TECO MV510 Series User manual

MV
510
Super Energy-Saving Medium-Voltage AC Drive
MV510 Series
User Manual
Please be sure to hand in this user manual to customers.
Manual No: 4KD72X002W01 VER 02

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. I
Version History
REV DESCRIPTION
00 Initial
01 Table 1-1 Variation range of voltage rating changes from -20% ~
+15% to -10% ~ +10%.
02 Table 1-1 Parameters change

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. II
Contents
Chapter I System Introduction ........................................................................................................ 5
1.1 Preface .............................................................................................................................. 5
1.2 System Overview .............................................................................................................. 6
1.3 System Characteristic ........................................................................................................ 6
1.4 System Model ................................................................................................................... 8
1.4.1 Product Model ........................................................................................................ 8
1.4.2 Product Label ......................................................................................................... 8
1.5 System Hardware .............................................................................................................. 9
1.5.1 Control Cabinet .................................................................................................... 10
1.5.2 Power Cell Cabinet .............................................................................................. 10
1.5.3 Transformer Cabinet ............................................................................................ 10
1.5.4 Bypass Cabinet ..................................................................................................... 11
1.6 Specification ................................................................................................................... 11
Chapter II Precautions................................................................................................................... 13
2.1 General ............................................................................................................................ 13
2.2 Safety Precautions ........................................................................................................... 13
2.3 Usage Precautions ........................................................................................................... 14
Chapter III Site Installation Instructions ....................................................................................... 16
3.1 Appearance and Weight................................................................................................... 16
3.1.1 Control Cabinet and power cell Cabinet .............................................................. 16
3.1.2 Transformer Cabinet ............................................................................................ 17
3.1.3 Bypass Cabinet ( Optional, Automatic Bypass Cabinet ) ..................................... 17
3.2 Installation Requirements ............................................................................................... 18
3.2.1 Installation Environment ...................................................................................... 18
3.2.2 Storage Environment ............................................................................................ 19
3.2.3 VFD Layout ......................................................................................................... 20
3.2.4 Equipment Foundation ......................................................................................... 21
3.2.5 Equipment Grounding .......................................................................................... 23
3.3 Installation Process ......................................................................................................... 24
3.3.1 Acceptance Check ................................................................................................ 24
3.3.2 Estimated Weight ................................................................................................. 24
3.3.3 Transportation ...................................................................................................... 24
3.3.4 Cabinet Connection and Fixation ......................................................................... 25
3.3.5 Installation of Power Cells ................................................................................... 26
3.3.6 High Voltage Insulation Test on VFD .................................................................. 27
3.3.7 Electrical Wiring .................................................................................................. 28
3.4 Inspection after Installation ............................................................................................. 33
Chapter IV Function Introduction ................................................................................................. 34
4.1 General ............................................................................................................................ 34
4.2 Control Functions Related to Motor Drive ..................................................................... 34
4.2.1 Control Modes...................................................................................................... 34

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. III
4.2.2 Frequency Setting Methods .................................................................................. 35
4.2.3 Setting of Frequency Hopping .............................................................................. 35
4.2.4 Torque Boost ......................................................................................................... 36
4.2.5 Self-adaption of Output Voltage ........................................................................... 36
4.2.6 System Over-current Limitation ........................................................................... 37
4.2.7 Bus Overvoltage Limitation ................................................................................. 37
4.2.8 Self-start after Instantaneous Power Failure ......................................................... 37
4.2.9 Flying Start ........................................................................................................... 38
4.2.10 High Voltage Sampling ....................................................................................... 38
4.2.11 Modulation System ............................................................................................. 38
4.2.12 Restore Factory Settings ..................................................................................... 39
4.3 Input and Output Signal Functions .................................................................................. 39
4.3.1 Digital Input .......................................................................................................... 39
4.3.2 Digital Output ....................................................................................................... 40
4.3.3 Analog Input ......................................................................................................... 41
4.3.4 Analog Output....................................................................................................... 41
4.4 Supervision and Display Functions ................................................................................. 42
4.5 Communication Function ................................................................................................ 42
4.6 Switch between Power Grid and VFD ( Optional ) ......................................................... 43
Chapter V Operating Principles ..................................................................................................... 44
5.1 Brief Introduction ............................................................................................................ 44
5.2 Main Circuit..................................................................................................................... 45
5.2.1 Phase-shifting Transformer ................................................................................... 46
5.2.2 Power Cells ........................................................................................................... 47
5.3 Control System ................................................................................................................ 52
5.3.1 Master Control System ......................................................................................... 53
5.3.2 Electrical Control System ..................................................................................... 54
Chapter VI Site Commissioning Instructions ................................................................................ 55
6.1 Range ............................................................................................................................... 55
6.2 Terms ............................................................................................................................... 55
6.3 Commissioning Instructions ............................................................................................ 56
6.3.1 Test Items .............................................................................................................. 56
6.3.2 Inspection on Power Supply in Control Cabinet................................................... 56
6.3.3 Simulation Test ..................................................................................................... 57
6.3.4 Individual Test ...................................................................................................... 59
6.3.5 Cascade Test of Power Cells ................................................................................. 60
6.3.6 No-load Test with Motor....................................................................................... 61
6.3.7 Load Test with Motor ........................................................................................... 63
6.3.8 Run Test with Load Connected ............................................................................. 65
Chapter VII Troubleshooting and System Maintenance ................................................................ 66
7.1 Fault Classification .......................................................................................................... 66
7.2 System Maintenance ........................................................................................................ 74
7.2.1 Safety Information ................................................................................................ 74
7.2.2 Maintenance Instructions ...................................................................................... 75

