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What is the purpose of the document provided by Maschinenfabrik Reinhausen?
What is the purpose of the document provided by Maschinenfabrik Reinhausen?
What type of equipment is discussed in the document?
What type of equipment is discussed in the document?
What can be inferred about the communication methods used by Maschinenfabrik Reinhausen?
What can be inferred about the communication methods used by Maschinenfabrik Reinhausen?
Which section of the document likely contains specific features and capabilities of the on-load tap changer?
Which section of the document likely contains specific features and capabilities of the on-load tap changer?
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What type of information would you expect to find in the 'Accessorial Equipment' section?
What type of information would you expect to find in the 'Accessorial Equipment' section?
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Which of the following best describes the format of the document?
Which of the following best describes the format of the document?
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Which page likely includes unique designs tailored to specific customer needs?
Which page likely includes unique designs tailored to specific customer needs?
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What is the likely primary audience for this document?
What is the likely primary audience for this document?
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What defines the peak value of the highest amplitude of current?
What defines the peak value of the highest amplitude of current?
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What is the time period associated with the r.m.s. value as noted?
What is the time period associated with the r.m.s. value as noted?
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What is mandatory if the operating voltage exceeds 92 kV?
What is mandatory if the operating voltage exceeds 92 kV?
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Which component is mentioned as a necessity in relation to the tap changer?
Which component is mentioned as a necessity in relation to the tap changer?
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In what context is the r.m.s. value mentioned?
In what context is the r.m.s. value mentioned?
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What does the note imply about the operating voltage and its impact on equipment?
What does the note imply about the operating voltage and its impact on equipment?
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What is the oil displacement volume over selector for the tap changer type H III 400 D - 1 2 3?
What is the oil displacement volume over selector for the tap changer type H III 400 D - 1 2 3?
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For which tap changer type is the test pressure stated as 0.6 bar?
For which tap changer type is the test pressure stated as 0.6 bar?
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What is the weight of the oil filling quantity V g and min. without change-over selector for the H III 400 D - 1 4 5 type?
What is the weight of the oil filling quantity V g and min. without change-over selector for the H III 400 D - 1 4 5 type?
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What is the minimum oil filling quantity V a with change-over selector for the tap changer type H II 400Y?
What is the minimum oil filling quantity V a with change-over selector for the tap changer type H II 400Y?
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What is a key condition for using a stationary oil filter unit with combined filter insert?
What is a key condition for using a stationary oil filter unit with combined filter insert?
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What is the oil displacement volume with change-over selector for the tap changer type H III 400 D - 1 2 3?
What is the oil displacement volume with change-over selector for the tap changer type H III 400 D - 1 2 3?
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What is the maximum pressure that the compartment can handle in terms of continuous service pressure difference?
What is the maximum pressure that the compartment can handle in terms of continuous service pressure difference?
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Which tap changer type has the highest approximate weight?
Which tap changer type has the highest approximate weight?
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What primarily determines the insulation of the tap changer?
What primarily determines the insulation of the tap changer?
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Which factor influences the dielectric strength of the internal tap changer insulation?
Which factor influences the dielectric strength of the internal tap changer insulation?
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During which test is the stress on the internal tap changer insulation particularly significant?
During which test is the stress on the internal tap changer insulation particularly significant?
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What is the rated lightning impulse withstand voltage for a tap changer rated at 145 kV?
What is the rated lightning impulse withstand voltage for a tap changer rated at 145 kV?
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What must be ensured regarding the voltage stress of the transformer winding?
What must be ensured regarding the voltage stress of the transformer winding?
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What is the rated power-frequency withstand voltage for a tap changer rated at 76 kV?
What is the rated power-frequency withstand voltage for a tap changer rated at 76 kV?
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Which of the following describes the insulation to ground?
Which of the following describes the insulation to ground?
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At what temperature is the rated withstand voltage applicable for insulation materials in oil?
At what temperature is the rated withstand voltage applicable for insulation materials in oil?
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What is the minimum number of steps indicated for one of the tap changer configurations?
What is the minimum number of steps indicated for one of the tap changer configurations?
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Which of the following statements is true regarding the connection diagram for tap changers?
Which of the following statements is true regarding the connection diagram for tap changers?
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What is the significance of the labeling in the tap changer configuration?
What is the significance of the labeling in the tap changer configuration?
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Which voltage levels are mentioned for the described tap changers?
Which voltage levels are mentioned for the described tap changers?
