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List of Device Numbers
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" ~" }) E6 r$ t8 u) u * 1 - Master Element$ r0 d2 q6 Y4 h" E6 }8 `& ?% n6 j
* 2 - Time Delay Starting or Closing Relay
7 I u0 ^& J4 m5 t% J * 3 - Checking or Interlocking Relay
4 R: k8 s5 ]2 m4 f' [6 C * 4 - Master Contactor' x d$ f; s9 t! v4 \- j
* 5 - Stopping Device
" r& m, ?+ B# v$ ]* _) O * 6 - Starting Circuit Breaker
3 I/ e/ @& [5 R/ [ h, M * 7 - Anode Circuit Breaker
; B4 O# e9 x; D; R * 8 - Control Power Disconnecting Device
+ W1 f4 `/ f6 Q" m; S3 J1 g& R' ?& d * 9 - Reversing Device' M* J# V1 J, W9 R1 R
* 10 - Unit Sequence Switch* F2 W, Q5 Q- t3 ?2 D
* 12 - Overspeed Device
4 q9 J5 i7 p2 m; ^5 Z5 e * 13 - Synchronous-speed Device
5 _4 p* d. s) [" y * 14 - Underspeed Device
3 l1 w& L, L O8 I * 15 - Speed - or Frequency-Matching Device
4 l) |# f. Y4 m * 21 - Distance Relay3 D0 E/ z' F. |; {1 V i
* 23 - Temperature Control Device
2 A- F5 y0 D2 n0 M' W5 N+ B: h * 25 - Synchronizing or Synchronism-Check Device' P/ C2 x6 @/ F( l: |0 M
* 26 - Apparatus Thermal Device
% }7 V, b* E0 v& T% C( b * 27 - Undervoltage Relay5 H6 P7 L8 q9 e1 F+ G% c5 L4 U; x
* 29 - Isolating Contactor
8 t6 G- h% z! f4 F+ r1 }" ?4 j * 30 - Annunciator Relay
" ^5 C' p8 ~4 S% w) A6 R' i * 32 - Directional Power Relay- c7 n; M% i. a R; K _4 S
* 36 - Polarity or Polarizing Voltage Devices X% b8 E5 E, l8 M0 h5 a1 J
* 37 - Undercurrent or Underpower Relay
) w, {/ _+ @+ i9 n * 38 - Bearing Protective Device
6 L0 A. r! o! d+ [1 [3 h1 I * 39 - Mechanical Conduction Monitor& ^# @; ^! L9 N9 @1 n. b" `
* 40 - Field Relay- v+ M" O R" t
* 41 - Field Circuit Breaker- Z" j. c: K; p9 p3 D8 A
* 42 - Running Circuit Breaker' s3 W, ]" [+ v. d" L
* 43 - Manual Transfer or Selector Device) p n) P. j V8 s3 F8 O
* 46 - Reverse-phase or Phase-Balance Relay
( v0 M9 T8 R* N7 M3 A * 47 - Phase-Sequence Voltage Relay2 ^; r- d7 _1 }, T
* 48 - Incomplete-Sequence Relay
" {' t' m1 A9 ?* r9 } * 49 - Machine or Transformer Thermal Relay
. V; C9 ^2 z' n+ c * 50 - Instantaneous Overcurrent* _! a9 ^5 B* v8 q
* 51 - AC Time Overcurrent Relay
- ^5 E* G9 i- { * 52 - AC Circuit Breaker
; T/ u l8 F) l& L! ` * 53 - Exciter or DC Generator Relay; _! c. r6 G: s+ B% G; V1 Z
* 54 - High-Speed DC Circuit Breaker
% ~, e6 c) H' ^( P+ M+ v: s * 55 - Power Factor Relay$ V' k" L' ^5 \
* 56 - Field Application Relay. d) v: V$ Y% `, g* b, ]
* 59 - Overvoltage Relay
: }5 A' G& X H1 G4 E) E5 C& p * 60 - Voltage or Current Balance Relay
8 A) `, I3 X7 Q" w* u2 j * 61 - Machine Split Phase Current Balance
% ~ `) Z' W: z* i! T$ M, w0 r * 62 - Time-Delay Stopping or Opening Relay
% Z1 j1 O3 N0 @* O8 t * 63 - Pressure Switch
# P; b F) _2 U" t/ H * 64 - Ground Detector Relay" E! z: n0 S& g. h
* 65 - Governor
* j8 d! y* {# h# q0 L( T. s! X$ f * 66 - Starts per Hour
/ h! u9 b+ E$ D% ]8 M7 c * 67 - AC Directional Overcurrent Relay2 u+ t- a. c* T( ?
* 68 - Blocking Relay% F, A6 `# j8 ~
* 69 - Permissive Control Device- t$ A0 \, ^2 `
* 71 - Level Switch1 n' x7 h5 L% Y8 W$ W/ R% @& T, y
* 72 - DC Circuit Breaker( i/ u: i0 f$ {" U% s }- E
* 74 - Alarm Relay
5 S+ `3 R+ o4 u5 v# K * 75 - Position Changing Mechanism6 @2 d3 i8 Q. I6 ?$ C- o2 [
* 76 - DC Overcurrent Relay( i) X+ A; N n: ?
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay9 ?& |$ k7 D( g- a0 K/ y4 N4 ^6 Y
* 79 - AC-Reclosing Relay
) z6 l7 e' N2 \' ]7 A * 81 - Frequency Relay- q) y% n0 E, G6 ~/ K
* 83 - Automatic Selective Control or Transfer Relay X" Y- d) f8 e$ k6 n% p
* 84 - Operating Mechanism% |: x9 Q3 m7 R8 W# e5 r V4 R
* 85 - Carrier or Pilot-Wire Receiver Relay
% Q d/ Z8 _6 ~, }8 [" A * 86 - Lockout Relay+ _+ b3 L+ a7 e/ c2 h. x
* 87 - Differential Protective Relay
/ T- L3 E# [0 I * 89 - Line Switch
* l4 h8 _& K' q5 N * 90 - Regulating Device
" Y- G% x7 i$ @1 ^' @# [- F' d * 91 - Voltage Directional Relay
( ]+ b( U; R1 p+ }9 f8 z * 92 - Voltage and Power Directional Relay
2 Z, I; s- |# A1 c/ W. H0 {. ^ * 94 - Tripping or Trip-Free Relay
. Y! l5 F3 Q, L3 z C+ b * 95 - Reluctance Torque Synchrocheck
, m$ j0 X1 E2 J1 x! G- L * 96 - Autoloading Relay |
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