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. IV
Appendix: Overview List of VFD Inspection Items ..................................................................... 77
Appendix : Abbreviation Table ..................................................................................................... 78

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 5
Chapter I System Introduction
1.1 Preface
Thank you for choosing our MV510 series products and becoming a user of our
company! We will provide you with the best technology and highest quality
products!
TECO Electric And Machinery Co., Ltd. was established in mainland China by Antai
International Invest (Singapore) Private Ltd. which belongs to a global well known
TECO Group on July 1, 2000. The company is located in National High and New
Technology Industry Development Zone in Wuxi, Jiangsu province with total
investment of $24 million and the registered capital is $16.5 million. The company
has international standard workshop, first-class product quality, and professional
employees. The target is 2.5 billion RMB for future annual output value.
Currently, the company has about 1000 employees working in production, sales
and marketing, research personnel of industrial control, low voltage products, and
electronic equipment, including Elements Branch and Electronics Branch. Elements
Branch has great production management capability, highly qualified automation
technology, advanced production equipment, and a professional sales team. The
mainly manufacture and sale low voltage products, and also manufacture power
distribution products. Elements Branch offers a wide range of low voltage products.
Products have reliable quality, reasonable price, and high customer rating. Power
distribution products also have outstanding performance, reasonable price, and good
market acceptance. To meet the market requirement, new products are developed to
ensure market competitiveness.
Electronics Branch has the most advanced equipment and assembly line, the
implementation of decentralized control and centralized management in the new
control system as the center, the technical personnel with high level of electronic
technology and rich experience, and with the latest electronic technology as the
foundation, according to the demands of producing, providing a flexible production
system the VFD more flexible. The production of industrial products has won the
recognition of industry, production and sales.
MV510 series products are developed and produced by our company with

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 6
independent intellectual property rights, with no power grid pollution. MV510 series
products can be used in a variety of different areas of the industrial environment, and
a variety of complex occasions can meet the motor speed control and energy saving
requirements.MV510 series products belong to high voltage equipment, and users
must comply with some safety precautions. In order to make you more convenient
and efficient to use our products, please read this user manual carefully before
operating them.
1.2 System Overview
MV510 series products are manufactured at TECO Electric And Machinery Co, Ltd.
MV510’s topology is multiple-level cascaded. In other word, multiple low voltage
VFDs called power cells are used to be connected in series to create medium voltage
output, and the system doesn’t need any boosting transformer in output side.
The input isolation transformer adopts a phase-shift transformer. Due to the
topology of the drive, the input waveform is close to a sine wave with very low input
harmonics affecting the power grid.
The carrier phase-shifted PWM technology is used to generate the needed
output voltage and make the output voltage waveform very close to an ideal sine
wave. So, the MV510 system can be directly connected to a medium voltage motor
without an output AC filter.
1.3 System Characteristic
MV510 series medium voltage variable frequency system has the following
advantages:
System integration design includes the input isolation transformer, power cells
and control unit. Users only need to connect the medium-voltage input,
medium-voltage output, low-voltage control power and control signal wires. The
entire system is tested in the factory before shipping out.
Input conforms and be superior to IEEE519 ~ 1992 standards for voltage
distortion and current distortion of the most stringent requirements.
VFD is medium-medium structure with medium voltage directly output. It
doesn’t need output boosting transformer. Output is to adopt modules series with
phase-shifting PWM mode. Under full modulation, the number of output phase

