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List of Device Numbers
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* 1 - Master Element
8 `% q6 i0 [# |& d' M! v * 2 - Time Delay Starting or Closing Relay
8 w. T( O6 E+ z3 @ * 3 - Checking or Interlocking Relay
# v* a+ t5 U1 ?7 W' \ * 4 - Master Contactor' Y0 @! C7 k/ m" y" b0 }
* 5 - Stopping Device
j% g# S ~, n* ?' {6 V * 6 - Starting Circuit Breaker, B* L- v" l6 c/ O6 O' D
* 7 - Anode Circuit Breaker
1 A7 N& g1 |: a# P * 8 - Control Power Disconnecting Device2 \% d& a; e9 c3 b8 h0 N9 ?( {
* 9 - Reversing Device' N! y/ P/ K/ a0 P
* 10 - Unit Sequence Switch, _3 ]1 G8 g$ a( t/ U- d
* 12 - Overspeed Device
$ W1 X. L, r; ?! H+ v' @- m * 13 - Synchronous-speed Device8 R, N2 o, x9 d) X3 T" i& D
* 14 - Underspeed Device3 E, a# @/ U: ?4 I! M
* 15 - Speed - or Frequency-Matching Device
& Z. L! g7 D8 d7 I. C% ] * 21 - Distance Relay
9 Q6 V6 A g5 _: ~" |- `( Z * 23 - Temperature Control Device# ?8 `5 U) n- r6 p1 M+ S* l" P
* 25 - Synchronizing or Synchronism-Check Device5 M0 p" Z r3 r5 B
* 26 - Apparatus Thermal Device
* ^* z I: p; V! H * 27 - Undervoltage Relay
0 d% E y; F8 p8 F2 }! r; R( [ * 29 - Isolating Contactor
- Z' @& Z T1 @4 o7 R H * 30 - Annunciator Relay
4 S# s+ i2 w! {/ @ }. J * 32 - Directional Power Relay
* s* a/ f' C2 }0 a% ~) }% L * 36 - Polarity or Polarizing Voltage Devices
: W! A. q& {" b q, o0 A5 S * 37 - Undercurrent or Underpower Relay8 @7 Q9 Z, ]% X7 O6 j
* 38 - Bearing Protective Device* m+ ?5 m# h4 B
* 39 - Mechanical Conduction Monitor
' m! n/ G4 r8 ]" | * 40 - Field Relay. w9 B5 |) V! o$ \2 a' g
* 41 - Field Circuit Breaker2 T# ?' L$ [$ J7 [- D H
* 42 - Running Circuit Breaker" [' d1 U7 j& f
* 43 - Manual Transfer or Selector Device" x" M; O, d+ c* V- t" s. A$ a
* 46 - Reverse-phase or Phase-Balance Relay9 \, `6 t" T F$ A1 ~
* 47 - Phase-Sequence Voltage Relay" C* [5 v7 n" T, ~$ t% [
* 48 - Incomplete-Sequence Relay D+ v; T3 T- L1 V: i, i
* 49 - Machine or Transformer Thermal Relay: @" [2 S$ T/ i1 H
* 50 - Instantaneous Overcurrent1 K" G4 C- j/ h# Q7 s" H U1 Y
* 51 - AC Time Overcurrent Relay' H3 T+ d8 r" [, v+ Y
* 52 - AC Circuit Breaker
" Q0 g' ~+ h w% y * 53 - Exciter or DC Generator Relay
) Y) j4 P' U! f8 t1 d * 54 - High-Speed DC Circuit Breaker6 D- c1 k5 m) }' V- c
* 55 - Power Factor Relay" U# u* f4 q( ?9 k4 @1 V
* 56 - Field Application Relay; n* x7 P! |6 {' C: Z2 Q
* 59 - Overvoltage Relay
1 @# A0 L1 M+ } * 60 - Voltage or Current Balance Relay# t# b u5 F6 Y W( ?1 ?
* 61 - Machine Split Phase Current Balance8 G, K5 f, o) z# W" n4 J
* 62 - Time-Delay Stopping or Opening Relay4 d( x8 a) O1 U! V1 P* P8 v
* 63 - Pressure Switch- X) I, H5 b- p: z' i
* 64 - Ground Detector Relay
& y( M" ?& Z. p * 65 - Governor2 C) g( u9 X% G( I& y% D
* 66 - Starts per Hour' i, a0 A3 s- o: V: p W" @5 x
* 67 - AC Directional Overcurrent Relay5 ?/ F6 g! O1 }+ p- ?' E1 H: R5 E6 r
* 68 - Blocking Relay
: y7 V( a5 ^5 X+ Q * 69 - Permissive Control Device
T7 e6 j( A$ u4 w5 \& L0 c0 K6 F) Q * 71 - Level Switch/ V0 U2 F3 A F; R
* 72 - DC Circuit Breaker
$ ` k6 G9 P- y) o * 74 - Alarm Relay
/ r0 r! v" G6 b# Z * 75 - Position Changing Mechanism
; j, x9 l; {( d9 B r * 76 - DC Overcurrent Relay
5 R' p9 |$ J% S * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
+ @2 I0 [9 C9 Q9 x0 y! E * 79 - AC-Reclosing Relay# i+ a/ X6 `" z G: M
* 81 - Frequency Relay
. G6 K) Q! a) X * 83 - Automatic Selective Control or Transfer Relay
; }" B- F! ^" Z/ g4 r n * 84 - Operating Mechanism
& L7 h( B, m( |3 T * 85 - Carrier or Pilot-Wire Receiver Relay6 J* }" ]$ t. b7 ]; \% X
* 86 - Lockout Relay6 w- F) K& i8 A1 |, |0 R! J
* 87 - Differential Protective Relay
2 d/ Y1 L3 T2 P& y * 89 - Line Switch
) L. J/ M# M7 t0 X. H* B * 90 - Regulating Device
% J& C7 ]) w' J+ U * 91 - Voltage Directional Relay9 x, h+ G0 N# F' q
* 92 - Voltage and Power Directional Relay8 E: G! D: u) d# y: M0 ~
* 94 - Tripping or Trip-Free Relay
1 [- f+ U1 m# @8 { * 95 - Reluctance Torque Synchrocheck5 o" C( t$ q* v3 |
* 96 - Autoloading Relay |
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