Questions and Answers
What does RVP stand for?
What is the function of the T type relay?
What does US represent?
Which relay is known as the switch repeater relay?
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What is the role of RFK in the relay system?
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Which relay refers to the lunar light control?
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What does TB represent?
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Which relay is associated with speed indicator light control?
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What does the acronym APB stand for?
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Which designation corresponds to a relay used as a substitute for a lever in the normal position?
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What is the meaning of the prefix 'CX'?
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What function does the C24 designation have?
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What does the acronym GD denote?
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Which option describes the CH designation?
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What purpose does the CBX24 designation serve?
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What does the term 'OS' stand for in this context?
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Study Notes
Fuse Designations and Relay Functions
- Fuse designations are represented by letters: A, B, C, D, and others, indicating different types of fuses.
- Specific relays and their purposes include:
- APB: Low air pressure alarm push button.
- AS: Approach locking stick relay facilitating control mechanisms.
- CC: Switch circuit control ensuring circuits function correctly.
- CO: Call on signal control relay for communication.
- COS: Operational control stick relay for call functions.
Energy Prefixes and Control Systems
- High and low voltage energy prefixes include:
- BH: Positive DC energy (high voltage).
- BX: Positive AC energy.
- CH: Negative DC energy.
- CX: Negative AC energy.
- Common voltage references:
- C24: 24 volt DC common.
- CBX24: 24 volt AC flashing light energy.
- CX24: 24 volt AC common.
Signal Light and Home Control Systems
- Various signal light controls include:
- G: General signal light control.
- GD: Ground detector for ensuring safety.
- H: Home control relay for local operations.
- HG: Caution signal light control for alerts.
- HV: Home signal clear stop relay for operational signaling.
Switching and Control Relays
- Control systems utilize different relays:
- LS: Switch locking stick relay to maintain safety.
- NWC: Normal switch correspondence relay for standard operations.
- RWP: Reverse switch repeater relay for alternate signaling.
- OS: Overload stick relay to prevent system damage.
Track and Train Control
- Components for track management include:
- T: Track relay for detecting conditions of the rail.
- TP: Track repeater relay for system diagnostics.
- TOH: Train order home control relay for train operations.
- TT: Track transformer for energy distribution across the track.
Time and Speed Management
- Several relays facilitate timing and speed indications:
- U: Time element relay for release mechanisms.
- UG: Speed indicator light control for train velocity monitoring.
- UR: Time element relay for operational timing.
Power and Battery Systems
- Power management includes:
- LB: 14 volt DC line battery for power supply.
- VB: 14 volt DC local battery for localized power.
- TB: 14 volt DC tower battery for operational towers.
Miscellaneous Functions
- Unique components serve specialized functions:
- WZ: Switch control relay for interlocking systems.
- X: Bell for signaling.
- Z: Contact rail indicating relay for safety assurance.
- XS: Exit push button stick repeater relay for exit mechanisms.
This outline summarizes various designations, control systems, and functions relevant to relay operations and energy management in systems.
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Description
Test your knowledge on various electrical designations and control relays with this quiz! You'll encounter terms related to fuse designations, alarms, and relay controls. See how familiar you are with these essential electrical concepts.
