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List of Device Numbers
/ F e. L! o7 {Click to learn more...
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* 1 - Master Element
# c/ p5 R3 V: \& W* s * 2 - Time Delay Starting or Closing Relay
l: G: a% @) B * 3 - Checking or Interlocking Relay
0 p2 Q* V$ B7 }- k, l * 4 - Master Contactor# L5 V- M2 K4 P# y. ]* s
* 5 - Stopping Device
! l; D! [. ?/ c9 x$ C) {, y! l * 6 - Starting Circuit Breaker- G+ S% d) T6 y# Y- U
* 7 - Anode Circuit Breaker
4 e1 m2 O7 X: Y6 {4 Y( r * 8 - Control Power Disconnecting Device
. m+ [' L: ]4 B; V$ h * 9 - Reversing Device5 d2 g! J2 g. y3 X- d+ w# B+ G
* 10 - Unit Sequence Switch
( a6 ~7 n' n- L9 w" h * 12 - Overspeed Device. J' p5 A/ D6 d' e+ E% I
* 13 - Synchronous-speed Device
& P( O% C) ^5 {$ c9 y5 W1 U8 _" L" y * 14 - Underspeed Device
2 n! V) C, x0 m/ Y+ Y4 @ * 15 - Speed - or Frequency-Matching Device
7 M+ C( K# Q: _% [" ^ * 21 - Distance Relay
, a% D. l3 k% p. z# i * 23 - Temperature Control Device
7 Y2 b' ^/ E( o9 y0 |6 v * 25 - Synchronizing or Synchronism-Check Device- U+ M: _2 B+ @5 ?0 N8 d* S4 T# S
* 26 - Apparatus Thermal Device9 |0 v+ F( i0 s0 N- c' W
* 27 - Undervoltage Relay
- G4 `1 Y6 S; `4 W * 29 - Isolating Contactor/ K4 x; a$ P+ e2 j8 Z
* 30 - Annunciator Relay
x( H. x# O- I4 I) M * 32 - Directional Power Relay# m6 W k4 q( y6 u" K
* 36 - Polarity or Polarizing Voltage Devices
! _$ O7 B4 P9 b8 z * 37 - Undercurrent or Underpower Relay8 M6 o! k* m' Q2 X) ?
* 38 - Bearing Protective Device3 |6 Y, C- a5 h: r$ I* u
* 39 - Mechanical Conduction Monitor8 E* u, L% I, y
* 40 - Field Relay7 x4 z. b" I i t9 q4 F
* 41 - Field Circuit Breaker) m! {. L" o2 |1 X1 M. b
* 42 - Running Circuit Breaker3 ?( L$ d/ `/ {' p1 y
* 43 - Manual Transfer or Selector Device
0 s; r7 ~( q1 s * 46 - Reverse-phase or Phase-Balance Relay/ n8 x8 j! y9 _$ N# k7 K
* 47 - Phase-Sequence Voltage Relay+ N0 W9 W4 l4 U' \* ^
* 48 - Incomplete-Sequence Relay7 ~: ?) P) \4 ]& Q, x" N( E
* 49 - Machine or Transformer Thermal Relay
+ h/ ~/ E: O9 S8 t- ~ * 50 - Instantaneous Overcurrent
7 A0 ^% I; l- @, e$ c8 A * 51 - AC Time Overcurrent Relay
. K) \4 d. |, d; J * 52 - AC Circuit Breaker
. r# i' R! R- h/ K( b4 p * 53 - Exciter or DC Generator Relay
; ~! e+ Z1 F, t5 b! P * 54 - High-Speed DC Circuit Breaker
- M: Z ]! m% \ * 55 - Power Factor Relay
8 i# p, |$ `+ c8 J * 56 - Field Application Relay5 R! x, V6 J& \, e+ r7 j+ x
* 59 - Overvoltage Relay# e! D, R. F' @+ s
* 60 - Voltage or Current Balance Relay& t f! G% H9 P( ]
* 61 - Machine Split Phase Current Balance( n& G, u" F% c
* 62 - Time-Delay Stopping or Opening Relay
0 s1 c3 b% A6 ^% p * 63 - Pressure Switch
6 P& p, p7 @, n; b- @( s * 64 - Ground Detector Relay
) S& ]/ r' ~0 U3 J; s * 65 - Governor! m! t" Z1 C3 z$ M0 P
* 66 - Starts per Hour
' V- ] D! _1 f: f5 v0 h* B * 67 - AC Directional Overcurrent Relay
! n0 }) d' U. r; {0 S7 D2 H * 68 - Blocking Relay
; j7 N* i u6 q( q; F9 R! I * 69 - Permissive Control Device: a0 ]# d* F3 E! d
* 71 - Level Switch
' ^; c3 p( b) i" I/ S. V" Z * 72 - DC Circuit Breaker
! N, Q: t- N( `! k * 74 - Alarm Relay
" ]# Y! |& {, B: l8 r D9 Q * 75 - Position Changing Mechanism8 M/ I! K9 `5 g; C r
* 76 - DC Overcurrent Relay
, U3 _" r; C: M; v$ N( V * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay: B, p9 u }4 N6 w! s4 @
* 79 - AC-Reclosing Relay* [$ U+ t$ f# `
* 81 - Frequency Relay! D, f5 Y$ d/ M- V- b
* 83 - Automatic Selective Control or Transfer Relay4 d: L* `4 r3 B3 V5 p, W+ @& d
* 84 - Operating Mechanism: i5 ]+ ]$ I W( X
* 85 - Carrier or Pilot-Wire Receiver Relay
! a0 V1 p$ s& L0 T* f * 86 - Lockout Relay3 ~2 }% e+ d' N3 h8 {" a. }
* 87 - Differential Protective Relay2 m6 F9 E; `3 J2 ^/ v' K; r
* 89 - Line Switch
" \0 ^ i1 d y% I! t2 Q4 N * 90 - Regulating Device/ k( P* Z& W# j- ^8 G9 t
* 91 - Voltage Directional Relay, K5 Q i/ k4 _( r! d
* 92 - Voltage and Power Directional Relay1 A1 l& |) H6 g8 ]* V) X
* 94 - Tripping or Trip-Free Relay
* E3 ^. K3 R9 ~' ?; Y' |7 b* v& Q * 95 - Reluctance Torque Synchrocheck4 b! D6 [2 \' H7 M+ R, n
* 96 - Autoloading Relay |
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