Podcast
Questions and Answers
Which relay type is categorized as a Metal to Carbon Live Relay for AC immunized applications?
Which relay type is categorized as a Metal to Carbon Live Relay for AC immunized applications?
- QBAI Relay (correct)
- QT2 Relay
- WKR-1 Relay
- Q1-1 Relay (correct)
What is a characteristic of the Minor K-50 relays in terms of interlocking?
What is a characteristic of the Minor K-50 relays in terms of interlocking?
- Can function without any interlocks
- Replaces one interlock with one capacitor
- Replaces two neutral interlocks (correct)
- Replaces one neutral with one resister (correct)
What is the voltage drop requirement across R18 R2 for the ECRs Relay?
What is the voltage drop requirement across R18 R2 for the ECRs Relay?
- Less than 5 V @ 125 mA
- Less than 10 V @ 125 mA (correct)
- Equal to 10 V @ 125 mA
- Less than 15 V @ 250 mA
Which relay provides a time duration of 10 seconds for point operation?
Which relay provides a time duration of 10 seconds for point operation?
What type of relays are classified as Non AC immunized Neutral Relays?
What type of relays are classified as Non AC immunized Neutral Relays?
Flashcards
Q-Series Relay
Q-Series Relay
A type of relay used in railway signaling that is designed to handle heavy current loads and provides a robust and reliable connection.
AC Immunized Q-Series Relay
AC Immunized Q-Series Relay
A type of Q-Series relay that is specifically designed to handle alternating current (AC) signals.
K-50 Major Relay
K-50 Major Relay
A type of Siemens relay that is commonly used in RRT (Route Relay Table) systems.
Siemens Group Relay
Siemens Group Relay
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Siemens Double Coil Relay
Siemens Double Coil Relay
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Study Notes
Relays
-
Series Relays:
- Metal to Carbon Live Relay (Non-AC, Immunized)
- Types: 6953, B3, QNN1
- Metal to Carbon Live Relay (AC Immunized)
- AC Immunized DC Neutral Line Relay
- QNA-1 Relay, QOB-1 Relay
- QBCA-1 Relay, QSPA-1 Relay, QJ-1 Relay
- Track Relay
- QT2, QTA2
- Timer Relay
- DC Thermal (CQT1), Electronic
- Metal to Carbon Live Relay (Non-AC, Immunized)
-
Siemens Metal to Metal Relays:
- K-50 Relays
- Group Relays
- Non-AC Immunized Relays
Interlocked Relays
-
AC Immunized Relays:
- Interlocked Relays (both top & bottom)
- Types: both top and bottom configurations
-
Metal to Metal Relays:
- Double coil relays used as ZIWRI, ZINWR, ZIRWR, WKR3, Z1WR, W2R
-
Universal ECR:
- 3F/3B relay (83.12Ω), two configurations
- WKR1, SF/3B (1840 Ω)
- WKR2, SF/3B (1840 Ω)
- 3F/3B relay (83.12Ω), two configurations
-
Non-AC Immunized Neutral Relays:
- UF/UB, SF18B, 6F12B (1260 Ω for UF/UB; 1840 Ω for SF12B; 1840Ω for 6F12B)
- Interlocked Relay configurations: using SF/3B, 6F/2B, and 6152
- Non-AC Immunized Relay (top only = 1840Ω; bottom only = 1260Ω)
QBAT Relay
- Pick up voltage = 1.75V
- Pick up current = 175 mA
- Permanent magnet with copper slug core
- One Core- 2F/2B used upto 750 m
Thermal Relay
- DC biased relays
- Siemens motorized clock work relay
- Electronic type relay
Additional Relay Types
- QECX-61 (AC relay)
- Pick-up current: ~ 108 mA
- Drop-out current: ~72 mA
- Withstand continuous currents ~250 mA
- Has a 4F/UB(A to D) dome
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