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Questions and Answers
What was the last production date for the motor drive units MD-I and MD-II?
What was the last production date for the motor drive units MD-I and MD-II?
What is the primary benefit emphasized about the TAPMOTION® MD-III?
What is the primary benefit emphasized about the TAPMOTION® MD-III?
When did the delivery of the new MD-III motor drive units start?
When did the delivery of the new MD-III motor drive units start?
What will happen to the supply of spare parts for MD-I and MD-II after January 2015?
What will happen to the supply of spare parts for MD-I and MD-II after January 2015?
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What is the timeline for ordering the new MD-III units?
What is the timeline for ordering the new MD-III units?
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What is the purpose of the anti-condensation heater in the motor drive unit MD-III?
What is the purpose of the anti-condensation heater in the motor drive unit MD-III?
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Which type of signal is converted in the TAPMOTION® MD-III system?
Which type of signal is converted in the TAPMOTION® MD-III system?
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Which statement about the position indicator modules is true?
Which statement about the position indicator modules is true?
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What feature does the bottom plate provide in the TAPMOTION® MD-III design?
What feature does the bottom plate provide in the TAPMOTION® MD-III design?
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What is the benefit of having easy extendable modules in the TAPMOTION® MD-III system?
What is the benefit of having easy extendable modules in the TAPMOTION® MD-III system?
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What feature ensures safe maintenance access to the terminal board?
What feature ensures safe maintenance access to the terminal board?
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What type of terminal technology is standard in the TAPMOTION® MD-III?
What type of terminal technology is standard in the TAPMOTION® MD-III?
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Which feature provides protection against accidental contact with electrical circuits?
Which feature provides protection against accidental contact with electrical circuits?
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How is the cable connection area designed in the TAPMOTION® MD-III?
How is the cable connection area designed in the TAPMOTION® MD-III?
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What is a benefit of using WAGO cage clamps in the TAPMOTION® MD-III?
What is a benefit of using WAGO cage clamps in the TAPMOTION® MD-III?
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What ensures the swing panel of the TAPMOTION® MD-III closes automatically?
What ensures the swing panel of the TAPMOTION® MD-III closes automatically?
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What type of terminal is offered as an optional feature in the TAPMOTION® MD-III?
What type of terminal is offered as an optional feature in the TAPMOTION® MD-III?
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Which aspect of the TAPMOTION® MD-III allows for a tidy appearance?
Which aspect of the TAPMOTION® MD-III allows for a tidy appearance?
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What is the purpose of the cam-operated, out-of-step contacts in the Motor Drive Unit MD-III?
What is the purpose of the cam-operated, out-of-step contacts in the Motor Drive Unit MD-III?
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Which contacts are activated in MR+ starting with tap change section 24?
Which contacts are activated in MR+ starting with tap change section 24?
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What function does the hand crank signaling contact provide?
What function does the hand crank signaling contact provide?
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What is indicated by the end position signaling contacts when activated?
What is indicated by the end position signaling contacts when activated?
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Which of the following correctly describes the activation of contact 155 in the Motor Drive Unit?
Which of the following correctly describes the activation of contact 155 in the Motor Drive Unit?
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What type of switch do all motor drives include according to the design?
What type of switch do all motor drives include according to the design?
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In the context of tap changers, what risk exists that the manufacturer has warned about?
In the context of tap changers, what risk exists that the manufacturer has warned about?
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Which contacts are activated in MR- starting with tap change section 24?
Which contacts are activated in MR- starting with tap change section 24?
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What type of additional window is available for the Motor Drive Unit MD-III?
What type of additional window is available for the Motor Drive Unit MD-III?
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Which feature increases operational security in the electrical circuit of the Motor Drive Unit MD-III?
Which feature increases operational security in the electrical circuit of the Motor Drive Unit MD-III?
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What is a distinguishing characteristic of the Motor Drive Unit MD-III regarding dimensions?
What is a distinguishing characteristic of the Motor Drive Unit MD-III regarding dimensions?
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Which component is replaced by contactors in the electrical circuit of the Motor Drive Unit MD-III?
Which component is replaced by contactors in the electrical circuit of the Motor Drive Unit MD-III?
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Which of the following is not an option mentioned for the Motor Drive Unit MD-III's mechanical design?