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What can be inferred from the use of coarse tap windings in the configurations?
What can be inferred from the use of coarse tap windings in the configurations?
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How many steps can variables in the tap changer configuration accommodate?
How many steps can variables in the tap changer configuration accommodate?
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What does the term 'binding' imply in the context of connection diagrams for tap changers?
What does the term 'binding' imply in the context of connection diagrams for tap changers?
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What is a crucial requirement for the connection of a tap changer to a transformer?
What is a crucial requirement for the connection of a tap changer to a transformer?
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The connection diagram provided for each tap changer is non-binding for the connection to the transformer.
The connection diagram provided for each tap changer is non-binding for the connection to the transformer.
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The tap changer type H III 400 D - 123 is associated with a voltage of 76 kV.
The tap changer type H III 400 D - 123 is associated with a voltage of 76 kV.
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Similar basic connection diagrams can be realized for configurations using a fine tap winding.
Similar basic connection diagrams can be realized for configurations using a fine tap winding.
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The maximum pressure noted for the compartments relates to the continuous service pressure difference.
The maximum pressure noted for the compartments relates to the continuous service pressure difference.
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The inscription on each tap changer terminal is optional for proper function.
The inscription on each tap changer terminal is optional for proper function.
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The tap change dimensions do not comply with any standard designations.
The tap change dimensions do not comply with any standard designations.
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For the tap changer configurations, at least 10 steps are always available.
For the tap changer configurations, at least 10 steps are always available.
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The tap changer configuration includes a requirement for insulation strength consideration.
The tap changer configuration includes a requirement for insulation strength consideration.
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The maximum voltage listed for the tap changer type 14273 G is 1760V.
The maximum voltage listed for the tap changer type 14273 G is 1760V.
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The tap changer type 14140 has an operating voltage of 1380V.
The tap changer type 14140 has an operating voltage of 1380V.
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Tap changer type 12233 W operates at a voltage of 1800V.
Tap changer type 12233 W operates at a voltage of 1800V.
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The tap changer type 14131 W is rated for an operating voltage of 1500V.
The tap changer type 14131 W is rated for an operating voltage of 1500V.
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Tap changer type 12231 G shows a maximum voltage of 1640V.
Tap changer type 12231 G shows a maximum voltage of 1640V.
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The 14131 W tap changer has a higher voltage rating than the 14271 W tap changer.
The 14131 W tap changer has a higher voltage rating than the 14271 W tap changer.
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Tap changer type 12120 shows a maximum voltage rating of 1600V.
Tap changer type 12120 shows a maximum voltage rating of 1600V.
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The tap changer type 14273 W has a maximum operating voltage of 1500V.
The tap changer type 14273 W has a maximum operating voltage of 1500V.
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The peak value of the highest amplitude of current is referred to as the first amplitude.
The peak value of the highest amplitude of current is referred to as the first amplitude.
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The rated switching capacity for H I l 400 Y is 320 kVA.
The rated switching capacity for H I l 400 Y is 320 kVA.
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The breaking capacity must equal at least three times the rated switching capacity.
The breaking capacity must equal at least three times the rated switching capacity.
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A stationary oil filter unit is required if the operating voltage exceeds 100 kV between phases.
A stationary oil filter unit is required if the operating voltage exceeds 100 kV between phases.
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The maximum rated step voltage U; for the tap changer H I I 400D is 2000 V.
The maximum rated step voltage U; for the tap changer H I I 400D is 2000 V.
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H III 400 D - 145 has 10 contacts.
H III 400 D - 145 has 10 contacts.
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The estimated mean contact life of selector switch arcing contacts is independent of the relative load.
The estimated mean contact life of selector switch arcing contacts is independent of the relative load.
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The r.m.s. value is determined over a period of 5 seconds.
The r.m.s. value is determined over a period of 5 seconds.
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The tap changer H I l 400D - 123 has a rated through-current of 400 A.
The tap changer H I l 400D - 123 has a rated through-current of 400 A.
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Contact life can be accurately predicted without considering the prevailing operating conditions.
Contact life can be accurately predicted without considering the prevailing operating conditions.
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The maximum voltage specified for the tap changer type H III 400 D - 1 2 3 is 92 kV.
The maximum voltage specified for the tap changer type H III 400 D - 1 2 3 is 92 kV.
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If the oil filter unit has a combined filter insert, it implies a higher filtration efficiency.
If the oil filter unit has a combined filter insert, it implies a higher filtration efficiency.
