil temperature changes
l Switching cooler automatically according to transformer
loads
l With manual / automatic / remote control mode
l PLC（programmable logic controller） or solid state
relay fan control cabinet is as optional.
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Transformer Local Control Panel (LCP)
Technical spec. required from
transformer producer
Protective degree,
material, overall
dimensions and
mounting request
Number of fan
group
Power and current
of fan and oil
pump, voltage of
control circuit
13
Painting color
Transformer wiring
terminal arrangement
(when LCP includes
marshalling kiosk function)
Required devices on LCP
panel and power
feedequipment
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Transformer Local Control Panel (LCP)
remote alarm signal and operation
status signal output
Alarm
signal
Status
signal
Main power supply fail
Backup power supply fail
Control circuit fail
Heating circuit fail
Fan fail
14
Fan running
Fan stop
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Transformer Local Control Panel (LCP)
Additional signals required
when LCP includes function of
fan control and marshalling
kiosk
Alarm
signal
Buchholz relay main tank
alarm
Oil level indicator main
tank alarm
Oil level indicator OLTC
alarm
Dial type thermometer for
winding alarm
Dial type thermometer for
top oil alarm
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Trip
signal
Rapid pressure rise relay main
tank trip
Pressure relief valve main tank
trip
Buchholz relay main tank trip
Protective relay for OLTC trip
Winding temperature high trip
Top oil temperature high trip
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Transformer Marshalling Kiosk
Ø Housing is made of high quality stainless
steel, it has beautiful appearance,
corrosion and rust proof
Ø All electrical components are selected
well-known international brands and
have reliable quality
Ø Using special sealing structure for
outdoor application to ensure good
sealing performance
Ø Heater, Thermostat and Humidistat as
well as fan is optional, to prevent
moisture or condensation inside the
cabinet
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Transformer Marshalling Kiosk
Technical spec. required from
transformer producer
Protective degree, material, overall
dimensions and mounting request as
well as painting color
Transformer wiring terminal
arrangement
Power spec, special equipment and
electric elements required
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Transformer Marshalling Kiosk
Alarm
signal
Buchholz relay main tank
alarm
Oil level indicator main
tank alarm
Oil level indicator OLTC
alarm
Dial type thermometer for
winding alarm
Dial type thermometer for
top oil alarm
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Remote alarm and trip
signal output
Trip
signal
Rapid pressure rise relay main
tank trip
Pressure relief valve main tank
trip
Buchholz relay main tank trip
Protective relay for OLTC trip
Winding temperature high trip
Top oil temperature high trip
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Accessories for RTCC and LCP
Type MY-C100 OLTC position transmitter
u Binary coded decimal（BCD）
position signal input
u Binary coded decimal（BCD）
position signal output
u 4~20mA analog signal output
u 0~5V analog signal output
u Resistance position signal output
Type LT100 OLTC position indicator
n Use 8-segment LED display
n Decimal and BCD position input
n Binary coded decimal（BCD）
position signal output
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Accessories for RTCC and LCP
l Alarm indication window can be selected by
number 16,26 and 36 inputs according to
request.
l Each alarm indication lamp can be set
normal light up or flash.
l Working status and parameter can be
displayed on LCD front panel.
l With RS485 communication interface and
Modbus protocol for remote control.
l There are push buttons of test, set, reset and
acknowledge.
20
MYAU Alarm Annunciator Unit
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Accessories for RTCC and LCP
Heater
WSKZ-TH Thermostat and Hygrostat
Ø Small volume and easy for
installation
Ø Reliable operation with life time
Ø Real time temperature and
humidity display
Ø Has working status indication
lamp
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p Heating wire is made of High quality
nickel chromium alloy, use silicon
rubber heating plate and aluminum
heating plate.
p Small volume and good appearance
p Large surface area to have uniform
heat dissipation
p Long life time
p With protective housing
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
Transformer control
and monitoring
system schematic
overview
22
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
The voltage regulation system REGSys™ has
been designed to regulate, control and monitor
power transformers with on-load tap changer
(OLTC) in medium and high voltage grids.
REGSysTM Transformer control and monitoring system
A variety of freely programmable inputs
and outputs, LEDs and intelligent
features ， recorder and logbook,
transducer, statistics, parallel operation
with ParaGramer function, transformer
monitoring and a powerful programming
language make the voltage regulation
system very convenient.
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSysTM Transformer control and monitoring system
Recorder
REG-D(A) and PAN-D
u The default recording function allows the recording up to three measuring values (e.g. voltage,
current, angle, oil temperature or winding temperature) and to display them in form of a Y-t
diagram.
u With the recording control voltage, tap position, set point, tolerance band and manual/auto state
are included in the registration in a time correlated manner.
u In case of an event the analysis of all data can be done directly on the regulator or via the PC.
