Electrical Machine Transformer & Synchronizing Trainer

Product Overview

The machines are basically industrial models, self-protect kind, with coupling half-joint, especially equipped to be suitable for student training in laboratory. For this purpose, the winding ends are connected to 4 mm safety socket in a metal housing on top of which a clear synoptic diagrams as educational terminal board.

The student can easily understand operation and winding connection. Also, most of accessories and instruments designed in Panel System A4 high in standard. The machine s powers are 370W/750W, as the supply requirement for the system operation requires 240/415V, 50Hz.

Applications

Electrical Machine, Transformer & Synchronizing Trainer has been designed for experimental and testing in electrical machines in education.

Technical Specifications

DC SHUNT WOUND MACHINE

• Nominal Power: 370W (1/2HP)
• Nominal Voltage: 220VDC
• Nominal Current: 1.50
• Nominal Speed: 1500 rpm
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

DC SERIES WOUND MACHINE

• Nominal Power: 370W (1/2HP)
• Nominal Voltage: 220VDC
• Nominal Current: 1.50
• Nominal Speed: 1500 rpm
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

DC COMPOUND WOUND MACHINE

• Nominal Power: 370W (1/2HP)
• Nominal Voltage: 220VDC
• Nominal Current: 1.50
• Nominal Speed: 1500 rpm
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

THREE PHASE INDUCTION MOTOR

• Nominal Power: 370W (1/2HP)
• Nominal Voltage: 450 / 690V (Delta/Star)
• Nominal Current: 2.50 / 1.50A (Delta/Star)
• Nominal Speed: 3000 rpm
• Cooling Method: Self Cooling Fan
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

THREE PHASE INDUCTION MOTOR (750W) (2 UNITS)

• Nominal Power: 750W (1HP)
• Nominal Voltage: 240 / 415V (Delta/Star)
• Nominal Current: 2.85 / 1.850A (Delta/Star)
• Nominal Speed: 1500 rpm
• Cooling Method: Self Cooling Fan
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

THREE PHASE SLIP RING MOTOR

• Nominal Power: 370W (1/2HP)
• Nominal Voltage: 240 / 415V (Delta/Star)
• Nominal Current: 4.5 / 4.0A (Delta/Star)
• Nominal Speed: 1500 rpm.
• Frequency: 50Hz
• Cooling Method: Self Cooling
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

THREE PHASE SYNCHRONOUS MACHINE

• Nominal Power: 370W (1/2HP)
• Nominal Voltage: 240 / 415 V (Delta/Star)
• Nominal Current: 1.85 / 2.85 A (Delta/Star)
• Nominal Speed: 3000 rpm
• Frequency: 50 Hz
• Excitation Voltage: 0 ~ 50 VDC
• Excitation Current: 0.25 A
• Winding Poles: 2
• Cooling Method: Self Cooling
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

ROTOR RESISTANCE STARTER UNIT

• Switching adjustable in 2 steps and able to start Three Phase Slip Ring Machine (Wound Rotor Motor) up to 750W, 415V, 50Hz.
• Horse Power : 2
• F.L.S.T. : 150
• Rotor Voltage : 120
• Rotor Current : 5
• Step : 2
• STAR Point : 1

SINGLE PHASE CAPACITOR START MOTOR

• Nominal Power: 370W
• Nominal Voltage: 240VAC
• Nominal Current: 2.5A
• Nominal Speed: 1500rpm
• Frequency: 50Hz
• Power Factor: 0.78
• Winding Poles: 4
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

SINGLE PHASE CAPACITOR START & RUN MOTOR

• Nominal Power: 370W
• Nominal Voltage: 240VAC
• Nominal Current: 2.5A
• Nominal Speed: 1500rpm
• Frequency: 50Hz
• Power Factor: 0.78
• Winding Poles: 4
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

SINGLE PHASE INDUCTION MOTOR

• Nominal Power: 375W
• Nominal Voltage: 240VAC
• Nominal Current: 2.5A
• Nominal Speed: 1500rpm
• Frequency: 50Hz
• Power Factor: 0.78
• Winding Poles: 4
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

