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List of Device Numbers
' v R) Z: ~& t! aClick to learn more...5 [% t; G# H( r+ W+ Q0 ]
' z$ ]: |, M% o+ e w) y * 1 - Master Element4 H" s& e9 l/ L! o
* 2 - Time Delay Starting or Closing Relay
1 r; K$ N8 b: @: b# E * 3 - Checking or Interlocking Relay' d) p3 ]* f6 q w6 P+ C
* 4 - Master Contactor% E) L! ^0 k2 t4 B
* 5 - Stopping Device. `: m# j4 r% s& W2 n9 M0 N7 N
* 6 - Starting Circuit Breaker
' j( L* ?' b$ {& V * 7 - Anode Circuit Breaker3 e, T7 r: Q; S! R* n% g% \6 o3 A
* 8 - Control Power Disconnecting Device* X/ R, ^& c. o0 e/ O+ Q# j: Q" J
* 9 - Reversing Device
1 ~1 A2 S2 w6 P- T/ {. z * 10 - Unit Sequence Switch& s! U" x$ p6 a/ m; q
* 12 - Overspeed Device$ J" K9 I* a* S5 |
* 13 - Synchronous-speed Device' k* I f- L! M6 O9 N, n
* 14 - Underspeed Device4 V, D( C, q! c
* 15 - Speed - or Frequency-Matching Device- H, g' r5 F/ T/ G; L7 @2 W
* 21 - Distance Relay% ~5 \; a" ~. x( k2 D+ K
* 23 - Temperature Control Device' x6 R; [, Y* o5 u
* 25 - Synchronizing or Synchronism-Check Device9 f" { X* i& I6 P+ j0 ~
* 26 - Apparatus Thermal Device/ W0 z, X2 n7 N( M% i, b
* 27 - Undervoltage Relay
) k8 X0 j5 _5 I* [! ^' x' S * 29 - Isolating Contactor( X) a8 M' I% a0 [ Z
* 30 - Annunciator Relay
3 L7 B/ H# G j9 a * 32 - Directional Power Relay: V5 }: K% M5 |( x
* 36 - Polarity or Polarizing Voltage Devices+ J# d& U- n9 Q( y7 U. s7 g
* 37 - Undercurrent or Underpower Relay
% }/ W' Y0 u" O; g% ] * 38 - Bearing Protective Device
6 o- |- W# [1 O! X * 39 - Mechanical Conduction Monitor6 ^/ ?! i6 L. c6 s. E6 `9 x1 J
* 40 - Field Relay
! D6 ?8 p) g; ]4 v, s# H$ X * 41 - Field Circuit Breaker2 }, C& w8 P4 N7 b
* 42 - Running Circuit Breaker
5 k- S. f) A# `/ J& [. {; T * 43 - Manual Transfer or Selector Device
1 W. \ l7 x$ Q( d& E * 46 - Reverse-phase or Phase-Balance Relay' j* H# D/ ^. G5 d$ a v$ ]
* 47 - Phase-Sequence Voltage Relay( r+ D' _- {4 E- K. d
* 48 - Incomplete-Sequence Relay4 j' [, ]3 N' `; p d* }
* 49 - Machine or Transformer Thermal Relay
# Y6 y6 b; e$ m9 g+ H * 50 - Instantaneous Overcurrent; z( O) C1 A- h
* 51 - AC Time Overcurrent Relay
$ B' b1 |, v3 s2 s* t! w * 52 - AC Circuit Breaker& }# o1 A N. V/ O4 k4 n- X9 _% t" f
* 53 - Exciter or DC Generator Relay$ l; R6 S" t ^! Z& `( y/ o7 ]
* 54 - High-Speed DC Circuit Breaker
: D& V; |5 q; U0 N * 55 - Power Factor Relay
4 Y& c* D% o- q6 U' }: n" m * 56 - Field Application Relay; k/ Y+ e* f- g6 r, k$ }! f: G0 \
* 59 - Overvoltage Relay
9 Y. d: @4 e& E/ Y- p. V6 f0 p2 Y * 60 - Voltage or Current Balance Relay1 N5 ?; ^+ `2 |
* 61 - Machine Split Phase Current Balance, w3 ~% j1 @; b& Q, l2 e' U( P. |
* 62 - Time-Delay Stopping or Opening Relay& S- W) p" a4 g; e, c
* 63 - Pressure Switch8 E+ y( L4 R4 b7 [7 e
* 64 - Ground Detector Relay: l& U" E! X8 R) v. T j
* 65 - Governor$ u3 }3 y# X5 U) c& q
* 66 - Starts per Hour
8 J; \# ~( S. Z. q" E e2 \ * 67 - AC Directional Overcurrent Relay3 Q, N4 J4 t& ~: }
* 68 - Blocking Relay' Q& e3 n" I) C1 E
* 69 - Permissive Control Device
3 c$ g0 R1 s8 z& ~5 ~# V) P5 o * 71 - Level Switch
0 `4 T% Y; P, e( g0 ~% G! @ * 72 - DC Circuit Breaker" w0 d+ l$ e9 i8 Q
* 74 - Alarm Relay
5 K) M' R. f7 z% y0 A3 o * 75 - Position Changing Mechanism3 v+ `4 W/ `+ H: m1 E
* 76 - DC Overcurrent Relay f5 N- G8 s5 u0 I2 t) ?% U
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
' F t9 S6 }" R% p * 79 - AC-Reclosing Relay i3 ?1 g" z+ j5 d
* 81 - Frequency Relay
% `" U; U+ x* d$ k4 Z# f$ { * 83 - Automatic Selective Control or Transfer Relay
2 W( x$ Z v$ z' d. }8 R * 84 - Operating Mechanism
6 w" S9 u2 E6 v1 h# z * 85 - Carrier or Pilot-Wire Receiver Relay; ^ F. g2 [$ [% {3 ~% V. {
* 86 - Lockout Relay2 p) m! A9 w. l# Y! C1 c
* 87 - Differential Protective Relay
5 I+ v9 P( ~& p& P- I5 w! H. v5 o * 89 - Line Switch8 Q4 M, n) o& w; R# A
* 90 - Regulating Device
1 D3 Y' a+ S: C/ [7 d * 91 - Voltage Directional Relay
6 g# d8 }- n! D6 W8 G * 92 - Voltage and Power Directional Relay
8 u3 ?* q# n" d- z8 a * 94 - Tripping or Trip-Free Relay
+ x0 |) u$ E% e* F3 N * 95 - Reluctance Torque Synchrocheck
+ d# E5 T5 }% _* r1 h! C/ { * 96 - Autoloading Relay |
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