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List of Device Numbers
8 n- C. t2 p( |3 t' N1 `Click to learn more...
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* 1 - Master Element
1 {) ~) Y4 ~7 a- Y ~! R * 2 - Time Delay Starting or Closing Relay+ y2 z# W1 R- T2 j# s6 p+ b
* 3 - Checking or Interlocking Relay5 \/ \7 D Q! S% o; i
* 4 - Master Contactor& B& }6 o4 ], ~8 Z- E' s) c
* 5 - Stopping Device
# G8 q7 H" ^+ l3 L; z; v ?* w * 6 - Starting Circuit Breaker, U1 {3 n5 H3 m8 `1 ]- V
* 7 - Anode Circuit Breaker8 [2 Q7 w: c' ]2 U5 Z
* 8 - Control Power Disconnecting Device
2 g+ q" {( i. ~8 ` * 9 - Reversing Device
$ ?: R v2 l- A$ m+ R * 10 - Unit Sequence Switch5 y, D1 h' n/ t5 P
* 12 - Overspeed Device
( }, ~7 e# y3 D) G: Y# f * 13 - Synchronous-speed Device
" h" ^5 m5 R* c * 14 - Underspeed Device0 f8 B* f" P/ E9 s$ Q
* 15 - Speed - or Frequency-Matching Device
" X5 D7 O& Y4 |9 m * 21 - Distance Relay3 I: P6 z( E- \ v/ _! t. }" I: ]
* 23 - Temperature Control Device7 {3 m0 N# U7 K9 ?
* 25 - Synchronizing or Synchronism-Check Device1 s `# j4 g, v" P) p, R
* 26 - Apparatus Thermal Device k. y( M& y, j) I* F% B$ \
* 27 - Undervoltage Relay
k: R ?$ b$ ~2 n% O5 i# @1 l * 29 - Isolating Contactor
$ N/ Q0 o, ]/ n( Q * 30 - Annunciator Relay3 V6 Q6 z! U6 s; K S
* 32 - Directional Power Relay
8 K* c: b1 d$ ` X* @6 D7 c- O, d * 36 - Polarity or Polarizing Voltage Devices% W, f: w& I; J: e( N" x
* 37 - Undercurrent or Underpower Relay' g0 p2 C7 S/ m/ s1 ]$ F- {
* 38 - Bearing Protective Device
" C, G8 A- x, x- X" b; n% O * 39 - Mechanical Conduction Monitor* w- ], W: g, x% l
* 40 - Field Relay$ C( f7 ?/ G! S/ _6 ]& n% B* ^
* 41 - Field Circuit Breaker
5 G% q, P; {4 g4 o * 42 - Running Circuit Breaker
5 m3 S. s8 T1 C! R' ` F2 p * 43 - Manual Transfer or Selector Device" T" z8 n- m7 K# y
* 46 - Reverse-phase or Phase-Balance Relay# ], v- F) H O0 H
* 47 - Phase-Sequence Voltage Relay& k1 H; T" x2 h- H X7 b
* 48 - Incomplete-Sequence Relay' I- C% i9 s2 q/ O9 K+ s
* 49 - Machine or Transformer Thermal Relay
2 g& G% X0 n, `& w$ w$ z * 50 - Instantaneous Overcurrent
0 o1 @# {( V% b2 s5 { * 51 - AC Time Overcurrent Relay
+ ]' c1 f* j g% W7 N * 52 - AC Circuit Breaker
& S: D3 K7 F6 E0 {; f* R5 Y$ p5 D * 53 - Exciter or DC Generator Relay
! s8 r( ]. _ m. ~ * 54 - High-Speed DC Circuit Breaker2 z# S2 P# i6 y( c6 Y
* 55 - Power Factor Relay1 H/ F" H7 W$ }' }) N0 }
* 56 - Field Application Relay3 ]' F- F$ J1 O) p, P8 j0 B& F
* 59 - Overvoltage Relay! b! s k2 v, X; O4 r- e
* 60 - Voltage or Current Balance Relay# x; {% H! R# T* O
* 61 - Machine Split Phase Current Balance% l4 C& S2 x) n
* 62 - Time-Delay Stopping or Opening Relay
, d+ F8 ?1 U0 T$ m ~0 W * 63 - Pressure Switch
1 b8 B; R8 o+ }# k * 64 - Ground Detector Relay. v! J3 i6 v, N" T) i
* 65 - Governor3 S# o8 f5 j/ q! f" m
* 66 - Starts per Hour
* B% J2 m, _4 u) P * 67 - AC Directional Overcurrent Relay
% {( `# s/ }0 B N8 R# z% p * 68 - Blocking Relay$ ] x- d6 W0 H. b/ e7 z
* 69 - Permissive Control Device
. b) l$ O; a% _% u9 m; ^& y/ k+ E * 71 - Level Switch
$ H' Q8 x5 s) i/ | \* Z/ b: x/ c * 72 - DC Circuit Breaker: D3 {/ W. V4 o x& K/ r
* 74 - Alarm Relay; J2 X$ X2 p1 `$ w4 T5 a7 s
* 75 - Position Changing Mechanism
) g, Q! J0 c" d# m/ w/ x. j * 76 - DC Overcurrent Relay& ]4 k# ~! o0 i7 `* }$ X
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
# u5 I* Z* z. W8 Z+ H * 79 - AC-Reclosing Relay: o f1 p: U I/ {: a4 F
* 81 - Frequency Relay E, Q, W- y& |) ]! W
* 83 - Automatic Selective Control or Transfer Relay6 Z) N% [" @- C) d- u `
* 84 - Operating Mechanism! h. ^% t7 G9 g# \
* 85 - Carrier or Pilot-Wire Receiver Relay% z" ~# u Q. U
* 86 - Lockout Relay, [' r; [7 [* M; x: y' l7 B% g
* 87 - Differential Protective Relay
! @+ N+ C8 D& v7 e( C * 89 - Line Switch
9 F, R% d. K5 J6 L7 ` * 90 - Regulating Device/ K; S" z, V: D! Q2 _. T9 B; ]
* 91 - Voltage Directional Relay
# Y2 i# W2 ~" @# h6 L * 92 - Voltage and Power Directional Relay
3 d9 x6 s/ t6 H. l4 o' {; }+ E * 94 - Tripping or Trip-Free Relay
9 y8 p! f# X( c. B/ \0 L * 95 - Reluctance Torque Synchrocheck
% p1 V' ^# F( X3 c3 S * 96 - Autoloading Relay |
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