SINGLE PHASE SPLIT PHASE MOTOR

• Nominal Power: 375W
• Nominal Voltage: 240VAC
• Nominal Current: 2.5A
• Nominal Speed: 1500rpm
• Frequency: 50Hz
• Power Factor: 0.78
• Winding Poles: 4
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

UNIVERSAL AC/DC MOTOR

• Nominal Power: 350W (AC/DC)
• Nominal Voltage: 240 V (AC/DC)
• Nominal Current: 3.0 A
• Nominal Speed: 3000 rpm.
• Frequency: 50 Hz
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Break Load Unit

TACHOGENERATOR :

• Power Rating: 350W
• Output Voltage: 0 ~ 80V
• Current: 250mA
• Speed: 3000rpm
• Motor Coupling Set (Must Compatible For Motor or Prime Mover)
• Base Plate (Musts Compatible With Motor or Prime Mover)

DC GENERATOR BRAKE

• Nominal Power: 750W (1HP)
• Nominal Voltage: 220VDC
• Nominal Current: 2.0A
• Nominal Speed: 1500 rpm
• Terminals: 4mm Safety Socket
• Cooling Method: Self Cooling
• Base Plate: Attachable To Break Load Unit

THREE PHASE AC GENERATOR BRAKE

• Nominal Power: 750W (1HP)
• Nominal Voltage: 240/415AC
• Nominal Current: 2.5A
• Nominal Speed: 3000 rpm.
• Frequency: 50 Hz
• Excitation: Permanent Magnet
• Cooling Method: Self Cooling
• Terminals: 4mm Safety Socket
• Base Plate: Attachable To Motor Unit

TORQUE SENSOR MODULE

• Motor direct coupling design
• Sensor Type: Noncontact rotation torque transducer
• Max. torque: 10Nm
• Max Rotation speed: 12000rpm
• Torque Output: Frequency
• Speed Output: Frequency
• Connection: Shaft and Coupling

TORQUE MANAGEMENT SOFTWARE

• PC management software
• Data collection the measured data by computer serial port
• Display and save the real-time data
• Transform the saved data to TXT, EXCEL file
• By curve analyses, curve print, trend browse, report generation, report edition and report print, etc.

TORQUE SPEED MEASURING MODULE

Modular design

• Power Supply: 240 V, 50/60 Hz
• Unit Type: Panel H2
• Torque range: -99999-99999 N.m.
• Torque display: 0-99999N.m
• Speed display: 0-99999
• Power consumption: 0-99999
• Measurement resolution: support resolution 1/1000000
• Measuring speed: 25 times per second
• Pulse input signal: all kinds of output sensor signal, like NPN, PNP, OC, switches and rotary encoder
• Measurement Frequency: Speed pulse input 0.3Hz 20KHz Torque pulse input, 5KHz 15KHz, can extend to 1HZ~60KHZ
• Standard transmitter output
• Optoelectronic isolation
• Two 4mA~20mA DC current output, Output resolution ratio: 1/4000 error less than 0.2%, F.S, loading capacity: less than 600
• External Power Supply: 15VDC or 24VDCoptional, loading capacity more than 300mA
• Serial communication port as standard configuration
• Optoelectronic isolation

AC/DC GENERATOR BRAKE CONTROLLER

Modular design

• Suitable for all type of AC and DC Generator Brake up to 2HP
• Measurement Range: 0% to 100%
• Protection: Fuse
• Unit Type : Panel H2
• Terminals: 4mm Safety Sockets

SHUNT FIELD RHEOSTAT

Modular design

• Resistance: 0 ~ 2200 Adjustable
• Current: 1.5A
• Rated Power: 300W
• Protection: Fuse
• Terminals : 4 mm safety sockets

SINGLE PHASE TRANSFORMER

• Rated Transformer
• Primary Voltage: 2x240V
• Secondary Voltage: 2x120V
• Power: 300VA
• Frequency: 50Hz
• Terminals: 4mm Safety Socket
• Unit Type : Panel H1