Which of the following is not an option mentioned for the Motor Drive Unit MD-III's mechanical design?
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How does the Motor Drive Unit MD-III indicate position without a step-by-step design?
How does the Motor Drive Unit MD-III indicate position without a step-by-step design?
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Which type of position indication module is specifically mentioned for the Motor Drive Unit MD-III?
Which type of position indication module is specifically mentioned for the Motor Drive Unit MD-III?
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Which of the following statements about the Motor Drive Unit MD-III's electrical circuit is true?
Which of the following statements about the Motor Drive Unit MD-III's electrical circuit is true?
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What type of special position indication requires an A/D converter in the MD-III?
What type of special position indication requires an A/D converter in the MD-III?
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What mechanism is used for protection against unintended passage of positions in the Motor Drive Unit MD-III?
What mechanism is used for protection against unintended passage of positions in the Motor Drive Unit MD-III?
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The TAPMOTION® MD-III utilizes WAGO cage clamps for quick and secure installation.
The TAPMOTION® MD-III utilizes WAGO cage clamps for quick and secure installation.
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The swing panel of the TAPMOTION® MD-III has no protection against electrical circuits.
The swing panel of the TAPMOTION® MD-III has no protection against electrical circuits.
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The TAPMOTION® MD-III includes both standard terminals for wire pin connections and screw type terminals for ring cable lugs.
The TAPMOTION® MD-III includes both standard terminals for wire pin connections and screw type terminals for ring cable lugs.
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There is no automatic closing feature in the swing panel of the TAPMOTION® MD-III.
There is no automatic closing feature in the swing panel of the TAPMOTION® MD-III.
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The terminal board in the TAPMOTION® MD-III is equipped with touch-proof design components.
The terminal board in the TAPMOTION® MD-III is equipped with touch-proof design components.
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Cable ducts in the TAPMOTION® MD-III are for aesthetic purposes only and do not serve a functional role.
Cable ducts in the TAPMOTION® MD-III are for aesthetic purposes only and do not serve a functional role.
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Wago terminals in the TAPMOTION® MD-III are a standard feature, while screw type terminals are an option.
Wago terminals in the TAPMOTION® MD-III are a standard feature, while screw type terminals are an option.
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The touch proof design of the TAPMOTION® MD-III is primarily for visual appeal.
The touch proof design of the TAPMOTION® MD-III is primarily for visual appeal.
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The Local/Remote/Auto switch can integrate a voltage regulator in its Auto position.
The Local/Remote/Auto switch can integrate a voltage regulator in its Auto position.
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It is recommended to always turn off the heating to prevent water condensation on the motor drive MD-III.
It is recommended to always turn off the heating to prevent water condensation on the motor drive MD-III.
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The main switch of the motor drive unit MD-III should be used for emergency shutoff.
The main switch of the motor drive unit MD-III should be used for emergency shutoff.
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Socket outlets on the motor drive unit are essential for normal operation.
Socket outlets on the motor drive unit are essential for normal operation.
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A potential-free signaling contact is available upon customer request for the heating circuit.
A potential-free signaling contact is available upon customer request for the heating circuit.
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A customer can request a 30mA/10A ground leakage circuit breaker instead of a 10mA/10A version.
A customer can request a 30mA/10A ground leakage circuit breaker instead of a 10mA/10A version.
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The Motor Drive Unit MD-III features a window in the left door for visibility of VIM controls.
The Motor Drive Unit MD-III features a window in the left door for visibility of VIM controls.
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The MD-III motor drive unit includes socket outlets that are specifically for 110V applications.
The MD-III motor drive unit includes socket outlets that are specifically for 110V applications.
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The electrical circuit in the Motor Drive Unit MD-III includes the replacement of relays by diodes.
The electrical circuit in the Motor Drive Unit MD-III includes the replacement of relays by diodes.
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There are limits on the number of potential-free signaling contacts available, capped at four.
There are limits on the number of potential-free signaling contacts available, capped at four.
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The Motor Drive Unit MD-III is designed to have identical mounting points to both MD-I and MD-II.
The Motor Drive Unit MD-III is designed to have identical mounting points to both MD-I and MD-II.
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The Motor Drive Unit MD-III utilizes a simple wiring method that lacks step-by-step design.
