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List of Device Numbers; U, G; u/ ^& ^) s7 K) p' V. k8 ^) J7 z
Click to learn more.../ j8 {) W- r+ Z0 r2 \# Y1 R
) ?# b$ f5 Z f4 g' E. X8 | * 1 - Master Element* K& Q+ W; ^; W( @' g1 C% I* [
* 2 - Time Delay Starting or Closing Relay8 ~2 S* B4 M* v3 F/ }
* 3 - Checking or Interlocking Relay7 c0 [5 g7 \1 U2 Z* @( g& B: O
* 4 - Master Contactor! }. g+ a) ^% }1 V( V
* 5 - Stopping Device' ?3 C1 O* v8 H3 F" I# n
* 6 - Starting Circuit Breaker
; q7 e( R: z8 ?9 ?. r% W$ E" m: Y% J * 7 - Anode Circuit Breaker$ B' w) ^+ F5 K/ V! T1 |- e' A# A
* 8 - Control Power Disconnecting Device) B* r0 a& {% L5 `2 Q
* 9 - Reversing Device4 A: t c2 i# {
* 10 - Unit Sequence Switch4 c6 Z, k0 ]1 S* f6 w* E! ]
* 12 - Overspeed Device5 S- G( j5 ?) I' c/ F. A
* 13 - Synchronous-speed Device4 q6 g7 F# D5 C+ S' M8 M4 k
* 14 - Underspeed Device4 i: P) U. P7 k: Y' o' Z9 A
* 15 - Speed - or Frequency-Matching Device
( v' H& q, h' y! D R( x3 C. o * 21 - Distance Relay" q5 O3 _- H# M: x
* 23 - Temperature Control Device1 Z: p' D. R3 ]: ~' Q5 P# G4 G
* 25 - Synchronizing or Synchronism-Check Device
( F* ?" O. L4 y" V3 z/ ^+ p * 26 - Apparatus Thermal Device
3 W; B9 e5 T1 b* w$ x6 C1 \ * 27 - Undervoltage Relay" q: R; l& h' [& C8 O, A
* 29 - Isolating Contactor
2 R. t8 t ^* U" N7 c' N * 30 - Annunciator Relay
, C; P. C0 V2 P$ n/ \ * 32 - Directional Power Relay( [4 Z3 a# `. f0 v4 J) ~1 z2 [$ N6 l
* 36 - Polarity or Polarizing Voltage Devices
; C# I! Q& T2 C * 37 - Undercurrent or Underpower Relay
+ y3 Y5 z' W: h+ r0 t* f3 g( G6 U * 38 - Bearing Protective Device
2 J% D% _! I R, U$ v * 39 - Mechanical Conduction Monitor0 E# O m4 G6 Y
* 40 - Field Relay* N' R- w g9 d. H+ {
* 41 - Field Circuit Breaker
, m" o& Y+ Z! R9 i& d * 42 - Running Circuit Breaker
9 Q0 s, k* A( b2 |3 i8 } * 43 - Manual Transfer or Selector Device% x( {- \: _* f( E
* 46 - Reverse-phase or Phase-Balance Relay
1 M; \8 L$ x% j$ l5 v& b * 47 - Phase-Sequence Voltage Relay6 X" }8 @5 X% i' N0 [! f2 U6 _0 @
* 48 - Incomplete-Sequence Relay
5 y2 O* H( z$ {( P. C) v: u2 _: x$ E: r * 49 - Machine or Transformer Thermal Relay
- ]& @) v1 K2 y& T& d * 50 - Instantaneous Overcurrent+ C; Z7 _& J( ] B. j
* 51 - AC Time Overcurrent Relay
' ]( P6 W. _2 f# }* ?) z% ~1 }: M * 52 - AC Circuit Breaker3 |1 `3 ]: m$ m# v
* 53 - Exciter or DC Generator Relay5 I, H' Y, h8 M/ d8 c# Y
* 54 - High-Speed DC Circuit Breaker z) k, `4 o7 V& w' O
* 55 - Power Factor Relay
$ m! T- L1 |# x7 ~& ? * 56 - Field Application Relay/ c; O3 F4 g1 }8 F3 W
* 59 - Overvoltage Relay
N% y9 J2 t" g" c s * 60 - Voltage or Current Balance Relay4 A s( T% B6 o& |9 U' J! b& V; ?
* 61 - Machine Split Phase Current Balance) Y- A7 M4 g. z- R
* 62 - Time-Delay Stopping or Opening Relay
$ M r7 I0 D q: H8 O% F& \$ @& w0 A * 63 - Pressure Switch' V5 O9 q4 S, X
* 64 - Ground Detector Relay
" z0 W( ?" C0 V1 z$ d$ D3 o# K ^ * 65 - Governor
3 P, j8 b% l' |- Q% o X * 66 - Starts per Hour, @8 s6 x' G+ _0 a. m6 {! ~) V
* 67 - AC Directional Overcurrent Relay
3 F& Y- U/ R( ]. q* l/ T; e* B * 68 - Blocking Relay
3 s7 K4 O/ _' J * 69 - Permissive Control Device
p- [+ w1 I9 I5 P# y * 71 - Level Switch
' Z* J( Q E3 F * 72 - DC Circuit Breaker
. ^& T' v0 P5 ^0 ? * 74 - Alarm Relay9 x' h* b8 s ]# m
* 75 - Position Changing Mechanism/ A: Z! ?( p) A0 n; R
* 76 - DC Overcurrent Relay
& F* H( v4 n. d/ p7 N * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay5 ~: ~8 B8 @/ R
* 79 - AC-Reclosing Relay/ K8 ]0 I, l" o6 s+ u6 L- b, W) c
* 81 - Frequency Relay8 |! v, P% R* ^2 u" N5 ^
* 83 - Automatic Selective Control or Transfer Relay
/ a0 \0 [) [ e& `. z9 W * 84 - Operating Mechanism
\; R" L: R) L- x. s4 a * 85 - Carrier or Pilot-Wire Receiver Relay1 W0 B. ]( O. M' `+ X# H' A+ U. k
* 86 - Lockout Relay' F P3 r/ |7 f+ f8 {8 T% v
* 87 - Differential Protective Relay
+ @4 X, ]. C: W, p7 ]( }; A; b * 89 - Line Switch. ^1 z8 n [! X
* 90 - Regulating Device
4 J3 d( k0 g$ t * 91 - Voltage Directional Relay
, Q$ N# l/ x/ E5 q; j+ H * 92 - Voltage and Power Directional Relay; \6 T/ y# F% P F4 |3 I& E
* 94 - Tripping or Trip-Free Relay
% @0 x5 q+ A" Z& x( t5 T * 95 - Reluctance Torque Synchrocheck
3 ^$ p6 g% B2 l5 I/ q * 96 - Autoloading Relay |
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