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List of Device Numbers
1 K" c. u- I& |Click to learn more...
) E, w, [# F% m5 y% A
7 @3 }/ ]; N' e E5 b( |! F * 1 - Master Element
1 L# z/ _* J* r% E7 D, ^ * 2 - Time Delay Starting or Closing Relay
9 P) c; I) A% q7 Z5 K) c& ? * 3 - Checking or Interlocking Relay) k1 R. S- K' L* t, T0 \
* 4 - Master Contactor) x1 l9 a6 |- `1 U' o$ I5 Y% f
* 5 - Stopping Device! @8 F* @* v* |: W+ T3 e5 H
* 6 - Starting Circuit Breaker
- q4 z, h# X$ z9 z. q * 7 - Anode Circuit Breaker# s3 L+ N- @$ a9 c/ t+ l
* 8 - Control Power Disconnecting Device
9 y- m( O( E' X) A * 9 - Reversing Device1 W3 R( z5 p0 p e7 ^* C
* 10 - Unit Sequence Switch
( B9 o9 e Q- J, o * 12 - Overspeed Device: v; m' o- k/ H2 l4 N; r$ J' @
* 13 - Synchronous-speed Device6 U0 ~% G' |( \+ B5 F& G5 q
* 14 - Underspeed Device
' E' w5 k# p- ~: \ * 15 - Speed - or Frequency-Matching Device8 N! a; W# s. v/ P O2 u
* 21 - Distance Relay
# G" b2 J- {1 h2 R * 23 - Temperature Control Device
* c( N: g; J8 P * 25 - Synchronizing or Synchronism-Check Device. h% E5 m' L8 F3 E
* 26 - Apparatus Thermal Device
' G) j* C$ q+ j+ Z * 27 - Undervoltage Relay
+ ~- Y2 Z9 t; ~ * 29 - Isolating Contactor9 Y" ~ z2 q# |, r; D
* 30 - Annunciator Relay7 R6 B5 ?+ P' f5 B
* 32 - Directional Power Relay5 s+ V0 V4 j$ _; J
* 36 - Polarity or Polarizing Voltage Devices9 {, v5 X& O+ | j' ?4 ~% o: I' [
* 37 - Undercurrent or Underpower Relay
, I0 J) C, P+ ^ * 38 - Bearing Protective Device+ u) G3 z7 J4 i- c1 }' ?- [
* 39 - Mechanical Conduction Monitor
( h# ]+ T7 K+ g# x% P * 40 - Field Relay" N1 f. S+ P3 l, A
* 41 - Field Circuit Breaker, ?( p# K: _" e1 x! O+ W! _" e
* 42 - Running Circuit Breaker/ s( q# x9 ~" X+ U
* 43 - Manual Transfer or Selector Device1 M& f3 T# C) G' d4 A0 i9 s2 f
* 46 - Reverse-phase or Phase-Balance Relay
4 r9 Y* M4 U) f4 r: p) N8 L0 ^ * 47 - Phase-Sequence Voltage Relay! A; i& k/ U/ z+ D# ]
* 48 - Incomplete-Sequence Relay( L, |! g1 P) E8 F$ G% c
* 49 - Machine or Transformer Thermal Relay
l m# q5 Z2 p+ N4 ~4 a * 50 - Instantaneous Overcurrent. Y7 z7 _" H; w5 o
* 51 - AC Time Overcurrent Relay
$ O* ^6 M P1 w" y& _9 D * 52 - AC Circuit Breaker& f& X' v* K5 i
* 53 - Exciter or DC Generator Relay
! u: q F+ d4 y * 54 - High-Speed DC Circuit Breaker
7 L# [) {: \) ]- z0 z( V0 f( _ * 55 - Power Factor Relay& d" X6 Q+ q# p$ W, b
* 56 - Field Application Relay
% e. u% p/ g# w ~/ y * 59 - Overvoltage Relay% q F6 T, [% X
* 60 - Voltage or Current Balance Relay
/ X q! f; t" ` * 61 - Machine Split Phase Current Balance
# G- H; Z0 U @+ W4 ?8 t * 62 - Time-Delay Stopping or Opening Relay1 Q. G/ Q- o- O, X& I; i
* 63 - Pressure Switch! T5 r$ ]" W' P# ], e# \$ d+ @- P
* 64 - Ground Detector Relay
u0 }/ f3 O& U6 y" y5 C# \7 | * 65 - Governor
* x9 }2 w# V; [3 k, e9 x8 F/ e * 66 - Starts per Hour( ]& A! M# }# t& A
* 67 - AC Directional Overcurrent Relay
3 k, R$ ~8 x1 w8 O3 q' x" {: U * 68 - Blocking Relay6 M$ C2 \: I9 s6 W, ?
* 69 - Permissive Control Device A5 K) X3 w( b
* 71 - Level Switch% ~" s, e5 I N) P; i
* 72 - DC Circuit Breaker
# R9 q' F" Z; F& Z * 74 - Alarm Relay, r8 q# k( ~; m+ T4 L
* 75 - Position Changing Mechanism3 d& ?7 p1 `3 ?8 A
* 76 - DC Overcurrent Relay/ g5 X$ A+ J" s" ~# f! \4 _
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay6 \6 S, L: z7 |! I2 |5 _
* 79 - AC-Reclosing Relay
' u# E8 C& T2 W4 G, T1 u, A * 81 - Frequency Relay e* h! H }7 @3 q+ ^- }
* 83 - Automatic Selective Control or Transfer Relay
; ]- y+ P" Z& a * 84 - Operating Mechanism
2 t) ~/ M, d: p * 85 - Carrier or Pilot-Wire Receiver Relay2 V( o0 u" q5 b, B% m S
* 86 - Lockout Relay M) z+ ?/ f$ o
* 87 - Differential Protective Relay) G, C+ G) e1 s
* 89 - Line Switch
. A( J' w# @; u. o0 \( J5 s/ W; c * 90 - Regulating Device+ s: a Y8 o7 s) C
* 91 - Voltage Directional Relay1 w5 ~4 d- Z/ m+ B# H. G
* 92 - Voltage and Power Directional Relay
+ p* D8 c: ], p) N * 94 - Tripping or Trip-Free Relay% b$ A9 i6 b! s0 R! _) E. y
* 95 - Reluctance Torque Synchrocheck0 C% L6 _$ {7 `
* 96 - Autoloading Relay |
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