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List of Device Numbers
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* 1 - Master Element* r. n; g+ Z4 d8 Y+ Y. m0 O5 R3 w
* 2 - Time Delay Starting or Closing Relay* l( y* K% [# a# M& v- @) ?
* 3 - Checking or Interlocking Relay
) z5 ?2 g, t+ @4 z" o * 4 - Master Contactor
. V! Z# I5 f+ m/ G * 5 - Stopping Device
, S6 l% z$ T5 ~0 V; f * 6 - Starting Circuit Breaker
: i' v' n8 s) H z# y Z, F h* A' O/ d4 b * 7 - Anode Circuit Breaker1 a. I: I( \+ [* x
* 8 - Control Power Disconnecting Device+ D0 k$ N1 O( O5 f* ]3 v- z7 U, g
* 9 - Reversing Device
# u4 q$ a, z' X. P1 T% ^7 x5 m& u * 10 - Unit Sequence Switch
# X X( ]$ R" B, D% y& P * 12 - Overspeed Device
& |7 D l$ Y; o$ h8 Q8 _ * 13 - Synchronous-speed Device
! w; m6 j/ | Y5 [& X0 z+ I * 14 - Underspeed Device" K! w& M" O# Q' K9 P* C3 u
* 15 - Speed - or Frequency-Matching Device, |/ y) g" z6 W7 v' i
* 21 - Distance Relay
9 ~4 q2 o$ f) j) O) P L * 23 - Temperature Control Device) ]4 D! l& e1 E: l: B
* 25 - Synchronizing or Synchronism-Check Device
6 b* p5 @/ t7 K' j+ p! S * 26 - Apparatus Thermal Device
. G! O2 e. P i, ^. i( x6 C) Y * 27 - Undervoltage Relay
. x4 x1 k, A6 N0 C8 x * 29 - Isolating Contactor
) U' D+ q9 T5 l e$ O+ L * 30 - Annunciator Relay8 t8 D! Z% e: U- v) g" t+ s4 k
* 32 - Directional Power Relay+ O) g' W, ]8 M( ~ o E# B
* 36 - Polarity or Polarizing Voltage Devices4 G( g2 ~6 _5 L/ b% U1 @$ }- W7 b, o
* 37 - Undercurrent or Underpower Relay7 q! Z/ K5 w& H6 r% A8 h
* 38 - Bearing Protective Device. y. F6 L; k0 x- ]$ h1 R
* 39 - Mechanical Conduction Monitor
$ r9 ^0 `, c/ R8 T* g7 r * 40 - Field Relay& D# t5 e6 K/ e) h$ Z5 v( K9 C
* 41 - Field Circuit Breaker: N4 O, f1 |9 ]% n0 u8 g
* 42 - Running Circuit Breaker$ o" _% ]1 c+ Z$ {+ ^% L& Q6 N
* 43 - Manual Transfer or Selector Device- f2 \* w8 {' X' M, I
* 46 - Reverse-phase or Phase-Balance Relay
1 S# G0 E7 r$ K. Z4 K _ * 47 - Phase-Sequence Voltage Relay5 a# D/ ~0 G' h% p, A6 x
* 48 - Incomplete-Sequence Relay
8 G) X8 r" E, P6 P; I3 z! u * 49 - Machine or Transformer Thermal Relay
$ X- Z& l# r- H& @9 { * 50 - Instantaneous Overcurrent
1 h @4 M) J0 @6 m' N, C" s& g * 51 - AC Time Overcurrent Relay
1 \ _) t$ r" l( n' q% y2 ? * 52 - AC Circuit Breaker
; z6 ?2 Q8 g( u5 M! g * 53 - Exciter or DC Generator Relay4 I3 @8 m/ I7 \8 S" I
* 54 - High-Speed DC Circuit Breaker. V8 t$ o0 a- F3 q/ E( ]5 a
* 55 - Power Factor Relay/ N5 O5 h% p6 p8 Y" \0 D- e( k; `
* 56 - Field Application Relay+ x$ ` u3 [ k. D
* 59 - Overvoltage Relay
7 m1 \& q/ K' ^4 b! K6 j' B5 K * 60 - Voltage or Current Balance Relay
5 B+ d: U, a6 Y% n$ h" @4 F * 61 - Machine Split Phase Current Balance
+ c: M5 l$ y5 ?" P. {* V1 Y; Y7 i/ f * 62 - Time-Delay Stopping or Opening Relay* g5 M3 g3 Z' x5 L# y
* 63 - Pressure Switch
9 ~* K# {, Q/ w4 p3 ?$ Q& o, n6 Q; R4 w * 64 - Ground Detector Relay! m' E: r+ O5 q" M, _9 l
* 65 - Governor
- @% ~. Z2 w% D% b; `. g * 66 - Starts per Hour
! U$ q2 R6 n3 U3 ~+ k1 W * 67 - AC Directional Overcurrent Relay
? N+ R! }& e0 s0 K# k4 N: l& V * 68 - Blocking Relay
& t [/ E' @: s) s * 69 - Permissive Control Device* }, |9 X% B* ?/ O- u
* 71 - Level Switch7 O' @+ D2 _ N8 i+ |& ]+ W- r/ e4 G
* 72 - DC Circuit Breaker2 D0 J. f% _8 j) D; p; e) P
* 74 - Alarm Relay
& m; y9 K/ V ^* P% R7 t3 ^7 Q * 75 - Position Changing Mechanism# W, N% k3 n9 l- V1 \4 Z7 f* E0 O
* 76 - DC Overcurrent Relay
" S. P* X3 z3 G3 {& S( R F& J * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
: x* ?: ?! w4 q * 79 - AC-Reclosing Relay! t" e/ |8 N- I' b% a8 A0 ]
* 81 - Frequency Relay
3 D% l' M% ^3 f/ h+ w7 g0 | * 83 - Automatic Selective Control or Transfer Relay
# x5 K3 L! b" Q i& o * 84 - Operating Mechanism
0 e% g0 z: g8 } * 85 - Carrier or Pilot-Wire Receiver Relay* ?/ ~7 q+ o. q- n
* 86 - Lockout Relay9 }; I8 b8 u( G& G E
* 87 - Differential Protective Relay; {; Z6 s1 [; ]' u1 H
* 89 - Line Switch3 P- w" v) {+ S% A+ m9 A# H( G
* 90 - Regulating Device
4 C( m% S* Q6 g6 _0 d& S' e8 e * 91 - Voltage Directional Relay8 V% a; G. f! i& p; Z: }, q
* 92 - Voltage and Power Directional Relay
! s2 ]2 C) ?: d2 X! Y/ y8 \ * 94 - Tripping or Trip-Free Relay+ H4 h& E1 O' z! |! C
* 95 - Reluctance Torque Synchrocheck+ c. Z e# S2 `' f
* 96 - Autoloading Relay |
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