The Motor Drive Unit MD-III utilizes a simple wiring method that lacks step-by-step design.
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Position indication modules in the Motor Drive Unit MD-III are exclusively based on analog technology.
Position indication modules in the Motor Drive Unit MD-III are exclusively based on analog technology.
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Standard options for the Motor Drive Unit MD-III include a provision for TC150.
Standard options for the Motor Drive Unit MD-III include a provision for TC150.
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Position indication can involve special codes that necessitate an A/D converter in the Motor Drive Unit MD-III.
Position indication can involve special codes that necessitate an A/D converter in the Motor Drive Unit MD-III.
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The Motor Drive Unit MD-III's electrical circuit guarantees unintended operation through non-mechanical means.
The Motor Drive Unit MD-III's electrical circuit guarantees unintended operation through non-mechanical means.
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The Motor Drive Unit MD-III allows for a one-size-fits-all compatibility with existing RMV's.
The Motor Drive Unit MD-III allows for a one-size-fits-all compatibility with existing RMV's.
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An additional window in the cover plate of the transmission gear is not an option for the Motor Drive Unit MD-III.
An additional window in the cover plate of the transmission gear is not an option for the Motor Drive Unit MD-III.
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The maximum number of cam switches that can be installed in the MD-III is 12.
The maximum number of cam switches that can be installed in the MD-III is 12.
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10 A plates require less space compared to 1 A plates in the MD-III.
10 A plates require less space compared to 1 A plates in the MD-III.
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Directional cam switches change their state in both directions during operation.
Directional cam switches change their state in both directions during operation.
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Non-directional cam switches return to their original position at the end of a position change.
Non-directional cam switches return to their original position at the end of a position change.
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For the MD-III, the maximum quantity of position transmitter plates with a resolver is 4.
For the MD-III, the maximum quantity of position transmitter plates with a resolver is 4.
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The switching procedure for non-directional cam switches is always asymmetric.
The switching procedure for non-directional cam switches is always asymmetric.
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Position signals in MD-III are reported regardless of voltage by the cam switches.
Position signals in MD-III are reported regardless of voltage by the cam switches.
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At the start of a position change, both directional and non-directional cam switches are activated.
At the start of a position change, both directional and non-directional cam switches are activated.
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The over voltage relay in the control circuit can detect an under voltage failure.
The over voltage relay in the control circuit can detect an under voltage failure.
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Coupling relays are mandatory for using a different pulse voltage than the control voltage.
Coupling relays are mandatory for using a different pulse voltage than the control voltage.
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A message is generated if the motor drive run time exceeds 5 seconds.
A message is generated if the motor drive run time exceeds 5 seconds.
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The incomplete circuit measures the time necessary for a motor drive to complete a position change.
The incomplete circuit measures the time necessary for a motor drive to complete a position change.
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Two potential-free signaling contacts are optional and usually not included in the unit.
Two potential-free signaling contacts are optional and usually not included in the unit.
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Coupling relays only function with AC voltage for raise/lower operation.
Coupling relays only function with AC voltage for raise/lower operation.
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The time measured for a motor drive run is exactly 3 seconds with no tolerance.
The time measured for a motor drive run is exactly 3 seconds with no tolerance.
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The usage of an incomplete circuit is solely for signaling purposes and does not affect the operational state.
The usage of an incomplete circuit is solely for signaling purposes and does not affect the operational state.
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Study Notes
TAPMOTION MD-III Overview
- Introducing the TAPMOTION® MD-III motor drive unit, a new concept for moving Load Tap Changers (LTCs).
- Built on 25 years of experience with vacuum reactor LTCs.
- Development timeline includes the MD-I, MD-II, and now MD-III.
Transition and Production
- Production of MD-I and MD-II continues until December 2014 with MD-III launched for orders starting March 1, 2014.
- Discontinuation of MD-I and MD-II production slated for January 2015 after a six-month transition.
- Spare parts will remain available for MD-I and MD-II; complete units can be ordered only in emergencies post-discontinuation.
Key Features of MD-III
- Combines knowledge from over 100,000 motor drive units in its design for enhanced functionality.
- Equipped with a non-resettable operation counter and tap change indicator.
Modular Concept Design
- Features a separated, touch-proof terminal board with neat cable ducts for easy connections.
