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List of Device Numbers
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* 1 - Master Element
0 p8 V- ^2 a( N3 i3 l( w, ^$ P# @2 ` * 2 - Time Delay Starting or Closing Relay
* i- p4 k+ ^% t6 D% E7 l * 3 - Checking or Interlocking Relay9 T) R' @; _' ^; R5 b
* 4 - Master Contactor
! p$ a& f: d6 p: y8 K. [& p4 e * 5 - Stopping Device
* o- J" O# H: L/ f5 h * 6 - Starting Circuit Breaker& X$ }, M3 b( T9 L8 s/ c, Q
* 7 - Anode Circuit Breaker
4 `+ A2 Z! D1 L5 d% Q- M+ T" { * 8 - Control Power Disconnecting Device
) [2 U0 n6 a. v8 ^" Q @ * 9 - Reversing Device, b( o7 o# C, E, k5 |+ C H
* 10 - Unit Sequence Switch+ z k& u, m; M. n
* 12 - Overspeed Device
; W2 R) P6 B- V4 v( j( }# Z; {8 H * 13 - Synchronous-speed Device& y- m2 m( k5 `3 s/ c/ Z4 ~( M
* 14 - Underspeed Device8 ?$ @9 q% R! R) J0 d& z
* 15 - Speed - or Frequency-Matching Device/ K. T4 i5 d6 B$ s
* 21 - Distance Relay5 F n6 G2 Y4 h8 Y& p
* 23 - Temperature Control Device1 x* [* D! w; |6 w& w
* 25 - Synchronizing or Synchronism-Check Device
! t3 K. V0 z2 G( u" g! O! ] * 26 - Apparatus Thermal Device
" m- S. _# \! Z% J) |2 ^8 M * 27 - Undervoltage Relay
3 [( \5 _# l& L5 ] * 29 - Isolating Contactor
! N: d- M$ q- S9 T * 30 - Annunciator Relay
% {7 f6 x$ q) u& p+ N * 32 - Directional Power Relay$ S8 @3 o. E/ m6 b0 ^$ R
* 36 - Polarity or Polarizing Voltage Devices: U/ T. l% g* J" k; b" M' ~
* 37 - Undercurrent or Underpower Relay
, @; x3 I4 g/ u * 38 - Bearing Protective Device
+ g3 K& n5 v( p2 u. e * 39 - Mechanical Conduction Monitor/ e9 r" m" J3 E6 R
* 40 - Field Relay
) m5 @2 u" I- A * 41 - Field Circuit Breaker' x h7 ^, p7 n* Z z. M
* 42 - Running Circuit Breaker% a5 J$ ^, m* M( d# d1 a5 F
* 43 - Manual Transfer or Selector Device3 o4 ^9 ~$ E6 }; C8 L/ a
* 46 - Reverse-phase or Phase-Balance Relay8 t) v9 L& z& Y; }) L" {" W0 j
* 47 - Phase-Sequence Voltage Relay/ d" t: [" c3 E: y
* 48 - Incomplete-Sequence Relay5 s# R% c0 i/ g* t& G# v
* 49 - Machine or Transformer Thermal Relay; b2 [1 b: K4 M2 u- p& ^
* 50 - Instantaneous Overcurrent9 `6 b, m; P5 q- l0 d' J- G
* 51 - AC Time Overcurrent Relay
t* s& L. \( {( z0 e9 Q) o * 52 - AC Circuit Breaker
# S( r% Q# t' |0 V! ^6 L+ b1 t * 53 - Exciter or DC Generator Relay8 i' C5 _/ C& H; P5 I% x9 C
* 54 - High-Speed DC Circuit Breaker1 M7 _& K( V' ]6 ^
* 55 - Power Factor Relay" n$ c7 B3 C& `8 N
* 56 - Field Application Relay
: G S n, J5 b8 w1 o' d * 59 - Overvoltage Relay
' O2 @' X6 Q8 }% b * 60 - Voltage or Current Balance Relay
( k7 {$ v- t2 d& e& d( D/ x- s" r" W * 61 - Machine Split Phase Current Balance
7 O" L' u' U! y) a0 ]: j * 62 - Time-Delay Stopping or Opening Relay
/ B5 l6 ^0 {. X( s/ S8 v7 b' c * 63 - Pressure Switch
' f. y0 m- V, _4 J& B% D7 A * 64 - Ground Detector Relay. F* k9 A' l7 q# U) g$ e G
* 65 - Governor
, H6 m0 V) R: {6 x6 D * 66 - Starts per Hour% g X; O8 n) X7 u& p! O( R
* 67 - AC Directional Overcurrent Relay
^$ r# ]: _9 u$ i/ l * 68 - Blocking Relay
0 H7 j1 W0 @( @+ }( y. L: z * 69 - Permissive Control Device5 f3 @, _3 o i2 D8 @2 q
* 71 - Level Switch, ?% b: ]9 b9 f7 K$ d. S, Z
* 72 - DC Circuit Breaker
: V8 g3 ?- P" n/ ]7 v * 74 - Alarm Relay
0 G1 _4 e& J h H! A' S * 75 - Position Changing Mechanism# N0 j- [3 u- Z) b3 U
* 76 - DC Overcurrent Relay8 J' K2 I, N N$ O% R5 [9 Y0 e6 Z
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay( p4 a8 f4 B* Q }
* 79 - AC-Reclosing Relay9 n" p4 `$ f8 Y0 t
* 81 - Frequency Relay, P% Q# @2 o) p, @3 m
* 83 - Automatic Selective Control or Transfer Relay5 t3 u/ j9 }! C/ ?) K) D
* 84 - Operating Mechanism& k. }' }4 j. O' u" @' [; A2 e
* 85 - Carrier or Pilot-Wire Receiver Relay/ F+ r2 |. g+ r# \) v3 X7 N
* 86 - Lockout Relay; |7 t! E1 y; ]
* 87 - Differential Protective Relay! B9 u( l2 s9 h& n0 h9 R1 O
* 89 - Line Switch
. h# w, K) Y N0 f9 x4 C# w * 90 - Regulating Device2 a$ ^, e& c5 f9 X1 T/ L
* 91 - Voltage Directional Relay
0 R% S# o! S" e7 A * 92 - Voltage and Power Directional Relay, d% w! y! j3 R5 M$ n" e
* 94 - Tripping or Trip-Free Relay
( N/ ^: D# C& g8 s * 95 - Reluctance Torque Synchrocheck( Y4 A" T# K9 _+ x, z
* 96 - Autoloading Relay |
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