The fault can then be analyzed using the history data too.
u In addition, the REG-D™ can be equipped with feature S2. An extended recorder function with a
total number of 256 channels is then available. A time resolution up to one second makes this
version ideal for use in the transformer monitoring environment.
u The data is archived and visualized with the REGView add-on software which can be integrated
into the standard WinREG operating software.
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSysTM Transformer control and monitoring system
Logbook
REG-D(A) and PAN-D
u All events essential for the clarification of fault situations are registered here. The last
512 events are stored chronologically with time and date according to FIFO principle.
Statistics
REG-D(A)
u When assessing regulation knowing the total number of all steps per time unit is not
sufficient. Information as to which taps were switched how often under load is also
required. The statistic feature provides this information and thus acts as key
characteristic to improve the quality of the regulation.
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSysTM Transformer control and monitoring system
Transformer Monitoring Module (TMM)
REG-D(A)
u The life of a transformer depends essentially on the hot spot temperature. It
is calculated by measuring the oil temperature and current in conjunction with
key transformer characteristics according to IEC 60354 or IEC 60076.
u Using this data the Transformer Monitoring Module TMM, integrated in the
voltage regulators, determines the residual life time of the transformer
u It is additionally able to even control up to six fan groups and two oil-pumps.
The operating times of the fans and oil pumps can be recorded at the same
time. The SMART Fan Control function provides the control of the fan
(groups) by using the expected winding temperature, which increases the
power reserves of the transformer.
u The additional Overload Prediction function offers further tools for the optimal
utilization of the transformer.
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSysTM Transformer control and monitoring system
Transducer
u The transducer function of the REG-D(A) provides measured values from three phase
networks with balanced or unbalanced load. All measuring variables required to analyzing.
the measuring situation at the feeding point are clearly displayed on the LCD. The
measuring variables can also be provided through mA outputs or via SCADA connection.
Parallel operation
ParaGramer
REG-D(A)
u A certain management effort is always required when two or more transformers are
operated in parallel according to the master/follower or minimizing the circulating current
method.
u The ParaGramer function automates the detection of parallel operation. It uses a single
line diagram of the substation to detect the parallel operation. In the master/follower
program the selection of the master takes place automatically. Alternatively, the auxiliary
MSI (master / slave / independent) can be used to explicitly select the function of a
regulator via binary input or SCADA connection.
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSysTM Transformer control and monitoring system
Background programs
REG-D(A) and PAN-D
u The PLC functionality of the REGSys™ voltage regulation system with the proprietary
REG-L programming language makes it especially flexible and powerful. Customer specific
solutions can be implemented quickly and efficiently by employing so called background
programs. Some examples are:
Ø Regulating a transformer bank
Ø Realizing additional limit values
Ø Modifying certain parameters at runtime
Ø Generating additional operating menus and thus parameters
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSysTM Transformer control and monitoring system
SCADA communication
REG-D(A) and PAN-D
u The REGSys™ voltage regulation system supports all common SCADA protocols such as
Modbus RTU, SPA-Bus, Profibus-DP, DNP 3, DNP via Ethernet, IEC 60870-5-101/-103/-104 and
IEC 61850. Furthermore, solutions for remote maintenance (ComServer) and networking of
remote regulators (ELAN over Ethernet) are available.
Parameterization and visualization software
WinREG/REGView
u The WinREG program is available for convenient parameterization, programming and archiving.
The base program can be expanded for different tasks in modular fashion. These are in detail:
Ø REGView, consisting of data collector (Collector) and recorder, to archive and visualize
REGSys™ recorder data
Ø WinTM to parameterize the Transformer Monitoring Module of the REG-D(A) and for
visualization
Ø WinDM to parameterize the REG-DM(A) (pure transformer monitoring device)
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSysTM Transformer control and monitoring system
Monitoring unit(s)
PAN-D, PAN-A1, PAN-A2
u As supplement to the voltage regulators the REGSys™ voltage regulating system includes the
monitoring units PAN-D, PAN-A1 and PAN-A2. Principally, these devices provide an additional
voltage monitoring.
Ø If the voltage is too high or too low the regulating commands are physically interrupted into the
respective direction from the voltage regulator to the tap changer.
Ø The units PAN-A1 and PAN-A2 and PAN-D can signal, in addition, limit violations via relay.
Ø PAN-D is based on the same platform as REG-D and offers even more functions while convenience
is enhanced at the same time (WinREG, background programs, SCADA communication).
Hardware expansions and connectivity
ANA-D, BIN-D
u The already very flexible and comprehensive hardware equipment of the REG-D(A) voltage
regulators can be expanded even further by utilizing ANA-D analogue interfaces (mA inputs or mA
outputs) and BIN-D binary interfaces (binary inputs or outputs). These modules are connected via
the standard available COM3 interface.