THREE PHASE TRANSFORMER

• Each primary and secondary windings are divided in two sections to allow many possibilities of connection including star, delta and zig-zag.
• Primary Voltage: Three Phase 415V (3x2x207.50V)
• Secondary Voltage: Three Phase 240V (3x2x120V)
• Power: 1000VA
• Frequency 50Hz
• Terminals: 4mm Safety Socket
• Unit Type : Panel H1

RESISTIVE LOAD UNIT

• Single & Three phase Resistive Load 7 steps variable per phase
• Max Power : 3 100 watt
• Voltage : 240/415 Volt
• Frequency : 50Hz
• Protection : Fuse

INDUCTIVE LOAD UNIT

• Single-Three phase Inductive Load 7 steps variable per phase
• Max Power : 3 100 VAR
• Voltage : 240/415 Volt
• Frequency : 50Hz
• Protection : Fuse

CAPACITIVE LOAD UNIT

• Single & Three phase Capacitive Load 7 steps variable per phase
• Max Power : 3 100 VAR
• Voltage : 240/415 Volt
• Frequency : 50Hz
• Protection : Fuse

REACTIVE COMPENSATOR

Modular design

• Capacitors: 2 F / 450V x 3
• 3 F / 450V x 3
• Terminals : 4 mm safety sockets

DIGITAL DC VOLTMETER

Modular design

• Measurement range : DC 0 ~ 600V
• Display : 3 digits 14.2 mm LED
• Accuracy : 0.2% 1 digit
• Resolution : 1V
• Input impedance : 1M
• Power source : 220Vac, 50/60 Hz
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets

DIGITAL DC AMMETER

Modular design

• Measurement range : DC 0 ~ 5A
• Display : 3 digits 14.2 mm LED
• Accuracy : 0.3% 1 digit
• Resolution : 0.01 A
• Input impedance : < 0.1
• Power source : 220Vac, 50/60 Hz
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets

DIGITAL AC VOLTMETER

Modular design

• Measurement range : AC 0 ~ 600V
• Display : 3 digits 14.2 mm LED
• Accuracy : 0.2% 1 digit
• Resolution : 1V
• Input impedance : 1M
• Power source : 220Vac, 50/60 Hz
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets

DIGITAL AC AMMETER

Modular design

• Measurement range : AC 0 ~ 5A
• Display : 3 digits 14.2 mm LED
• Accuracy : 0.3% 1 digit
• Resolution : 0.01 A
• Input impedance : < 0.1
• Power source : 220Vac, 50/60 Hz
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets

THREE PHASE POWER QUALITY METER

• Display Type: HD LCD Display
• Real-Time Measurement
• Phase voltage: V1, V2, V3, Vlnavg Line voltage: V12, V23, V31, Vllavg Current: I1, I2, I3, Iavg, In Active power: per phase and total active power Reactive power: per phase and total reactive power Apparent power: per phase and total
• Energy And Demand
• Four quadrant active energy: Import, Export, Total, Net Four quadrant reactive energy Power Quality Analysis
• Voltage unbalance Current unbalance Voltage THD (Total harmonic distortion), Odd-even harmonic distortion Voltage individual harmonics, Crest factor Current THD, Odd-even harmonic distortion Current individual harmonics, K factor
• Communication
• Ethernet 10/100M network port
• RS485 communication port
• MODBUS RTU communication protocol
• Settable Logging Interval
• Logging from 1min to 60min, interval settable
• Software Accessibility
• 4 Tariffs (DataLog) Sharp, peak, flat, valley in different season and schedule (TOU)
• PowerMeter Management Software Interface
• Accuracy: 0.5%
• Protection: Fuse
• Power Supply: AC240VAC, 50Hz
• Terminals: 4mm Safety Socket
• Unit Type : Panel H2

POWER MANAGEMENT SOFTWARE

• PC management software; web browse data
• True-RMS measuring parameters
• ANSI and IEC 0.2 accuracy class
• Power quality analysis
• 4 quadrant energy
• Data logging
• Measure individual harmonics from 2nd to 49th
• TOU, 4 Tariffs, 6 Seasons, 6 Schedules

