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List of Device Numbers
6 W. O5 ]( T) s1 mClick to learn more...$ S, w- M& n+ Q! `+ F
4 Y% K) b1 f3 i- k5 h* b: _ * 1 - Master Element+ L3 r* D( I i+ w" v
* 2 - Time Delay Starting or Closing Relay" x$ q3 S* u: W7 |+ J0 ]
* 3 - Checking or Interlocking Relay
4 Y/ Q+ n C" G, j" {' s * 4 - Master Contactor
, q) l" e/ `7 \/ O * 5 - Stopping Device
7 y1 J9 L$ W5 I. b * 6 - Starting Circuit Breaker- U. {+ I: r" @! x# J
* 7 - Anode Circuit Breaker) O( ?3 p: h; }' `1 Z( X
* 8 - Control Power Disconnecting Device
' V0 s3 j. o! c * 9 - Reversing Device( a4 p8 L5 v, _# s+ K6 U1 d. f
* 10 - Unit Sequence Switch' j* k% c8 _* R
* 12 - Overspeed Device; ^' _/ i) u( e9 F
* 13 - Synchronous-speed Device# F9 u3 b4 C& g; q, z1 k' O
* 14 - Underspeed Device$ ^% ?& @+ V3 i S: \3 Y
* 15 - Speed - or Frequency-Matching Device
: T: s; [! P) C7 S+ E9 U * 21 - Distance Relay; u7 j5 \; L3 q0 Q5 j
* 23 - Temperature Control Device
2 V! l+ B9 c6 u3 l- _) c * 25 - Synchronizing or Synchronism-Check Device4 o7 Z( \+ s7 ^
* 26 - Apparatus Thermal Device
$ e i# c5 ^) J S) j * 27 - Undervoltage Relay9 ]+ J7 u4 }, C$ \5 W2 [
* 29 - Isolating Contactor
K! @6 K" x- j+ l$ O- }8 Q9 B( L * 30 - Annunciator Relay0 H! `% `% ^' a7 v
* 32 - Directional Power Relay. q1 Q/ B: n1 D# q3 G
* 36 - Polarity or Polarizing Voltage Devices
# G0 z9 v/ [( q: h8 b3 F * 37 - Undercurrent or Underpower Relay6 V, T4 d3 ^9 T1 z* f% O1 u, D% ?
* 38 - Bearing Protective Device
0 D: v6 j* t2 M * 39 - Mechanical Conduction Monitor
H: N4 g/ I0 x3 S. b/ u * 40 - Field Relay
2 T, J* _& A5 p+ v$ o * 41 - Field Circuit Breaker' {. @& R# |* B2 q
* 42 - Running Circuit Breaker
, T1 u$ y- ~0 t1 j) B k * 43 - Manual Transfer or Selector Device
6 g' f, s1 ^: D; {" B; X& }/ O * 46 - Reverse-phase or Phase-Balance Relay
( Z9 A. k0 }" j R( J( |" H# p * 47 - Phase-Sequence Voltage Relay1 P ^6 @; s+ c# I
* 48 - Incomplete-Sequence Relay
" x6 z3 K* Y* P * 49 - Machine or Transformer Thermal Relay: }7 E+ K. N/ w1 ~! s% m
* 50 - Instantaneous Overcurrent
2 @- v8 }3 g" E A, ~" S( b * 51 - AC Time Overcurrent Relay
/ n' c1 U9 T2 m, X( h- [ * 52 - AC Circuit Breaker8 I, y6 V; x2 l, H) P% ?% T0 B
* 53 - Exciter or DC Generator Relay
# ~& x) Z9 S2 r# A# w2 ] * 54 - High-Speed DC Circuit Breaker
, p5 B5 f5 u1 E' u, p0 a, L2 d) ? * 55 - Power Factor Relay0 Y- V6 z$ J# l2 w
* 56 - Field Application Relay, K$ b) q3 T( D) I& D* ~! t8 N
* 59 - Overvoltage Relay' r0 w4 b9 _4 ~
* 60 - Voltage or Current Balance Relay* n' n0 G; m* { h
* 61 - Machine Split Phase Current Balance1 B/ N9 n1 o3 A" u" j9 H4 q
* 62 - Time-Delay Stopping or Opening Relay" b# X" E. P/ j b( A4 ? J: `
* 63 - Pressure Switch+ T1 S S- k9 V: F
* 64 - Ground Detector Relay1 l, X* k% ^1 A' h9 r
* 65 - Governor1 r7 | E ]6 e; f& U" N) L0 i
* 66 - Starts per Hour
! T4 e5 N% q+ w" g. _4 o * 67 - AC Directional Overcurrent Relay0 {) g w' e+ ]0 R; @- `" P' F
* 68 - Blocking Relay
" @5 F3 R+ j) H s; z2 Q * 69 - Permissive Control Device* Y6 A A' m$ k+ @2 f: o5 m
* 71 - Level Switch* r# ~ _2 |1 t5 u1 z
* 72 - DC Circuit Breaker/ I. K' u3 k$ y. U' V
* 74 - Alarm Relay
, T- o& u5 D0 Z- ]* o * 75 - Position Changing Mechanism
" V1 _; H8 E" ~6 S * 76 - DC Overcurrent Relay
# g* I2 ~3 E% p J8 q) V y3 q * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay& t- W# M% ?- k/ f- H% V* a7 \4 }% F
* 79 - AC-Reclosing Relay
a g9 W! z) k * 81 - Frequency Relay+ P: I5 S$ }7 w& E
* 83 - Automatic Selective Control or Transfer Relay
( f/ M( B. \/ E# Y# c& S * 84 - Operating Mechanism
) E/ ?: b" T4 j * 85 - Carrier or Pilot-Wire Receiver Relay+ t1 B9 r' V( w) w2 n
* 86 - Lockout Relay) ~" E+ i; J: T8 |$ t7 g
* 87 - Differential Protective Relay
1 w! ~) p* S- w0 A* b * 89 - Line Switch
@' }+ Z) H- {, M$ W j0 { * 90 - Regulating Device
3 ] p' m A0 \8 S# h( u * 91 - Voltage Directional Relay3 M* w Q( B' F# M% k: b8 e* m1 N
* 92 - Voltage and Power Directional Relay, p1 d" u: T. y0 |3 S
* 94 - Tripping or Trip-Free Relay3 g: f/ I, [/ a9 w" a
* 95 - Reluctance Torque Synchrocheck/ C z9 M$ m' R8 H; s
* 96 - Autoloading Relay |
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