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSys™ product features
General Data
Supply voltage: AC/DC 88...264 V or DC 18...72V
Communication interfaces: 3xRS232, 2xELAN
Measurement current input: 1/5A
Number of set point values: four
Range of set point values: 60...140V
Max. number of ELAN devices: 255
SCADA protocols: IEC 60870-5-101, IEC 60870-5-103
IEC 60870-5-104, IEC 61850
MODBUS RTU, SPABUS Profibus DP
DNP 3.0 ,DNP 3.0 via Ethernet
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REGSys™
product features
Please refer to REG-D(A) technical
data for product code selection
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REG-DGA online dissolved gas monitors
ü Analysis of the gases dissolved in oil is recognized as the
most useful tool for early detection and diagnosis of incipient
faults in power transformers
ü By online monitoring key fault gases and moisture, additional
cost reductions and safety improvements can be achieved.
ü Easy installation on operational transformers
ü Light weight
ü No moving parts
ü Voltage supervision in two levels
ü Analysis like Duval’s Triangle, Roger’s Ratio, Dornenburg’s
Ratio
ü Integration with REGSysTM
ü Optional on board GSM
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REG-DGA online dissolved gas monitors
REG-DGA HC 01+c
ü Composite measurement of
the key gases
ü Two Analogue and four relay
outputs
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REG-DGA HC
HC 03
03
REG-DGA
ü Individual measurement of moisture and
ü 单独对湿气及关键气体的独立测量
the key gases
ü
通讯接口RS232，RS-485
ü Communication interfaces RS232, RS 485
ü
ü 可选的内置GSM和模拟调制解调器进
Optional on-board GSM and analog
行远程通讯
modems for remote communication
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Agent product from A-Eberle
REG-DGA online dissolved gas monitors
ü Individual measurement of
moisture and the key gases
ü Communication interfaces
ETHERNET and RS 485
ü Optional on-board GSM and
analog modems for remote
communication
REG-DGA HC 05
35
REG-DGA HC 08
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MuYi
Shanghai Muyi Electric Co.,Ltd
Products Series
Deputy product from GE
HYDRAN*M2
online dissolved
gas monitors
HYDRAN*201i
online dissolved gas monitors
GE Kelman
online dissolved gas monitors
36
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MuYi
Shanghai Muyi Electric Co.,Ltd
Product Series
Deputy product from GE
• GE terminal block
• EB25/26/27
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MuYi
Shanghai Muyi Electric Co.,Ltd
Partner
A-Eberle
Germany
Morgan
schaffer
Canada
MUYI
Calisto
online dissolved gas monitors
made by Morganschaffer
Qualitrol
U.S.A.
Qualitrol 505ITM & 509ITM
intelligent transformer monitors
GE
U.S.A.
38
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MuYi
Shanghai Muyi Electric Co.,Ltd
Quality Control
ü Design complying with relevant
international standard
ü Select famous brand of electric
equipment and elements
ü Perfect and rigorous factory test
verification
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MuYi
Shanghai Muyi Electric Co.,Ltd
Our customers
Qiantang River
Electric Co.,Ltd.
(QRE)
JiangSu HuaPeng
Transformer Co.,
Ltd. (JSHP)
Zhejiang jiangshan
Transformer
Co.,Ltd. (JSB)
Sanbian Sci-Tech
Co., Ltd.
（SANBIAN）
Liaoning EFACEC
Electric Equipment
Co.,Ltd （EFACEC）
Main users in transformer
production
Chint Electric
Co.,Ltd.(CHINT)
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Shenda Electric
Group Co.,Ltd.
(SHENDA)
Shandong Dachi
Electric Co.,Ltd.
(DACHI)
Siemens
Transformer
(Guangzhou) Co.,
Ltd.)
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MuYi
Shanghai Muyi Electric Co.,Ltd
• CongoKinshasa
• South Africa
• Tanzania
• Zambia
• Nigeria
• Kenya
• Zimbabwe
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Europe and Oceania
Africa
• Ukraine
• Kazakhstan
• Belarus
• Bangladesh
• Sri Lanka
• Iran
• Iraq
• Saudi Arabia
• Yemen
• Syria
• Jordan
• Pakistan
America
• Vietnam
• Thailand
• Myanmar
• Malaysia
• Indonesia
• Philippines
• Brunei
• India
• Nepal
Asia
The products have been
exported to over 40
countries worldwide
Asia
Sales
refeerence
• Dominica
• Trinidad and
Tobago
• Ecuador
• Venezuela
• Peru
• Chile
• Paraguay
• Uruguay
• Fiji
• Papua New
Guinea
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MuYi
Shanghai Muyi Electric Co.,Ltd
Service and technical support
Reply customer within 24-48 hours after
receiving of email and phone call
After service (domestic) within 24-48
hours after getting request
After service for abroad customer is
available
42
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MuYi
Shanghai Muyi Electric Co.,Ltd
Thank you very much for your attention
please feel free to contact us if you have any
question or require technical support
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