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List of Device Numbers
# j" S- ]0 p( V! G/ T) rClick to learn more...5 i; Q4 S; x- c
" D2 y6 C d1 S * 1 - Master Element1 I7 F R, C' E: w" {
* 2 - Time Delay Starting or Closing Relay) u& l/ J* Z0 ^, I* m: E2 A+ v
* 3 - Checking or Interlocking Relay2 ]/ q4 e* x Z: U6 e
* 4 - Master Contactor
: T9 F- X( I9 D: Q& k/ z9 A * 5 - Stopping Device% D% H1 E' ~# @
* 6 - Starting Circuit Breaker
: ~; f% f7 K( z: I * 7 - Anode Circuit Breaker& W6 g" j: @! v$ Z9 ]3 c: p
* 8 - Control Power Disconnecting Device
- r3 O8 N1 d5 r: S6 N * 9 - Reversing Device; F! y E; x% m- @# C7 c, G2 \# m/ u4 b
* 10 - Unit Sequence Switch
- P- c5 `$ s7 m+ K8 ]0 t * 12 - Overspeed Device4 o3 O9 q, X0 G5 c" h3 t8 j9 x
* 13 - Synchronous-speed Device
" x- P+ N( D+ z u * 14 - Underspeed Device
5 B4 y- k/ i) L& K, w! i# `6 i * 15 - Speed - or Frequency-Matching Device
7 ^* ^3 m2 m2 M2 Z( G" I * 21 - Distance Relay
& a/ R0 N; o. R; h' g2 t4 m5 B * 23 - Temperature Control Device% @5 }/ Y& j& R' r9 T7 J
* 25 - Synchronizing or Synchronism-Check Device$ p- ]& S( D5 j
* 26 - Apparatus Thermal Device
* q/ k0 S% z! Y0 h% a9 f0 x * 27 - Undervoltage Relay4 a7 z! f" _3 M8 S( C, P
* 29 - Isolating Contactor
4 _3 w0 ]% R5 ~5 y * 30 - Annunciator Relay9 \+ v+ l { w' [; Z; m* M5 {
* 32 - Directional Power Relay
5 |! m" Q3 W& w/ [ * 36 - Polarity or Polarizing Voltage Devices
2 Y6 x' I2 h7 B5 M2 j * 37 - Undercurrent or Underpower Relay
' M6 {* P3 W0 G& ? * 38 - Bearing Protective Device
, U+ B$ k: c# j, }! k% _& b n0 G0 f * 39 - Mechanical Conduction Monitor# F1 g! O) P- W5 n; M
* 40 - Field Relay' y1 h) o+ _( S" C
* 41 - Field Circuit Breaker
) i8 R8 ^8 ^: r' U) q7 u * 42 - Running Circuit Breaker) ?% ^( k. O/ g! m$ j7 N' R' e+ i
* 43 - Manual Transfer or Selector Device! X' Y! V `" C! O& Y
* 46 - Reverse-phase or Phase-Balance Relay0 ?! _3 Y; f) S
* 47 - Phase-Sequence Voltage Relay' ?* y6 o, h! u' w6 h5 K
* 48 - Incomplete-Sequence Relay
/ I3 g9 F( X& R3 H, W * 49 - Machine or Transformer Thermal Relay& D" _2 v7 M' @, {7 v6 e
* 50 - Instantaneous Overcurrent
; ?" B0 J3 T: d% w' N * 51 - AC Time Overcurrent Relay: E' S8 p; x. w# a2 p% W7 _7 f5 @8 s
* 52 - AC Circuit Breaker
+ S& C/ l& g7 g * 53 - Exciter or DC Generator Relay4 p% o0 n, E: Y2 d# ~5 o, o
* 54 - High-Speed DC Circuit Breaker
8 f9 E9 C5 r# J9 t8 ]2 w * 55 - Power Factor Relay
' F7 c! j( O0 V) M. \9 T * 56 - Field Application Relay
; v1 u* s/ J& R0 U& } * 59 - Overvoltage Relay
* O9 K- d' B2 [. [+ {; p3 o$ _ * 60 - Voltage or Current Balance Relay
8 d6 F, ]/ h ~1 U6 a3 u5 W * 61 - Machine Split Phase Current Balance
, k) n O2 L) L3 m& J5 f2 S1 { * 62 - Time-Delay Stopping or Opening Relay
! O8 q7 J- `' z) t * 63 - Pressure Switch9 G; D- G4 Z. h! h% J# Y
* 64 - Ground Detector Relay
. _4 g3 T8 I" W7 g * 65 - Governor2 I9 h# y8 `. y- k
* 66 - Starts per Hour; i* r! Y$ X( V5 Z1 U$ o
* 67 - AC Directional Overcurrent Relay) _. P' w4 r3 k
* 68 - Blocking Relay
! b0 a+ z+ U/ h3 I5 K; u/ [ * 69 - Permissive Control Device
2 C e- o% X$ R, t4 X * 71 - Level Switch
$ M8 z) s) W9 k x0 F4 O, q2 l! s2 @ * 72 - DC Circuit Breaker3 Y- H, z! t1 ?) z
* 74 - Alarm Relay
2 d4 ]) n; ?* u$ x# j. _ * 75 - Position Changing Mechanism
9 f0 e, T H2 V * 76 - DC Overcurrent Relay
: T \9 F9 K4 v2 f Q; ^2 _" h * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
% u2 ~! u) N& I4 |0 U * 79 - AC-Reclosing Relay
2 u# r- s9 G, F( F$ | * 81 - Frequency Relay
9 h& v, M4 R V; w' H- K1 U! P8 [ * 83 - Automatic Selective Control or Transfer Relay
2 _, [( L& Z) s" @! p: X# Y& w9 `$ I * 84 - Operating Mechanism
# q: S% E. y6 P7 Q * 85 - Carrier or Pilot-Wire Receiver Relay
1 I' J* w7 b/ f* {$ W * 86 - Lockout Relay& {& `8 z9 c& [: c
* 87 - Differential Protective Relay
) y: b$ a$ g$ ~ * 89 - Line Switch
( `" O8 |5 |' R" X& O * 90 - Regulating Device' t6 P1 N O/ G) C) A K. u% D6 R4 d
* 91 - Voltage Directional Relay
; }) y. f5 g6 y& x& e+ o, J2 Y * 92 - Voltage and Power Directional Relay& }! c9 h% s d+ L% D3 Z* h
* 94 - Tripping or Trip-Free Relay& c( e: \2 m' Q! }) A
* 95 - Reluctance Torque Synchrocheck, D/ s; e: c2 M( s: F8 D
* 96 - Autoloading Relay |
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