- WAGO cage clamps used for quick installation and safety, ensuring secure connections without touching live parts.
- Swing panel allows easy access with protective functionalities.
Position Indicator and Signal Modules
- Offers extendable modules for remote position indication including various resistor types.
- Analog signal output of 4…20mA, facilitating digital to analog signal conversion with ease.
Anti-Condensation Features
- Includes a permanent heater to prevent internal condensation by maintaining higher internal temperatures.
- Equipped with a thermostat-controlled additional heater suitable for arctic conditions.
Compatibility and Assembly
- Designed for direct mounting below LTCs with a “one design fits all” approach ensuring compatibility with existing RMVs.
- Identical mounting points to MD-I & MD-II assist in straightforward transition.
Electrical Circuit Enhancements
- Replaces relays with contactors to improve operational security through self-monitoring.
- Includes protections against unintended position changes with designated T-point functions.
- Advanced wiring supports numerous types of position indication modules and resistor configurations.
Contact and Signal Features
- Features out-of-step contacts and signaling for end positions to ensure operational accuracy.
- Hand crank signaling contacts facilitate manual control for operators with built-in alerts.
Switches and Control
- Each motor drive comes with a raise/lower selector switch alongside options for additional control switches based on client needs.
- The design encourages safety by minimizing the potential for operational mix-ups.
Dimensions and Options
- Compatible assembly dimensions allow for simple integration into existing systems.
- Various options available for mechanical design, electrical circuits, and auxiliary equipment to meet customer specifications.
These notes highlight the essential components and features of the TAPMOTION MD-III, capturing its innovations and operational capabilities for efficient LTC movement.
TapMotion® MD-III Overview
- Non-resettable operation counter and a change indicator for tap position in progress.
- New modular design enhances functionality and ease of use.
Terminal Board Features
- Touch-proof and separated areas for safety within the housing.
- Cable ducts maintain organization and facilitate easy connections.
- WAGO cage clamps support quick installation and ensure touch-proof design.
- Straightforward access to essential connection points.
Terminal Blocks
- Standard WAGO cage clamp technology and optional UK5N screw type terminals.
- Support for wire pin connections and ring cable lugs.
- All terminals designed for easy connection and secured against accidental touching.
Swing Panel Benefits
- Quick access to terminals through a snap lock mechanism.
- Direct touch protection applied to all electrical circuits.
- Automatic closure feature for added safety.
Motor Drive Unit MD-III Assembly
- Compatible mounting with existing RMV units; "one design fits all."
- Ground level mounting for practical installation.
Dimensions and Design
- Identical mounting dimensions to previous models (MD-I & MD-II).
- Options for additional features such as extra viewing windows.
Standards and Options
- Diverse options for mechanical design and electrical components, including heaters and control circuits.
- Customization for auxiliary and supply circuits.
Electrical Circuit Innovations
- Simplification through replacement of relays with contactors.
- Enhanced operational security with the self-monitoring of electrical components like micro switches and contactors.
Position Indication Systems
- Multiple position indication modules available including resistor type and rotary transmitters.
- Special position transmitter modules require A/D converters for custom designations.
Cam Switches
- Mechanically activated cam switches report the current positional state reliably.
- Options for directional and non-directional switches, affecting operation during position changes.
Switch Types
- Local/Remote/Auto switch allows for integration with voltage regulators.
- Heater switch protects against water condensation; vital for equipment longevity.
- Main switch controls various current circuits; not intended for emergency shutdowns.
Power Outlets
- Socket outlets primarily serve maintenance work; equipped with ground leakage circuit breakers for safety.
- Customizable options include different types of breakers and specifications.
Auxiliary Circuits
- Over-voltage and under-voltage relay contacts included in control circuits to safeguard operations.
- Coupling relays allow for decoupling control signals, broadening operational flexibility.
Safety Features
- Incomplete circuit monitoring measures time for motor operation during position changes to prevent malfunctions.
- Potential-free signaling contacts available for various circuits, enhancing control options.
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Description
Explore the innovative features of the TAPMOTION® MD-III motor drive unit. With 25 years of expertise in vacuum reactor LTCs, this new design marks a significant advancement in motor drive technology. Understand how the MD-III fits into the evolution of the TAPMOTION series.
