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List of Device Numbers
; F& _: r8 G, x/ W/ ]Click to learn more...2 o) a* ^7 h3 p% }) o* m; ~
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* 1 - Master Element
. C$ {3 p6 ]. K" J" ~6 T' [ * 2 - Time Delay Starting or Closing Relay# y6 Q6 y/ S9 t3 C2 Z1 ]
* 3 - Checking or Interlocking Relay
8 N. `8 q" |' K1 ?8 @& R0 v * 4 - Master Contactor3 Z% e7 E, G; i
* 5 - Stopping Device
2 v+ H) D7 }, M% [2 @$ u4 ^ * 6 - Starting Circuit Breaker7 e% z( G0 ~" F
* 7 - Anode Circuit Breaker0 x c* x6 e0 c f* C" _1 u
* 8 - Control Power Disconnecting Device7 I* N. X# l/ e4 V1 w/ q
* 9 - Reversing Device
3 y% O7 d/ b# Z" J: v * 10 - Unit Sequence Switch
7 _ Y- \, q' P* m" j6 t * 12 - Overspeed Device
0 N- I' K6 Z3 G, n. r * 13 - Synchronous-speed Device+ u+ z$ e$ t4 \1 N: C) M
* 14 - Underspeed Device
" n% e0 B! a7 ^" F7 C' ^ * 15 - Speed - or Frequency-Matching Device
7 o; N+ t L3 V/ D * 21 - Distance Relay
! a7 I& U/ _* I8 A' p. u * 23 - Temperature Control Device
; G( {! w1 {8 S" g: F8 j * 25 - Synchronizing or Synchronism-Check Device
1 U0 k5 s' J3 |' c' g9 f7 K" _ * 26 - Apparatus Thermal Device5 d8 R+ c; U7 i
* 27 - Undervoltage Relay, U' F- l# p, r$ \- [" i
* 29 - Isolating Contactor/ A( h8 f7 v, I, F8 |% u6 k
* 30 - Annunciator Relay
# f* R. \; \2 ]. v# u7 s" K * 32 - Directional Power Relay
# g5 v( `5 m# G. w; j- Y0 o * 36 - Polarity or Polarizing Voltage Devices8 h3 F% u* q% l/ U- o
* 37 - Undercurrent or Underpower Relay; i3 P3 v: H$ q; }" l% j* m
* 38 - Bearing Protective Device
1 U! _* z# ^4 @, O% L" S1 | O( j * 39 - Mechanical Conduction Monitor+ N$ L' @' M: H4 w' U0 W
* 40 - Field Relay6 f: m/ L+ m& A3 }1 G
* 41 - Field Circuit Breaker" u1 A5 y$ [5 _. B
* 42 - Running Circuit Breaker6 A( g9 G3 E# P0 N; ^0 e
* 43 - Manual Transfer or Selector Device; B/ i+ W1 v) O. R7 M& j \- E! G
* 46 - Reverse-phase or Phase-Balance Relay; I @6 r. _4 Q9 |
* 47 - Phase-Sequence Voltage Relay0 \: ` C: \5 O4 T4 E7 K' y/ o9 J# N
* 48 - Incomplete-Sequence Relay2 I$ o" z. M6 @- X; R8 f) i4 W7 L$ B
* 49 - Machine or Transformer Thermal Relay, s* v3 i+ k! `5 J( E8 `
* 50 - Instantaneous Overcurrent3 |* y, M* ?& S1 R/ h" d
* 51 - AC Time Overcurrent Relay9 d5 q- {' ^ _0 k0 j7 k3 I
* 52 - AC Circuit Breaker% N. {+ @" p2 x H% n6 `; E
* 53 - Exciter or DC Generator Relay
) x: P P; O' Q3 T+ ~" v- I9 g * 54 - High-Speed DC Circuit Breaker# s. L, Z9 D; O c
* 55 - Power Factor Relay, [9 W0 r& P% k6 \( L
* 56 - Field Application Relay- o _% T* f. l0 g, K& M. [" u
* 59 - Overvoltage Relay& ]$ n: T. i% r
* 60 - Voltage or Current Balance Relay* {3 l$ ~+ N" s7 w
* 61 - Machine Split Phase Current Balance- U3 K" f0 y) m. a" W% Y/ W/ G
* 62 - Time-Delay Stopping or Opening Relay: U$ J' m- ?- _
* 63 - Pressure Switch
8 S8 j8 Q/ |7 I9 h- \8 u2 _ H2 [ * 64 - Ground Detector Relay8 v& i; ^6 D% l' T0 |( W
* 65 - Governor, l7 U3 L' k1 r8 {
* 66 - Starts per Hour* _8 H/ i$ N3 b: N0 y& D8 ^9 t+ T
* 67 - AC Directional Overcurrent Relay
1 {0 S: i- J) f( L * 68 - Blocking Relay
0 X# \7 ^& E" X! Z8 D * 69 - Permissive Control Device4 _& V/ i$ h# G8 r3 d$ Z7 h4 a
* 71 - Level Switch
6 Y1 F( ^ N2 W% J1 W2 ]$ I2 V% U * 72 - DC Circuit Breaker0 I" d% i7 z, u: w
* 74 - Alarm Relay' F. K' G7 R0 K) v
* 75 - Position Changing Mechanism M+ A! _' W$ i# J' p
* 76 - DC Overcurrent Relay5 D. e1 u& `2 S
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
% D! ]5 @5 G. N4 x/ o' X& H * 79 - AC-Reclosing Relay* K& @6 s1 k) ?
* 81 - Frequency Relay
2 i5 ^. b8 g3 ^7 r7 t& O * 83 - Automatic Selective Control or Transfer Relay6 K6 W% @0 w7 M( p4 c9 W+ f+ s
* 84 - Operating Mechanism
+ Q# U# C* K% b * 85 - Carrier or Pilot-Wire Receiver Relay
. U9 e+ E) v# E) r! p * 86 - Lockout Relay
" D$ N, w# H: P; v4 D2 s+ H3 d4 g * 87 - Differential Protective Relay
- O# ^2 L; ?. q% F& J! c7 { * 89 - Line Switch
! s7 R7 X5 {: D/ L5 i * 90 - Regulating Device7 V; M4 E8 u, D5 O% A+ J8 p* Z8 [
* 91 - Voltage Directional Relay
+ g# z- P$ s! e, l * 92 - Voltage and Power Directional Relay
6 M6 |: A; }6 Z! n9 e% E7 ` * 94 - Tripping or Trip-Free Relay
' G: y& s8 y+ M9 D8 X6 x * 95 - Reluctance Torque Synchrocheck
7 t3 R0 d! `) }, l' Z# t! L * 96 - Autoloading Relay |
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