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List of Device Numbers
/ R8 r$ t! l$ h& I- KClick to learn more...2 W! a+ n: _" C g
3 @0 P; n5 @* S/ N3 a/ y$ ] * 1 - Master Element
- X2 M! T% `+ ^( P/ \$ c) ^ * 2 - Time Delay Starting or Closing Relay
. Z" v9 M" _" f7 S v$ q * 3 - Checking or Interlocking Relay) H. P. O- W6 m0 U* l+ F
* 4 - Master Contactor* a' S1 o! J2 V7 Z
* 5 - Stopping Device0 m$ X k: h0 K8 a" S& ]- ^
* 6 - Starting Circuit Breaker
) c6 S* ?: a- R( V* Y * 7 - Anode Circuit Breaker
0 M5 F5 M) K8 |7 y' ]! \ * 8 - Control Power Disconnecting Device: H. k$ E/ n7 d$ g2 y
* 9 - Reversing Device
, W, t+ g& I y c * 10 - Unit Sequence Switch2 u) e8 ^9 K4 M; T' }9 s" M
* 12 - Overspeed Device
2 }# O0 O2 A; U * 13 - Synchronous-speed Device9 `! S% ~. x! S* t1 E
* 14 - Underspeed Device! ]0 S& g$ |9 Y4 A: k* O8 B
* 15 - Speed - or Frequency-Matching Device( O/ ?8 C/ i2 ?* s6 I" |, a, C
* 21 - Distance Relay
N# e( q u% I- j4 L, T% c4 V- E/ l * 23 - Temperature Control Device
9 f' L& z( {5 m) V0 C" V. I P * 25 - Synchronizing or Synchronism-Check Device3 P' d4 R( [% \& S' }8 i. J
* 26 - Apparatus Thermal Device: c- G/ A4 B8 F: R5 J7 e
* 27 - Undervoltage Relay8 m, Y4 c3 v" d I1 m
* 29 - Isolating Contactor: y- |; ~' ~2 e
* 30 - Annunciator Relay' Q' P/ P# R% r. y- V. U" y9 d
* 32 - Directional Power Relay
! A4 ]4 Z/ o9 }# n$ E0 c * 36 - Polarity or Polarizing Voltage Devices
- ~* K! l9 P2 w6 ] * 37 - Undercurrent or Underpower Relay
$ B V( z% B1 P5 K$ ~' T * 38 - Bearing Protective Device
( s6 A! a5 C" k4 `! S4 { * 39 - Mechanical Conduction Monitor
- Q) {2 Y0 X% z; H- O$ a * 40 - Field Relay
8 c" a* F1 B$ h * 41 - Field Circuit Breaker
& y* s1 r8 w7 h4 J' K5 W * 42 - Running Circuit Breaker
+ @- d8 x+ e# D% O/ K& r- v q * 43 - Manual Transfer or Selector Device! |8 w& z( O$ b" v$ f3 e
* 46 - Reverse-phase or Phase-Balance Relay
" Q- {; J9 \& h! a' a8 ` * 47 - Phase-Sequence Voltage Relay
3 e( _# X* H$ ~/ _2 o; |/ z * 48 - Incomplete-Sequence Relay
. i F) T0 |( a* c% w * 49 - Machine or Transformer Thermal Relay
) S. ~( I3 A% p5 ?* | * 50 - Instantaneous Overcurrent
' r; h* r& B3 }) \ * 51 - AC Time Overcurrent Relay
8 ^, X1 i: V2 E9 a& Z * 52 - AC Circuit Breaker- s# K. ~+ Q1 s$ Q* R3 a8 o
* 53 - Exciter or DC Generator Relay
# F# x: ]/ a+ l8 K) v; s * 54 - High-Speed DC Circuit Breaker6 P; G' _; _) v
* 55 - Power Factor Relay+ o \; \6 N% F. U
* 56 - Field Application Relay" E' Q6 U7 D! |5 O* Q+ B3 G
* 59 - Overvoltage Relay
. t3 K! o, A- Y1 q" X7 ]. U * 60 - Voltage or Current Balance Relay& B. ~6 [8 N. _6 S! V
* 61 - Machine Split Phase Current Balance
) i8 b4 p3 x' E; F5 d, Z# m# O& A * 62 - Time-Delay Stopping or Opening Relay; M3 d+ q8 y4 X& T! A6 i m
* 63 - Pressure Switch1 [- g( y D" e v. v4 K2 }: Z
* 64 - Ground Detector Relay+ Q' ~' q9 G H! y9 a+ F8 x
* 65 - Governor
, N( m3 D+ }& Z * 66 - Starts per Hour7 U2 G$ X, t- V
* 67 - AC Directional Overcurrent Relay9 Y, Z* {6 u3 v0 {5 H% v4 h1 \
* 68 - Blocking Relay
) ^& Q' j, Q5 C/ X/ |0 ^; a * 69 - Permissive Control Device* M0 Z. O4 x+ }2 k% T, t9 K3 b" z
* 71 - Level Switch: g/ ]0 Z: U* @* t: I8 w. }1 l* O: A
* 72 - DC Circuit Breaker' q1 b l3 z; P4 `% X0 l
* 74 - Alarm Relay! Q( y$ w, P# f, @5 e% @# `
* 75 - Position Changing Mechanism
! H9 _& _( `, Q$ d9 i * 76 - DC Overcurrent Relay0 S8 b% v) f/ L, T: P0 c: a
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
0 h, S% s" c0 Q * 79 - AC-Reclosing Relay6 F# X& ?- j5 [# ?$ k
* 81 - Frequency Relay
( I! @% T3 z4 O4 ~# i$ C( ] * 83 - Automatic Selective Control or Transfer Relay
: i5 p r; _+ K0 I * 84 - Operating Mechanism
, x# {# o& _5 ], G$ v7 b * 85 - Carrier or Pilot-Wire Receiver Relay+ U% m2 Y* X& o* d. k
* 86 - Lockout Relay
7 A+ l% c. g8 @1 W* g7 B7 F/ X * 87 - Differential Protective Relay* l+ d& v. I3 H! ?& ^
* 89 - Line Switch. f, V$ a; j% w8 t
* 90 - Regulating Device- c4 `2 P; q/ g
* 91 - Voltage Directional Relay" z+ w' w- A e6 z8 O3 z
* 92 - Voltage and Power Directional Relay, T; A* a. ^; e; T
* 94 - Tripping or Trip-Free Relay
0 U1 m0 B+ o. ^ * 95 - Reluctance Torque Synchrocheck! l h" I' q1 t
* 96 - Autoloading Relay |
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