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 7
voltage levels is 2*N+1, line voltage level is 4*N+1 (N is the number of the series
power cells per phase.)
When operating in 30% ~ 100% of the load, power factor is higher than
0.96.(No power factor compensation VFD is required.)
The system can output sinusoidal current and voltage waveform without any
output filter. Without special requirements for the motor, the VFD can drive normal
asynchronous motor, and the motor can be used without de-rating. With soft-start
function, no voltage drop due to the motor start-up shock, ensure motor can work
with safety and long-term operating.
With resonance frequency jump function, the VFD output waveform will not
cause the motor resonance.
The VFD has no requirement for the output cable length, and the motor will not
be affected by the common-mode voltage and dv/dt.
The VFD has very strong adaptability to input voltage fluctuation, operating
with full load in ±10%.The VFD can continue to run without tripping (30% drop in
voltage). For 40% voltage reduction, VFD can operate in a short time.VFD does not
trip against power grid instantaneous loss of 5 cycles to full load operation, or longer
time to light load operation.
During 30% to 100% rated load, the efficiency can be achieved 96% and above.
Modular structure of power cell can be interchangeable and easy in maintenance.
Power modulation automatic bypass function further improves the reliability of the
operation.
The connection between power cell module and the main control system is to
adopt the optical fiber for upgrading the communication speed and the
anti-interference ability. The security becomes very outstanding.
Control system uses digital computer control system with self-diagnostic
function.
Speed range: 0-100% continuously adjustable, frequency accuracy: 0.5%,
acceleration or deceleration time 0.1 ~ 6500.0 seconds (according to load conditions
it can be set.), the critical speed can be skipped.(a total of 3 groups can be arbitrarily
set. )
Overload ability is 120% 1 min, or the customized requirements.

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 8
Using HMI panel with Chinese or English display, easy to learn, easy to grasp
and operation. The touch screen can display the working condition, working
parameter, and fault type and fault point of VFD at any time for easy analysis and
searching.
1.4 System Model
1.4.1 Product Model
Model number of medium voltage variable drive is shown as below:
MV510 - HA0 / 100 - S00
① ② ③④ ⑤ ⑥⑦
① MV:TECO medium voltage series drive
② Series number：510 Asynchronous ( Motor ) series，
512Synchronous ( Motor )series
③ Input voltage level:
A-2.4kV, B-3kV,C-3.3kV,D-4.16kV,E-6kV,
F-6.6kV,G-7.2kV,H-10kV,J-11kV,K-13.8kV,X- others
④ Output voltage rating:
24-2.4kV,33-3.3kV,42-4.16kV,66-6.6kV,A0-10kV,B0-11kV,
C0-13.8kV, etc.
⑤ Current rating：075,120, etc.
⑥ S: Standard，B: Power Cell Bypass
⑦ Customization coding
Example:
MV510-E60/100-S00 shows the MVD of TECO Electric & Machinery Co.,Ltd. with
6kV input voltage, 6kV output voltage, and 100A rated current power cell.
1.4.2 Product Label
Product nameplate of TECO Electric And Machinery Co, Ltd. for MV510 series
drive is shown as below.

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 9
Figure 1-1Product nameplate
Product nameplate includes the following:
 Product model, specifications, product number, etc.
 Technology specification
 Product use scope and degree of protection
 Manufacturer, manufacturing date, etc.
1.5 System Hardware
MV510 series drive cabinet outline depends on voltage level, power, model and
other related factor. The main structure includes basic control cabinet, power cell
cabinet, transformer cabinet, and bypass cabinet. Figure 1-2 shows typical complete
assembly of a medium voltage VFD cabinet.

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 10
Figure 1-2A typical outlines drawing of MV510 series drive
1.5.1 Control Cabinet
This cabinet includes main control system, electric control system, user I/O
terminals, communication and remote control function.
1.5.2 Power Cell Cabinet
Each unit is with a three-phase AC input and a single-phase inverter output.
The input is respectively connected with the secondary output of the phase-shifting
transformer, and the power cell output of each phase is connected in series to
constitute the VFD main circuit, output PWM waveform to directly drive
high-voltage motor.
Power cell is designed in modularized configuration. Power cells are easily
swappable, and they only require front access which makes the installation and
maintenance easy. Each power cell contains its own control board and communicates
with the main control system via optical fiber communication. This is the only
connecting between the main control and power cell. Each power cell and main
control systems are entirely isolated.
1.5.3 Transformer Cabinet
With phase-shifting transformer, the primary winding is a high-voltage directly
input, and the secondary winding for each power cell provides AC input voltage.
Secondary winding adopts phase-shifting technology to make the harmonic pollution
to the grid very small. Therefore the total harmonic in input side of the grid is
reduced to 4% or less, directly meeting the IEEE519-1992 harmonic suppression

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 11
standards.
1.5.4 Bypass Cabinet
User can choose Bypass Cabinet as required. Bypass function can be
implemented in case of VFD failure. The connection of power cables is from
Bypass cabinet to Transformer cabinet for input high voltage, and from Bypass
cabinet to motor for output voltage. Different equipment can be configured according
to users’ requirements, such as manual bypass cabinet or automatic bypass cabinet.
1.6 Specification
MV510’s voltage range is 2.4kV ~ 13.8kV and rated current is 37A ~ 800A.
The following table lists will show you the public electrical and mechanical
specifications of MV510 series drives.