MOTOR COUPLING, COUPLING SLEEVE & SAFETY GUARD

• Motor Coupling EM-21-CS for each Motors and Generator (17 units)
• Coupling sleeve (2 Units) for mechanical connection of two Electrical Machines.
• Coupling guard (2 units)
• Material : Epoxy Coated Plate
• Attachable guard for protection against contact with electrical machines rotating part

TACHOMETER

• Range: 5 to 99,999 RPM
• Resolution:
• 0.1RPM <1000RPM
• 1RPM>1000RPM
• Display: 5 Digits, 10mm (0.4 )LCD
• Accuracy: 0.05%+1 Digits
• Photo Detection Distance: 50 to 150mm
• Battery: 1.5V AA x 4 pcs
• Memory: Last Value, Max. Value, Min. Value
• Size: 190 x 72 x 37 mm
• Weight: 250g

CONNECTING SAFETY TEST LEAD SET WITH BRIDGING PLUG SET

• The set consists of 2 type lead set and 2 type bridging plug set in 5 different coded colors and lengths chosen to allow the realization of all experiment manual.
• Leads are capable of 15A current safety plugs.
• Safety Terminal Socket (4mm): 25cm x 15 units; 50cm x 20 units; 100cm x 15 units
• 19mm Bridging Plug Set x 10 units
• 19mm Bridging Plug Set (Stackable) x 10 units

STAR DELTA STARTING SWITCH MODULE

Modular design

• Switch load: 400VAC/15A
• Switch positions: 0-1-2 (0-Y- )
• Unit Type : Panel H1
• Terminals : 4 mm safety sockets

ROTATION REVERSING SWITCH MODULE

Modular Design

• Switch Load: 400VAC/15A
• Switch positions: FORWARD-OFF-REVERSE
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets (Color Coded)

POWER DRIVE SOFT STARTERS MODULE

Modular Design

• Connection: TP+N
• Soft Starter: 2 Phase-Controlled 3 , 415V
• Power Rating: 3HP, 4.8 A , Uc=110-230V AC/DC
• Unit Type : Panel H1
• Terminals: 4mm Safety Socket

AC VARIABLE FREQUENCY DRIVE

• Type: 1.5KW (2 HP)
• Power Supply: Three phase 415V, 50Hz
• Power Terminals: R, S, T terminals
• Inverter Output: U, V, W
• Braking Resistor Terminals: P & B
• Panel Control Start/Stop, FWD and REV
• Terminal Control Start/Stop, FWD and REV
• Signal Input: 0-10V
• Digital Input: S1 to S5
• Analog Output: 4-20mA & AO
• Relay Output: RA RB RC
• Terminals : 4mm Safety Sockets

UNIVERSAL AC & DC POWER SUPPLY

• The system designed to provide all fixed and variable AC and DC supplies which necessary in an electrical machines laboratory to perform the experiment required and work project.
• The unit is contained in a metal housing with clear front panel label and 4mm safety sockets that make its easy and safety for student experiments.

Specification

• Power Input Requirement: Three Phase 240V/415V, 50Hz Connection: 3P+N+PE Output terminations by using 4mm terminals socket.
• Input fed with AC 5 pin plug 32A AC Plug and Socket.
• Pilot lamps provided to indicate all live supplies.
• With On/Off Selector Switch
• Fuse Protection
• Power Rating: 3KVA

Output Supply Section

Fixed Single Phase AC Power Supply:

• 3 x 240V AC; 5A AC (Phase To Neutral; R-N, B-N, Y-N)

Fixed Three Phase AC Power Supply:

• 3 x 450V AC; 5A AC (Phase To Phase; R-Y, Y-B, B-R)

Adjustable Single Phase & Three Phase AC / DC Power Supply (Simultaneously):

• 3 x 0 ~ 450VAC; 5A AC (Phase To Phase)
• 3 x 0 ~ 240VAC; 5A AC (Phase To Neutral)
• 1 x 0 ~ 430VDC; 5A DC (DC Output)

UNIVERSAL AC/DC POWER SUPPLY

• The system designed to provide all fixed and variable AC and DC supplies which necessary in an electrical machines laboratory to perform the experiment required and work project.
• The unit is contained in a metal housing with clear front panel identification and 4mm safety sockets that make its easy and safe.

