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List of Device Numbers
2 R; X* G- A8 i6 l: `3 a3 GClick to learn more...( d! _: i; @0 Z) B8 g4 `- v
1 k! R! v. L* g! L * 1 - Master Element
6 |3 X/ N' |/ \0 t( y * 2 - Time Delay Starting or Closing Relay
6 ~5 y# V& A: ~ * 3 - Checking or Interlocking Relay
3 o7 c5 u: I4 L8 U5 _5 Z' R * 4 - Master Contactor
8 A% ~1 b* u$ v# M; x! U * 5 - Stopping Device
( I2 N* i$ G4 B+ d5 x0 p8 u+ K- K * 6 - Starting Circuit Breaker
( ^% `' d2 |( d" h8 j/ L3 e+ ` * 7 - Anode Circuit Breaker
- ^: k6 h% v& d( Y) ~$ v1 X * 8 - Control Power Disconnecting Device* p7 g4 q& c5 l& [0 ]
* 9 - Reversing Device
4 }/ h" q2 [9 ~3 H1 p |8 ?5 ^ * 10 - Unit Sequence Switch1 B# N! W$ N* }: _
* 12 - Overspeed Device
# d. h- D* k9 q2 T. n * 13 - Synchronous-speed Device
" a+ |; S6 [, H2 R, @% W8 w! t * 14 - Underspeed Device U$ u( w) M- T) ?4 W) r. k) Z5 _
* 15 - Speed - or Frequency-Matching Device
- B& B( Z( W! X9 U, Q, H+ _ * 21 - Distance Relay
" w) ]- `: }: H" c * 23 - Temperature Control Device
0 g& E9 l# x3 z2 B0 c' P * 25 - Synchronizing or Synchronism-Check Device3 B- d o: \1 p% ~( J: Q9 p& X
* 26 - Apparatus Thermal Device% h4 V( ?& N6 j3 p" b4 a
* 27 - Undervoltage Relay, }; ]% j5 F/ \5 [/ x! b8 h
* 29 - Isolating Contactor
3 [. n/ @( U4 d" [& g+ Q * 30 - Annunciator Relay& t# l+ f8 Z* H' v
* 32 - Directional Power Relay
, {, N& y/ `: G) a/ r * 36 - Polarity or Polarizing Voltage Devices/ U. H i) `& M( q" W% K
* 37 - Undercurrent or Underpower Relay
2 J0 y4 w" u2 Y# i* y a0 V [" M * 38 - Bearing Protective Device7 W2 k G9 ^+ y6 E# p( W, ]8 O' l
* 39 - Mechanical Conduction Monitor
( ^3 L* ?+ R2 x * 40 - Field Relay
5 K. s2 A2 _% p' [, g+ h * 41 - Field Circuit Breaker
3 E: P* m" K) P p9 Z7 P. V6 r1 b * 42 - Running Circuit Breaker
. Z" z/ {: u' c, w0 s * 43 - Manual Transfer or Selector Device/ Y' }1 L# m! g+ W, j8 Z8 y
* 46 - Reverse-phase or Phase-Balance Relay
, T) H& ?3 {4 n9 ?) C * 47 - Phase-Sequence Voltage Relay6 T% x3 u4 R& J3 f8 r: Q3 r" P' b7 J
* 48 - Incomplete-Sequence Relay
* T) x% D1 R8 a, X6 w, N) A * 49 - Machine or Transformer Thermal Relay
1 X& a' S- ~3 h1 N4 a) ` * 50 - Instantaneous Overcurrent
9 b( X( L. v; ?' V * 51 - AC Time Overcurrent Relay }' R- [1 }- f, d3 k; H; c5 i
* 52 - AC Circuit Breaker) K' p4 [) b& X8 K/ k
* 53 - Exciter or DC Generator Relay' U e6 k7 l# N: {- E2 c
* 54 - High-Speed DC Circuit Breaker
$ O$ i. y+ w, i, y4 { * 55 - Power Factor Relay
7 q; L }) z! s2 S8 E * 56 - Field Application Relay6 j2 {7 Q+ Y+ \+ e$ g& b9 R
* 59 - Overvoltage Relay" e" S8 _4 U/ |9 L
* 60 - Voltage or Current Balance Relay' X( I+ d& |, Y" L
* 61 - Machine Split Phase Current Balance2 I& ?" ]$ k' B& G
* 62 - Time-Delay Stopping or Opening Relay# n* ?- v4 N t: u/ O
* 63 - Pressure Switch
2 c" R; W! j2 ^& r& R * 64 - Ground Detector Relay2 p: m+ x. u3 V1 \) W5 E& B
* 65 - Governor0 ~. F2 _) s: ~) _
* 66 - Starts per Hour
" s" {9 |$ ~' W7 E h& \- h, D * 67 - AC Directional Overcurrent Relay3 S: X# S- n: P" S* X1 A
* 68 - Blocking Relay' B; ?; o5 {2 a. H e) [7 ]2 R2 X
* 69 - Permissive Control Device
+ [1 }: Q; ]1 R; B$ b/ m7 f4 U * 71 - Level Switch$ n4 N9 G* V8 x' B G7 T& ?8 \( L
* 72 - DC Circuit Breaker+ C4 p2 b6 x3 F
* 74 - Alarm Relay9 N9 n5 @4 q3 Z8 p* v1 b
* 75 - Position Changing Mechanism9 }! S$ e3 ^. f1 C/ u% h
* 76 - DC Overcurrent Relay
f5 I2 Y+ w. d; K/ ? * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay% m; W6 o, \: Z G/ N1 x
* 79 - AC-Reclosing Relay0 h# M: q4 w+ ]! H+ V& a: `2 u
* 81 - Frequency Relay3 e# a/ t9 V' z4 o$ |
* 83 - Automatic Selective Control or Transfer Relay" l" S7 K# k0 O1 ]! q/ |$ G' e6 G
* 84 - Operating Mechanism3 V$ |2 c1 q. G* u
* 85 - Carrier or Pilot-Wire Receiver Relay
& s+ C; l' p2 v8 j. _ * 86 - Lockout Relay$ o. D' h K" L. Z" Y) ~
* 87 - Differential Protective Relay/ Q; [: }7 a9 ?
* 89 - Line Switch6 Y) L$ ` D% K) I( l R6 d
* 90 - Regulating Device0 C. z( w! X+ U& B$ C
* 91 - Voltage Directional Relay# }3 B8 J6 C5 g* N
* 92 - Voltage and Power Directional Relay
: o/ d( }: g& d% J. F, B+ G% W * 94 - Tripping or Trip-Free Relay3 R! W) b, y7 j1 |/ n( m
* 95 - Reluctance Torque Synchrocheck
3 o6 B2 ], ?) @, b% e! l * 96 - Autoloading Relay |
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