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The maximum switching capacity refers solely to the through-current at the relevant step voltage.
The maximum switching capacity refers solely to the through-current at the relevant step voltage.
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The rated switching capacity for the H III 400 D - 1 2 3 is 600 kVA.
The rated switching capacity for the H III 400 D - 1 2 3 is 600 kVA.
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The estimated mean contact life can exceed 500,000 operations under average load conditions.
The estimated mean contact life can exceed 500,000 operations under average load conditions.
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The obligatory use of a stationary oil filter is dependent on the design of the tap changer.
The obligatory use of a stationary oil filter is dependent on the design of the tap changer.
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The tap changer H II 400 Y has a rated step voltage (U;) of 1500 V.
The tap changer H II 400 Y has a rated step voltage (U;) of 1500 V.
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According to the data, tap changers have different maximum rated step voltages based on their configurations.
According to the data, tap changers have different maximum rated step voltages based on their configurations.
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As per the IEC standards, the breaking capacity of a device is less important than its rated switching capacity.
As per the IEC standards, the breaking capacity of a device is less important than its rated switching capacity.
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The H III 400 Y model features a higher rated switching capacity than the H I l 400D model.
The H III 400 Y model features a higher rated switching capacity than the H I l 400D model.
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Study Notes
Technical Overview
- Document pertains to the On-Load Tap Changer Type H manufactured by Maschinenfabrik Reinhausen.
- Contact specifications include variants such as 12 and 14 contacts, with weight ranging from approximately 190 kg to 265 kg.
Operating Conditions
- Oil compartments are pressure-proof up to 0.3 bar with a test pressure of 0.6 bar and vacuum-proof for drying processes.
- Tap changers must use a stationary oil filter if operating voltage between phases exceeds 92 kV.
Design Characteristics
- Tap changer types specified include H I I 400Y, H I I 400 D, H III 400 D - 1 2 3, and H III 400 D - 1 4 5.
- Oil displacement volume varies with options of either a selector or without, ranging from 230 dm³ to 405 dm³.
Insulation Standards
- Insulation resilience is determined by rated withstand voltages applicable to both ground and internal insulation.
- Key voltages include rated lightning impulse withstand voltages from 200 kV to 650 kV and rated power-frequency withstand voltages from 70 kV to 275 kV.
Configuration and Connection
- A mandatory connection diagram is provided for each tap changer for proper installation with transformers.
- Specific voltage stress considerations are crucial for selecting appropriate tap changers to ensure compliance with prescribed voltage limits.
Additional Notes
- Acknowledgment of specific operational conditions is necessary during installation, particularly during stress tests on transformer windings.
- Insulation measurements were based on new, well-dried insulating materials immersed in treated transformer oil at a nominal temperature of around 20°C.
Tap Changer Specifications
- Various tap changers are listed: H I 400 Y, H II 400 D (123), H III 400 D (145), and their rated currents and step voltages vary.
- Each type features a specific number of contacts: H I 400 Y has 17, H II 400 D has 10, while H III models have 12 and 14 contacts respectively.
- Rated through-currents (I) are 400A or 350A, while rated step voltages (Ui) range from 800V to 2000V.
Rated Capacities
- Switching capacities (PgN) for the tap changers vary, with values such as 320 kVA for H I 400 Y and 600 kVA for H III 400 D (145).
- The maximum rated switching capacity must be at least double the rated switching capacity to ensure safe operation under load conditions.
Maximum Step Voltages
- Maximum permissible step voltages for OLTCs (on-load tap changers) are defined, with values such as 1640V, 1800V, and 1380V across different designs.
- These values are critical for maintaining operational safety and performance.
Contact Life and Maintenance
- Estimated mean contact life of selector switch arcing contacts is provided, influenced by operational load. Varies with load conditions and requires adherence to inspection instructions.
- The life indicators depend on the number of operations and actual through-current compared to the maximum rated current.
Designation and Diagrams
- Connection diagrams for each tap changer are mandatory, ensuring correct installations for transformers.
- Basic connection diagrams for different tap changers can accommodate a range of step adjustments, identified by specific designations.
Additional Requirements
- When operating voltages exceed 92 kV, a stationary oil filter unit with a combined filter insert is required to manage and mitigate potential risks.
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Description
This quiz covers the technical specifications and design characteristics of the On-Load Tap Changer Type H by Maschinenfabrik Reinhausen. It includes details on operating conditions, insulation standards, and variants of contact specifications.