Three Phase Power Supply

• Power Input: 3 Phase 240V/415V, 50Hz via input 5 core cable with 5 pin AC Plug, 32A
• 5 Pin AC Socket Output 16A
• Indicator: 3 pilot lamp for power line in three color coded. (Red, Yellow & Blue)
• Fuse Protection: Three Phase Output
• Connection: 3P+N+PE.
• Emergency Push Button Switch
• Keylock Switch
• START Push Button Switch
• STOP Push Button Switch
• o Protection: Earth leakage circuit breaker and miniature circuit breaker and AC Contactor Fixed Three Phase AC Power supply: 3 x 415V AC; 32A AC (Line To Line)
• Fixed Single Phase AC Power supply: 3 x 240V AC; 32A AC (Line To Neutral)

AC/DC Variable Power Supply

• Fixed Single Phase AC Power Supply: 240VAC, 50Hz
• Adjustable Single Phase AC/DC Power Supply (Simultaneously) :
• 0 ~ 250VAC, 0 ~ 12A AC
• 0 ~ 230VDC, 0 ~ 12A DC
• AC/DC Voltmeter & AC/DC Ammeters provided to indicate output volts and amps.

AC Socket Outlet

• 2 nos. 13A / 250V AC switched socket outlets.

The system designed to provide all fixed and variable AC and DC supplies which necessary in an electrical machines laboratory to perform the experiment required and work project.

The unit is contained in a metal housing with clear front panel identification and 4mm safety sockets that make its easy and safe.

**Three Phase Power Supply **

• Power Input: 3 Phase 240V/415V, 50Hz via input 5 core cable with 5 pin AC Plug, 32A.
• 5 Pin AC Socket 16A.
• Indicator: 3 pilot lamp for power line in three color coded. (Red, Yellow & Blue)
• Connection: 3P+N+PE.
• Protection: Earth Leakage Circuit Breaker 40A, 300mA and 20A Miniature Circuit Breaker.
• Complete with Emergency Switch, Keylock Switch, Start Switch, Stop Switch
• Fixed Three Phase AC Power supply: 3 x 415V AC; 13A AC (Line To Line)
• Fixed Single Phase AC Power supply: 3 x 240V AC; 13A AC (Line To Neutral)

AC/DC Variable Power Supply (Three Phase)

• Connection: 3P+N+PE.
• Protection: Miniature Circuit Breaker (3 Pole 20A)
• Three Phase Power Analysis Meter
• The instrument can measure Voltage, Current, Power Factor, Active Power, Reactive Power, Apparent Power And Energy consumption KWH, KVARH, Frequency.
• All parameters are true value (TRMS), input signal can be all kinds of wave.
• Display: Programmable setting, switching, circularly 3 lines LED / LCD display
• Adjustable AC / DC Power supply (Simultaneously) :
• Three Phase 0 ~ 450V AC; 5A AC (Line To Line)
• Single Phase: 0 ~ 240V AC; 5A AC (Line To Neutral)
• DC Power supply: 0 ~ 450V DC; 5A DC

AC/DC Variable Power Supply (Single Phase)

• Fixed Single Phase AC Power Supply: 240VAC, 50Hz
• Adjustable Single Phase AC/DC Power Supply (Simultaneously) :
• 0 ~ 250VAC, 0 ~ 5A AC
• 0 ~ 250VDC, 0 ~ 5A DC
• AC/DC Voltmeter (Digital LED Type) & AC/DC Ammeters (Digital LED Type) provided to indicate output volts and amps.
• AC Socket Outlet
• 2 nos. 13A / 250V AC switched socket outlets.

