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List of Device Numbers
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3 L+ S" `( a, x: k$ G& o
% ]0 D" d6 G6 k; M! d2 ^ * 1 - Master Element+ }6 x$ T* ?1 {% h
* 2 - Time Delay Starting or Closing Relay
6 \1 B7 K6 T3 H/ u* A0 _( f * 3 - Checking or Interlocking Relay
% F: D8 C+ o7 K) Y" V5 M * 4 - Master Contactor5 D, Z4 x3 }/ r
* 5 - Stopping Device: q9 R( H: V) c8 |* ^4 |: _
* 6 - Starting Circuit Breaker
* k8 G) J, R1 H& S. H* k * 7 - Anode Circuit Breaker/ U( o" d' F$ ?6 u
* 8 - Control Power Disconnecting Device) p( C, X$ I6 S( R( }8 M; S- f
* 9 - Reversing Device; m: u3 t/ K1 ?+ R# D/ I
* 10 - Unit Sequence Switch9 y6 b! \0 k0 X, Q% ~# g9 R- Z& Y
* 12 - Overspeed Device6 A. T7 e a ?9 Y% `# D9 ~' ]7 V
* 13 - Synchronous-speed Device( l+ {6 `# X# L2 S
* 14 - Underspeed Device
; Y3 {5 R, u' X5 D' z8 a * 15 - Speed - or Frequency-Matching Device% n+ Y4 i- c1 m
* 21 - Distance Relay
' Y% T; \5 V0 G( M p, X * 23 - Temperature Control Device( k+ |) H: V$ j! j
* 25 - Synchronizing or Synchronism-Check Device
) u1 V! b6 m$ A6 ]+ } * 26 - Apparatus Thermal Device
0 @5 x4 b1 z, @- K6 \5 S * 27 - Undervoltage Relay7 c! I- M6 k) {, k
* 29 - Isolating Contactor
4 t% A5 U! q7 x0 p; w! I- _: S * 30 - Annunciator Relay
0 j; o5 p3 e6 A * 32 - Directional Power Relay0 {$ y5 V1 u. S* H5 \
* 36 - Polarity or Polarizing Voltage Devices
$ g0 J: [9 c9 n; r# D4 b) r * 37 - Undercurrent or Underpower Relay
$ C' \: L3 Z' ]% _8 i * 38 - Bearing Protective Device
$ S- {. s; h' h+ X$ C * 39 - Mechanical Conduction Monitor1 X. \% Q( Q. S6 W
* 40 - Field Relay
; o& w% ]0 e; a7 T * 41 - Field Circuit Breaker& ]9 z. D% T- e: Q. J3 |; s" ?2 y" B
* 42 - Running Circuit Breaker/ M7 k5 [$ X5 f: n0 P
* 43 - Manual Transfer or Selector Device
6 i+ n' S2 R# a9 Q; e * 46 - Reverse-phase or Phase-Balance Relay
1 l3 k& E0 e, f$ @5 i7 W/ @) ^0 Z * 47 - Phase-Sequence Voltage Relay
* Z; ~- d+ Y# z( {" L+ O7 J; r * 48 - Incomplete-Sequence Relay* U1 ` D5 v m/ k/ S7 I: B
* 49 - Machine or Transformer Thermal Relay
/ _4 X1 A* f4 ~+ o, f * 50 - Instantaneous Overcurrent
2 |9 e& s9 t% I& m/ N * 51 - AC Time Overcurrent Relay
+ p9 ] e- \# e- O* \ * 52 - AC Circuit Breaker% A0 ^1 l6 ^8 ~% {; r& }5 Z% e1 ?8 `
* 53 - Exciter or DC Generator Relay! E" M2 O$ a: R: d9 [. I
* 54 - High-Speed DC Circuit Breaker3 t$ t2 Y! H5 ?- U6 u* u: X
* 55 - Power Factor Relay, Q' q. A7 \) v& h4 ^# I( O+ I% F
* 56 - Field Application Relay
8 `* y+ _; b) q * 59 - Overvoltage Relay7 C7 W/ g+ X) d& B2 E8 J' Q
* 60 - Voltage or Current Balance Relay
5 c8 I& Z+ g$ j# ` * 61 - Machine Split Phase Current Balance
: p; N: L1 W: ?6 J$ ^ f$ M * 62 - Time-Delay Stopping or Opening Relay/ |9 j) w7 ]! T7 {- ~' v5 E
* 63 - Pressure Switch
2 F/ S$ G$ W. X* v+ C. ] * 64 - Ground Detector Relay
8 t' ^3 c7 c! I0 ~( X4 s * 65 - