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List of Device Numbers
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# Z5 H) p, V3 B* c3 Z" w1 W5 [# U/ ^
* 1 - Master Element `4 \. x, |1 }0 w# T, n
* 2 - Time Delay Starting or Closing Relay
! d: N* ^+ d1 ]$ N# m * 3 - Checking or Interlocking Relay
1 r5 U- a! a3 p2 w* ] * 4 - Master Contactor
! _3 `8 R" J* J& d3 i& G# ]1 K* s * 5 - Stopping Device
2 M: B6 u& W2 O, [ * 6 - Starting Circuit Breaker
; X2 h( r' ~7 G7 \* z' ]4 s# ] * 7 - Anode Circuit Breaker
7 t+ k' m1 j! ^7 ?7 H# X0 e * 8 - Control Power Disconnecting Device
% B: c2 \+ ~: H * 9 - Reversing Device
, p7 @: C. j3 |, }1 o2 d" K/ E" U4 f * 10 - Unit Sequence Switch: q9 D' m! ^8 V
* 12 - Overspeed Device
5 U, t, V& l5 h: o4 H# y * 13 - Synchronous-speed Device
/ \: t$ y/ Q$ V- @: P * 14 - Underspeed Device
( e, g8 q! X4 K2 x9 k& Q$ x- ? * 15 - Speed - or Frequency-Matching Device
' G4 ?9 f8 ^; l1 m4 o1 G) J * 21 - Distance Relay
' k- S* z+ l5 c1 w" G: R * 23 - Temperature Control Device( o8 B6 x" S4 m8 N1 y$ c4 M
* 25 - Synchronizing or Synchronism-Check Device' [/ x1 d- Z! n* d0 I1 @5 T. C
* 26 - Apparatus Thermal Device( u4 f9 z4 k2 k/ W+ c
* 27 - Undervoltage Relay
, s- e5 ]0 Y5 E0 Q * 29 - Isolating Contactor
) _' Q$ r& Z5 W U7 c * 30 - Annunciator Relay7 C5 e/ I+ N( N+ t3 q3 F2 b, {
* 32 - Directional Power Relay
' P' u3 Z' Y( R* J7 |' E6 d1 U * 36 - Polarity or Polarizing Voltage Devices( E- f( T- r; S6 u% z
* 37 - Undercurrent or Underpower Relay% L: o9 e# }8 f, j2 U+ w9 w
* 38 - Bearing Protective Device
7 {# y, [6 C3 Z" ? * 39 - Mechanical Conduction Monitor8 m. q0 J7 C# ~' a @' b
* 40 - Field Relay, f- {9 }3 ^- l" ?
* 41 - Field Circuit Breaker
9 E, t* w/ p. f1 p/ Z( C1 a. d! h * 42 - Running Circuit Breaker; Q1 m0 ^8 V- T: r! Y# d% y, D2 ]! I
* 43 - Manual Transfer or Selector Device" ]' c6 T: R! U
* 46 - Reverse-phase or Phase-Balance Relay1 j. E6 i& F6 C; i/ I
* 47 - Phase-Sequence Voltage Relay
% L% D0 J: ~5 k: ?9 P: _5 Q% n$ G: x+ ] * 48 - Incomplete-Sequence Relay
! ?0 ~- K5 C8 @ * 49 - Machine or Transformer Thermal Relay: M$ q0 |" ?+ u6 r3 I& j- n. R
* 50 - Instantaneous Overcurrent+ {( n" N. g( O/ t; W8 K6 `
* 51 - AC Time Overcurrent Relay" k$ l% F* q# C. _+ s0 W
* 52 - AC Circuit Breaker
/ B& q- C% Y/ E C: P * 53 - Exciter or DC Generator Relay
* r! }+ S% ~$ S1 k( a ^8 N" A * 54 - High-Speed DC Circuit Breaker
& W: | d: N' r * 55 - Power Factor Relay
* G& g6 k; a. K& E * 56 - Field Application Relay* W& d2 w$ g& k: Y: K
* 59 - Overvoltage Relay; [8 s* _5 g$ [* {, a
* 60 - Voltage or Current Balance Relay! A) C, W9 q! z5 T
* 61 - Machine Split Phase Current Balance: J1 {* a8 f" _. v, `, D8 Q
* 62 - Time-Delay Stopping or Opening Relay, G$ f- N& t0 T" ?
* 63 - Pressure Switch
v0 o% u" j9 J2 ]- G6 G * 64 - Ground Detector Relay
* p* \( k% n- ~" t8 [$ M8 {' Q) Y * 65 - Governor
4 H* [. g7 {# M/ u * 66 - Starts per Hour
# O: a% w. l& x7 y) z) \' O * 67 - AC Directional Overcurrent Relay v2 I) `) a, f! {7 @+ u
* 68 - Blocking Relay
x0 n' j: ]: |* W * 69 - Permissive Control Device
1 @ N' _- a7 X3 g * 71 - Level Switch
7 a3 i7 @- Q* B+ }; t: n * 72 - DC Circuit Breaker
4 o5 J# F+ d8 q* s3 L# |; g * 74 - Alarm Relay
, U6 @9 k3 q" M' c5 U8 S * 75 - Position Changing Mechanism4 j9 i% b ^% j2 _4 g6 E* v
* 76 - DC Overcurrent Relay- B7 y) v' ^1 I5 C$ f% f" j
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
& c+ M0 h" l2 N7 |* Z6 x: ] * 79 - AC-Reclosing Relay7 C1 }. Q* |$ [+ b0 \0 Z9 H: y1 x
* 81 - Frequency Relay4 N, w5 Q$ d+ O6 `) y
* 83 - Automatic Selective Control or Transfer Relay$ y( }& I, N0 G. O! k7 S
* 84 - Operating Mechanism5 E" h6 G; B( `! M0 @1 w4 f5 [0 {
* 85 - Carrier or Pilot-Wire Receiver Relay
, t& I# u7 a, @+ Z- A) S * 86 - Lockout Relay: g" i A7 p v
* 87 - Differential Protective Relay
, f" y/ Z1 Z# O) j8 ~ * 89 - Line Switch
$ U* D2 Z( R- Z+ `9 u * 90 - Regulating Device
9 @! g! {# g1 [+ W3 T- L * 91 - Voltage Directional Relay
1 `& v- }7 w$ z: z. M$ R * 92 - Voltage and Power Directional Relay* J" |6 |4 a/ Y- l- D8 w' G: e. f
* 94 - Tripping or Trip-Free Relay
! X! ?# c9 q; N9 A * 95 - Reluctance Torque Synchrocheck& U, R5 S( r/ m& |5 ~
* 96 - Autoloading Relay |
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