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 12
Table 1-1General specifications of MV510 series drives
VFD rated capacity 250~10000kW/315~12500kVA ※
Input voltage rating 2.4kV~13.8kV（-10%～+10%）※
Rated frequency 50Hz/60Hz（-10%~+10%）
Modulation technology CPS-SPWM
Control mode 380VAC~480VAC（3P4W），25~30kVA(depend on power level)
Power control 380VAC，5-30kVA(depend on power level)
Input power factor >0.95( Above 20% load)
Efficiency >98% (excluding transformer)
Output frequency 0Hz～120Hz
Frequency resolution 0.01Hz
Instantaneous
over
-
current
protection 180% Immediate protection
Overload capacity 120% 60sec.
Current limiting
protection 10%-150% setting
Analog input 2 loops 4～20mA(extensible)
Analog output 4 loops 4～20mA(extensible)
Communication Modbus RTU(optional)、Profibus DP(optional)、 TCP/IP(optional)
Deceleration time 0.1sec.～6000sec. (related to the load)
Digital I/O 12 loops DI / 9 loops DO( can expanded)
Environment temperature -5～+40℃
S
torage/transportation
temperature -40～+70℃
Cooling way Forced air cooling
Environment humidity <90%, no condensation ※
The installation elevation <1000m，Higher altitudes 1000m，For every 100 m derating1%
increase
Dust Non-conductive, non-corrosive，<6.5mg/dm3
Protection grade
IP30,IP31(customized)
Cabinet color RAL7035( customized)
※ Please consult with TECO Co. Ltd. for the information beyond the above table.

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 13
Chapter II Precautions
2.1 General
When MV510 Series VFD is operated or used, safety precautions and relevant
operating instructions must be strictly followed. Any incorrect operation may cause
personal injuries and equipment damages. In order to prevent any electric shock or
burn accident from happening and protect the equipment, be sure to read this manual
before using the VFD. Besides, when operating the equipment, be sure to follow the
requests in the safety signs and labels on the product.
2.2 Safety Precautions
Note: The product is high voltage electrical equipment. Please use it with
attention!
Personal safety is sufficiently considered in the design of the VFD. However,
just like other high voltage equipment, some safety regulations must be followed
during its operation.
(1) Operators and maintainers of the VFD must have been specially trained,
achieved the qualification certificate for operating and using electrical
equipment, and carefully read this user manual.
(2) Be sure to install safety protection fence ( with the warning board of high
voltage danger ). Don’t move it away during the VFD operation.
(3) Be sure to follow high voltage operating instructions during maintenance, like
wearing insulating gloves, insulating shoes and safety glasses. Be sure to
have other staff at site for protection during work.
(4) It is prohibited to place inflammable materials beside the VFD.
(5) All of bypass cabinet, transformer cabinet and unit cabinet of the VFD are
high voltage danger area. Please close and lock the cabinet doors before
turning power on. Be sure not to open the cabinet doors for work or operation,
unless for maintenance or safety inspection. Otherwise, please don’t casually
open the cabinet doors.
(6) Control cabinet and other cabinets adopt optical fiber isolation technique and
have no high voltage but still only trained and authorized personnel are
allowed to operate them.

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 14
(7) Be sure absolutely not to touch the inside of equipment with wet hands.
(8) Don’t open cabinet doors and more seriously don’t touch any part inside
the equipment within 15 minutes after main power supply is switched off.
Relevant safety precautions are mentioned in other chapters and sections of
this manual. These safety precautions must be followed to prevent personal
injuries and equipment damage from happening.
2.3 Usage Precautions
(1) Application environment shall accord with the technical condition
requirements of the product.
(2) Conduct the installation strictly following the installation steps provided in
this manual.
(3) Operating and using staff of the product must be operating and using staff of
electrical equipment who has received professional training.
(4) Products will unavoidably and constantly accumulate dust and different
kinds of impurities during operation so regular clean and maintenance must
be conducted on the product.
(5) After the product operates for certain time, fan vibration and other
mechanical vibration may cause electrical contact parts becoming loose so
as to cause poor contact and even the damage of parts, components and
complete machine, which leads to users’ inconvenience and loss. As a result,
after the product operates for certain time, maintenance, clean and
inspection shall be conducted to prevent loss from happening.
(6) Ground resistance shall be frequently inspected to see if it accords with
equipment operation requirements and the requirements in national
standards. Dangers may happen if ground resistance doesn’t accord with
requirements.
(7) Recording system of equipment operation status and application
maintenance system shall be established.
(8) Make sure the motor stays still before starting the VFD.
(9) Follow the order of switching on/off power supply. For the startup process,
first provide control power, and then on the high-voltage power supply. For
stop process, the motor stops totally, and then turn off high voltage powers

