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List of Device Numbers
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* 1 - Master Element
. a |6 z+ d* V9 C- W( s * 2 - Time Delay Starting or Closing Relay! M3 _! b9 s7 ~( Z# ]% r D
* 3 - Checking or Interlocking Relay5 J! I3 }1 G: i
* 4 - Master Contactor) x8 l8 V! c& Q6 E' C* z6 b
* 5 - Stopping Device) m) I, |' i6 K4 O! W4 G2 }
* 6 - Starting Circuit Breaker
* S5 }5 R3 `1 p! t: m" M% Y * 7 - Anode Circuit Breaker& ]3 P+ d* h, a: \) y8 S( p
* 8 - Control Power Disconnecting Device
6 p) x- h$ q Z& G& Q2 L6 D% D * 9 - Reversing Device
" g* P! j7 U+ @ * 10 - Unit Sequence Switch
& B% j# m( T9 Y" n& s' S * 12 - Overspeed Device
' r+ N4 K( ]# v8 u5 D+ ~- @2 }6 I * 13 - Synchronous-speed Device9 V# |$ E0 ]. V; j, ]6 I% y
* 14 - Underspeed Device: _ y4 j4 H* v# j k5 I( u
* 15 - Speed - or Frequency-Matching Device$ F# I+ z% B2 @8 V2 T% c2 J
* 21 - Distance Relay/ S* c1 {* q' n7 D1 K2 U
* 23 - Temperature Control Device
( H+ o/ z e1 V+ |* v1 _* n * 25 - Synchronizing or Synchronism-Check Device
- c- f6 \5 U3 f% ~* g! v * 26 - Apparatus Thermal Device2 x% G+ s/ o1 q) Z& x% w! y# C
* 27 - Undervoltage Relay
7 f3 L; f9 h$ a T# x * 29 - Isolating Contactor/ ]2 t# T% j$ c6 E! C4 C
* 30 - Annunciator Relay0 w4 |2 `( ~ u& J
* 32 - Directional Power Relay
$ O; v) K; n# \/ w$ i * 36 - Polarity or Polarizing Voltage Devices7 } n( N& H/ b) b, i) E
* 37 - Undercurrent or Underpower Relay
S& q% O7 i0 U0 M2 }4 P* ]8 U * 38 - Bearing Protective Device/ G( c9 j# I4 l$ `
* 39 - Mechanical Conduction Monitor* g$ i+ g; J! Z9 P7 r
* 40 - Field Relay5 n, s' v& S9 I% G
* 41 - Field Circuit Breaker
2 w$ |2 L- r; J/ P: K2 D0 E * 42 - Running Circuit Breaker0 k9 z+ E4 A& ^/ u; S' {
* 43 - Manual Transfer or Selector Device
. a- j3 z6 S% ^ * 46 - Reverse-phase or Phase-Balance Relay( u2 A' u6 u0 w C0 @9 C
* 47 - Phase-Sequence Voltage Relay2 g" `% ~3 r8 t
* 48 - Incomplete-Sequence Relay
/ ^5 S) ]) s& D. X * 49 - Machine or Transformer Thermal Relay
3 n+ D, u& T2 s * 50 - Instantaneous Overcurrent
! _9 c9 ]9 c/ D3 J: D% S * 51 - AC Time Overcurrent Relay+ S9 I0 C# k, z x; ^
* 52 - AC Circuit Breaker0 i+ U2 x9 t0 S# _' i# d! g
* 53 - Exciter or DC Generator Relay- R% V, G- ~& n
* 54 - High-Speed DC Circuit Breaker
/ \. ]# ^* x& |3 O; j * 55 - Power Factor Relay
; I/ F6 _- ^8 P" u. y * 56 - Field Application Relay
- }+ g; E" a, S/ B% y# `% ? * 59 - Overvoltage Relay
, p8 H, @- B) L$ j * 60 - Voltage or Current Balance Relay
, J; O$ P+ p1 }6 ~ * 61 - Machine Split Phase Current Balance6 |* v: b3 v1 K& ~" i
* 62 - Time-Delay Stopping or Opening Relay6 ~# V, q6 q* z2 v
* 63 - Pressure Switch
' ]" d- a' L; n! x * 64 - Ground Detector Relay' _* v& r: ?' e. |! E
* 65 - Governor
' S+ i6 F( k" w6 i! Z* b: l3 g * 66 - Starts per Hour
2 | l8 f% p+ |; H * 67 - AC Directional Overcurrent Relay! X6 S* w7 ~( S! ~
* 68 - Blocking Relay* [, M2 i p( C' Y2 k, G" T& g) J
* 69 - Permissive Control Device
9 Y% I5 u, l% q/ O6 Y * 71 - Level Switch2 `* e+ [3 e! _. r3 b
* 72 - DC Circuit Breaker
6 t( G$ A. i. G% d * 74 - Alarm Relay
! f$ W- m( h. D * 75 - Position Changing Mechanism y( W2 C! N2 c) J, k1 e3 N$ p) x
* 76 - DC Overcurrent Relay
0 ?& f9 n- @. B4 c! U3 F+ c$ X * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
4 @9 F! O: Z1 X! o8 ] * 79 - AC-Reclosing Relay6 x( Z x5 t* h; U5 d
* 81 - Frequency Relay. b$ A# G' z4 b. F* f. R" s
* 83 - Automatic Selective Control or Transfer Relay, c9 n( Z. w7 S; q. W5 N) h
* 84 - Operating Mechanism R7 f: H) D; L/ A! s0 A
* 85 - Carrier or Pilot-Wire Receiver Relay. r4 y5 J9 ^& ~
* 86 - Lockout Relay
/ H+ H6 M" j0 y$ @ * 87 - Differential Protective Relay! Z: t: q8 e# [2 e8 h0 Q0 _4 ?
* 89 - Line Switch
' e2 a4 c+ p+ J. T * 90 - Regulating Device X( R6 o9 N, B" l+ \# e- x# r
* 91 - Voltage Directional Relay
/ H) _+ h2 q7 R3 I/ G5 b5 A * 92 - Voltage and Power Directional Relay0 t7 B9 m Z" l
* 94 - Tripping or Trip-Free Relay
2 d- r, Z+ |# F! @ * 95 - Reluctance Torque Synchrocheck# O! t1 @8 a3 T% t9 v6 q9 P8 N
* 96 - Autoloading Relay |
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