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List of Device Numbers
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9 [9 u1 R; S4 ^+ f
: o7 i; X6 G4 k y, e * 1 - Master Element
$ p; B* K0 W! E l. u * 2 - Time Delay Starting or Closing Relay) I3 Z1 \. v3 Z9 H* e
* 3 - Checking or Interlocking Relay
3 Z; v3 G& W* F1 |% t$ Q * 4 - Master Contactor
! V: d% I. U- n5 ]" \) p; b * 5 - Stopping Device* N' |. @: {! R8 d
* 6 - Starting Circuit Breaker: @+ c% S* g* H. v
* 7 - Anode Circuit Breaker
' D2 {% H+ T* p. p7 V3 q * 8 - Control Power Disconnecting Device# p2 L, c! y" f( W: f' `
* 9 - Reversing Device, b. a @; Y" `
* 10 - Unit Sequence Switch
* W [1 G' r# s' l9 p9 ~ * 12 - Overspeed Device
# o) ?( w/ _8 l0 G* w$ \0 W * 13 - Synchronous-speed Device
* `/ S) z* [3 U * 14 - Underspeed Device: W0 W, I. Y& {, ~
* 15 - Speed - or Frequency-Matching Device$ y& Q& x/ ]; @& {7 W; Z2 e4 n8 a
* 21 - Distance Relay
; {3 b. z) V, n& r4 y9 l7 z! `, l5 s2 ^ * 23 - Temperature Control Device
8 R1 m! ^+ H2 s: J t3 W * 25 - Synchronizing or Synchronism-Check Device" O) @2 e3 T% h. m
* 26 - Apparatus Thermal Device
# Q4 E m6 i& x) s1 D# r * 27 - Undervoltage Relay
: X" l9 A/ H! T8 z7 q5 _( I* r * 29 - Isolating Contactor b; Y# n' \9 V7 [, t& y3 D# [
* 30 - Annunciator Relay5 O3 G5 s* P E/ S% O: n3 ?$ J
* 32 - Directional Power Relay) |( r8 _! V* A5 N" ^) i
* 36 - Polarity or Polarizing Voltage Devices4 |4 J; }& A# Y& z
* 37 - Undercurrent or Underpower Relay, w4 U' b R$ t/ x
* 38 - Bearing Protective Device6 P4 c" Q9 X+ I
* 39 - Mechanical Conduction Monitor! q% Y" F, E V$ \
* 40 - Field Relay
% s# m+ a+ o" d3 e$ E * 41 - Field Circuit Breaker+ H$ b, `8 k8 ?# M( ]2 F n
* 42 - Running Circuit Breaker
- U; H: S& p0 e) @6 C * 43 - Manual Transfer or Selector Device4 O7 H2 O5 k7 ] W4 p
* 46 - Reverse-phase or Phase-Balance Relay4 s, P, n- z6 @: ?' s' X+ v
* 47 - Phase-Sequence Voltage Relay
, g$ V. o8 e% q$ A% _% }' W6 t * 48 - Incomplete-Sequence Relay
, Z/ z( Z6 f% y" K" v * 49 - Machine or Transformer Thermal Relay
4 f& t( @0 S" c" [ * 50 - Instantaneous Overcurrent
Y% M L7 E+ o( I/ T * 51 - AC Time Overcurrent Relay
1 @7 _+ `' T6 Q* P7 n5 N * 52 - AC Circuit Breaker% W9 r2 Y8 }6 r
* 53 - Exciter or DC Generator Relay* e4 S1 A5 ^. H3 ~4 [% G ?
* 54 - High-Speed DC Circuit Breaker) C' z+ U8 k; A% L; E0 V% T
* 55 - Power Factor Relay4 [. s3 K* S6 \' L7 R1 d' l
* 56 - Field Application Relay& p3 g! Q8 i: q" c7 x
* 59 - Overvoltage Relay% w' ^' Z1 G k
* 60 - Voltage or Current Balance Relay
8 N% ?7 ], k! n9 j * 61 - Machine Split Phase Current Balance; N( ^6 p/ T w& X" | r( }. E
* 62 - Time-Delay Stopping or Opening Relay
* ~( q0 Z/ A! v K$ q5 D * 63 - Pressure Switch0 |/ q$ Y+ c# b! G% {
* 64 - Ground Detector Relay0 z, R7 Q: J2 U/ T/ r" I. O# t
* 65 - Governor# ~6 a3 t9 T6 [7 f3 N8 D/ l J
* 66 - Starts per Hour: ]6 d w$ y5 K, H
* 67 - AC Directional Overcurrent Relay
0 M- t% v3 G, i+ J9 n7 Y2 M, z * 68 - Blocking Relay
# T4 [. W* O- E- V0 v5 { * 69 - Permissive Control Device
* I3 v5 P" T9 [3 X4 L8 ?# z6 Z * 71 - Level Switch$ i h0 V- s3 |: ?; F
* 72 - DC Circuit Breaker
$ { \& I0 C" M9 j * 74 - Alarm Relay! f2 Y4 c# t5 N) N/ L
* 75 - Position Changing Mechanism0 n8 ?" M; B1 m9 d) _0 H
* 76 - DC Overcurrent Relay9 S4 }! R# z4 P& W1 i7 ]. Y
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
. }7 I) m" d1 D * 79 - AC-Reclosing Relay* i4 S F7 ~$ G, M+ |% j m: k( o
* 81 - Frequency Relay
( K" ?7 n$ @, b+ Z( u * 83 - Automatic Selective Control or Transfer Relay0 ]7 _. g7 D9 G( Z: T
* 84 - Operating Mechanism2 V; w! f& x. W x! D S
* 85 - Carrier or Pilot-Wire Receiver Relay
' U9 K7 K6 }4 ^4 T0 @: S * 86 - Lockout Relay: r1 Z' J0 S/ o% a( z0 v. ^
* 87 - Differential Protective Relay
' @+ N) I" u, U/ a * 89 - Line Switch) y1 N2 B, Y. o( |- |; m0 C
* 90 - Regulating Device
3 y" l% Q9 `* A8 ^% w% `9 T3 A! C+ v * 91 - Voltage Directional Relay4 ^) N, b5 g% f4 s6 o) U. ^
* 92 - Voltage and Power Directional Relay6 O1 O! t9 A( B
* 94 - Tripping or Trip-Free Relay$ @ A; |, C- E4 Z+ k* P- `* e0 }. P
* 95 - Reluctance Torque Synchrocheck+ u" a: v! ^( Y! n6 |$ Z. J
* 96 - Autoloading Relay |
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