THREE PHASE POWER SUPPLY MODULE

Modular Design

• Power Input: 3 Phase 240V/415V, 50Hz via input 5 core cable with 5 pin AC Plug, 32A.
• Connection: 3P+N+PE.
• Protection: Earth leakage circuit breaker and miniature circuit breaker
• Complete with START and STOP Push Button
• Three Pole ON/OFF Selector Switch.
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets (Color Coded)

CURRENT LIMIT PROTECTION MODULE (3 UNITS)

Modular Design

• Connection: 3P+N+PE.
• Switch Load: 415Vac,10A
• Current Setting Range: 4 ~ 6.3A (Adjustable Current Limiting)
• Complete with START and STOP Push Button
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets (Color Coded)

CIRCUIT BREAKER (3 POLES) MODULE

Modular Design

• Connection: 3P+N+PE
• Three Pole Circuit Breaker
• Switch Load: 10A
• Unit Type : Panel H1
• Terminals: 4mm Safety Sockets (Color Coded)

PILOT LAMP MODULE

Modular Design

• 4 Units Pilot Lamp (Color: Red, Yellow, Blue & Green)
• Unit Type : Panel H1
• Terminals: 4mm Safety Socket

PUSH BUTTON SWITCH MODULE (I) (2 UNITS)

Modular Design

• Push Button Switch 1 (NCx1, NOx1)
• Push Button Switch 2 (NCx1, NOx1)
• Push Button Switch 3 (NCx2)
• Push Button Switch 4 (NOx2)
• Unit Type : Panel H1
• Terminals: 4mm Safety Socket

RELAY MODULE

Modular Design

• Category: Relay
• Contacts: 4 Sets N.C. & N.O.
• Voltage: 240VAC
• Unit Type : Panel H1
• Terminals: 4mm Safety Socket
• Unit Type : Panel H1

MAGNETIC CONTACTOR MODULE (3 UNITS)

Modular Design

• 3 Pole Magnetic Contactor
• Auxiliary Switch (NCx2, NOx2)
• Unit Type : Panel H1
• Terminals: 4mm Safety Socket

OFF DELAY TIMER MODULE

Modular Design

• Category: Protective Relay
• Product Type: Off Delay Timer
• Voltage: 240VAC
• Time Range: 30s
• Unit Type : Panel H1
• Terminals: 4mm Safety Socket

PARALLEL SYNCHRONIZATION BOARD

Modular design

• The synchronization board complete with six indicating lamps, three-line fuse protection and synchronizing switch terminated by color coded 4mm safety socket.
• Suitable for investigate the synchronism between AC Generators when are parallel connected or generator with main network.
• With six indicator lamps for qualitative indication of the phase relationship between mains and generator voltage (Bright-dark circuit)
• Unit Type : Panel H2

DOUBLE VOLTMETER

Modular design

• Double voltmeter 500VAC for Voltage comparison of the paralleling circuits
• Unit Type : Panel H1

SYNCHRONOSCOPE

Modular design

• With rotational indicator for phase comparison in synchronizing circuits with three phase or single phase AC line.
• Instrument: Air-core, electro-dynamic quotient movement.
• Unit Type : Panel H1

EXPERIMENTAL TABLE

• 5 Standard Desktop
• Dimension:
• Length : 1500mm
• Width : 800mm
• Height : 850mm
• 3 Layer Drawer (Optional)

DOUBLE FREQUENCY METER

Modular design

• Double frequency meter 45 55Hz, 500VAC for frequency comparison of the paralleling circuits
• Unit Type : Panel H1

PHASE SEQUENCE METER

Modular design

• The display of these meters indicates the order of phase sequence to which their terminals are designed.
• Instrument: Air-core, electro-dynamic quotient movement.
• Unit Type : Panel H1

EXPERIMENT PANEL FRAME

• Din Standard A4 With Two Shelves
• Side Frame: T Shape
• Dimension:
• Length : 1450mm
• Width : 20mm
• Height : 300mm

Features & Benefits

• Modularized design provides the most flexible requirement of this experimental equipment
• Each module panel height compatible with DIN A4 standard
• Using 4 mm safety sockets and plugs
• Each AC/DC power supply equipped with overload protection
• Adopting digitized and microprocessor-based measuring instruments to provide high-accuracy measurement
• AC & DC generator brake with constant speed / constant torque function, easy to operate