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List of Device Numbers
1 Q* b' O3 ^- \Click to learn more...7 \) I7 {4 b7 \- k/ m
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* 1 - Master Element
2 d1 L; R9 x' g+ B- b$ i * 2 - Time Delay Starting or Closing Relay
3 G$ \3 e+ M# b8 q9 D0 Z4 ~/ G * 3 - Checking or Interlocking Relay, E+ f, ~- c, v' T7 H. m
* 4 - Master Contactor
$ h' B% M6 \; l; m% n$ ] * 5 - Stopping Device
5 l8 r. A) J. @: d2 G% a/ Y ]) N. t * 6 - Starting Circuit Breaker
+ y# G3 X0 M6 c- h: ] * 7 - Anode Circuit Breaker$ r: I. x) G9 t! m- e
* 8 - Control Power Disconnecting Device+ T; W* s' L8 h
* 9 - Reversing Device
9 }' ^7 A( x; w. n" Q, n+ C0 X * 10 - Unit Sequence Switch- v' T- j. V9 r" q! v
* 12 - Overspeed Device
- D1 ^+ ?7 m! W0 \4 K3 f% L8 \+ _ * 13 - Synchronous-speed Device- p/ y6 u- c3 [8 R+ x
* 14 - Underspeed Device
: m' a h' y9 U) ?$ A2 j- Z1 t7 S * 15 - Speed - or Frequency-Matching Device
# {3 n; x5 F0 u$ T2 ? r * 21 - Distance Relay; k- @3 A" e+ }/ `9 u# F
* 23 - Temperature Control Device& S. F0 G7 ?; S/ `
* 25 - Synchronizing or Synchronism-Check Device
! I9 F' E/ t c4 _4 e- {4 d * 26 - Apparatus Thermal Device
" ]: y2 A' c1 o( \% ^% F * 27 - Undervoltage Relay
; S- \( a$ q8 B3 |) b, i * 29 - Isolating Contactor. m* i ]. z/ g/ \) T
* 30 - Annunciator Relay
' f! c* |0 h* v9 a# ~2 x( p * 32 - Directional Power Relay
- @' w! H3 c* S+ x9 C * 36 - Polarity or Polarizing Voltage Devices
" C7 e! O @: x5 l+ s4 O * 37 - Undercurrent or Underpower Relay+ ]# f4 ?6 Q' _7 c$ F! O7 b
* 38 - Bearing Protective Device% y3 t6 I9 ^# b- y) r: \0 ]
* 39 - Mechanical Conduction Monitor" A8 Y. o; b" @! m4 [, q& q# D
* 40 - Field Relay9 R7 g; v+ q% x6 k. b0 Y) Q
* 41 - Field Circuit Breaker1 a/ S; a. R2 G
* 42 - Running Circuit Breaker% z' a, {1 \# Y' F7 a
* 43 - Manual Transfer or Selector Device
# J/ t$ M: Q! `0 h/ A * 46 - Reverse-phase or Phase-Balance Relay
# s9 ~% ?& u9 x g; z * 47 - Phase-Sequence Voltage Relay, _0 c0 L# W) |
* 48 - Incomplete-Sequence Relay$ g2 y( N7 R9 ^# D+ j: U8 ~
* 49 - Machine or Transformer Thermal Relay- ]7 W3 ]9 a0 \/ q5 X; T
* 50 - Instantaneous Overcurrent
0 a; i% q, g4 Y1 t * 51 - AC Time Overcurrent Relay/ u, Z) F" m* _6 w) H* c: D2 R. n) B$ U
* 52 - AC Circuit Breaker& D; O; @+ M; \9 W5 K: o( h2 p
* 53 - Exciter or DC Generator Relay
! I, b8 d: h- I5 i4 I * 54 - High-Speed DC Circuit Breaker$ V3 m! v/ _/ n! p. |
* 55 - Power Factor Relay- O$ c E' r o8 W* a9 d! g/ g) S
* 56 - Field Application Relay
: K) K8 ^# H. x- G% h * 59 - Overvoltage Relay
8 Z) n+ A; ~2 f# W8 K$ t * 60 - Voltage or Current Balance Relay
+ o: ~9 D2 j, D7 U+ K' B * 61 - Machine Split Phase Current Balance2 {, C2 X9 z9 X
* 62 - Time-Delay Stopping or Opening Relay4 i1 k2 }1 R$ ?
* 63 - Pressure Switch2 T4 e: U4 y7 e& h+ Q$ F: K4 ?
* 64 - Ground Detector Relay6 F1 Y- |" I# U
* 65 - Governor
- }* _ s0 a6 A$ s * 66 - Starts per Hour
) T3 v6 X% Q U8 v. D& D9 e) m * 67 - AC Directional Overcurrent Relay' B, H5 i" u1 P8 |: [/ ~
* 68 - Blocking Relay
$ A% u& ~" d+ d( j0 |, j5 I4 c4 J* S * 69 - Permissive Control Device3 V# Z" p2 K* ?7 S. H2 c c
* 71 - Level Switch
0 |/ ^0 w6 `( ?( O, G * 72 - DC Circuit Breaker; o3 V+ T5 T( ~
* 74 - Alarm Relay8 G% l# v' l) w" I4 Z
* 75 - Position Changing Mechanism* ^1 L7 l- y }! U4 J2 F G9 m
* 76 - DC Overcurrent Relay
: T4 X' g, F& Z * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
: A! _7 L; E1 Z+ f * 79 - AC-Reclosing Relay
5 ?* ^ J6 G; d t3 s" o& Z/ V * 81 - Frequency Relay& C1 c8 [$ h4 s6 J
* 83 - Automatic Selective Control or Transfer Relay5 q M& s% x. S' {) b/ w
* 84 - Operating Mechanism
8 z1 }; H1 ?0 ? Z3 V0 a/ G( N * 85 - Carrier or Pilot-Wire Receiver Relay
) ~' P4 {+ D8 V+ \& [* w+ U * 86 - Lockout Relay
0 } D9 r/ N, B& T3 ? * 87 - Differential Protective Relay. E& D; d' f- d* u; [
* 89 - Line Switch
0 z0 F/ h6 y$ x7 D$ D8 E: I * 90 - Regulating Device
9 Q+ f) l8 g9 n# K+ J6 V * 91 - Voltage Directional Relay+ O3 N+ u6 E) ^0 B3 |% }! @) p
* 92 - Voltage and Power Directional Relay9 b2 G7 N* r. C O b! S
* 94 - Tripping or Trip-Free Relay: N$ p" D$ T" d) Y) C( {9 j& M% Z
* 95 - Reluctance Torque Synchrocheck
* Q; X; i& n- \4 N9 ?5 i4 S * 96 - Autoloading Relay |
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