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 15
supply and at last turn off control power supply.
(10) During the VFD operation, its user shall supervise the load operation status
all the time and timely switch off the VFD if any abnormal status happens.
(11) Be sure good indoor ventilation and maintain environment temperature
within the range of 0-40℃.
(12) Be very careful when handling or measuring the parts inside the VFD, and pay
attention not to make short circuit among instrument wires or touch other
terminals.
(13) It’s forbidden to forcibly switch off the fan’s power supply during the
system operation, which will cause superheat and damage VFDs.
(14) Fault maintenance by users shall be limited to recording fault phenomenon
and changing units if necessary and further repair work shall be handed
over to our company.
(15) Be sure to replace power cell beyond 15 minutes after switching off high
voltage power supply and confirm all the indicators on VFD units are off.

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 16
Chapter III Site Installation Instructions
3.1 Appearance and Weight
In this section, we mainly introduce basic appearance of different parts of
MV510 Series VFD. We take Model MV510-E60/100-S00 ( automatic bypass )
VFD for example to introduce various parts as follows. See specific outline
dimensions of configured VFD in the outside drawing that our company provides
to corresponding project.
3.1.1 Control Cabinet and Power Cell Cabinet
Approximate weight: 2750kg ( including the weight of power cells )
Figure 3-1 Outside Drawings of Control Cabinet and Power Cell Cabinet

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 17
Figure 3-2 Outside Drawing of Power Cell
3.1.2 Transformer Cabinet
Approximate weight: 3270kg ( including transformer weight )
Figure 3-3 Outside Drawing of Transformer Cabinet
3.1.3 Bypass Cabinet (Optional, Automatic Bypass Cabinet)
Approximate weight: 600kg

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 18
Figure 3-4 Outside Drawing of Automatic Bypass Cabinet
3.2 Installation Requirements
3.2.1 Installation Environment
Accord with the following environment indexes
S/N Item Requirement
1 Environment
temperature The temperature shall be within the range of 0℃~40℃
2 Environment
humidity
It shall not be over 90% at the lowest temperature and no
condensation will happen for temperature change
3 Altitude 1000m
Lower than altitude 1000m
4 Atmosphere Between 860~1060hPa

MV510 Series High Voltage VFD User Manual
TECO Electric & Machinery Co., Ltd. 19
5 Indoor air quality
In the room where the equipment is installed, the air conditions shall
be kept at normal aerial dust
standard, especially for iron particles
and organic particles, like organic silicon
6 Corrosion factors
Corrosion factors Density or quantity
Corrosive
gases
Hydrogen sulphide （H2S）
≤0.001PPM
Sulphur dioxide（SO2） ≤0.05PPM
Chlorine（CL2） ≤0.1 1PPM
Ammonia gas（NH3） ≤0.1 1PPM
Nitrogen dioxide（NO2） ≤0.02PPM
Nitric oxide（NOX） ≤0.02PPM
Ozone（O3） ≤0.002PPM
Acid mist of chlorine hydride
（HCL1） ≤0. 1mg/m 3
Note:
 Please use dust collector to clean the room where the equipment is placed so
as to prevent more dusts.
 Please don’t use silicone waxes in the room where the equipment is placed,
which will influence the motor.
 When external cables ( grounding cable, main circuit cable and control cable )
are connected into equipment cabinet, please confirm if the cable holes are
sealed with stannic oxide. If the holes for connecting in cables are not sealed,
air will get into the equipment and the installation environment mentioned
above will be not safe, which will cause severe damage to the equipment.
3.2.2 Storage Environment
Please confirm the following different indexes related environment condition
in the place where the equipment is stored:
 The equipment shall be placed indoor.
 Environment temperature shall be kept in the range of -40℃～70℃and there
shall be no dramatic temperature changes.
 It’s suggested to store the equipment at a place where the humidity is in the
range of 50%～60%. If the storage environment can’t reach it, store the
equipment at a place with the humidity not over 90% and no condensation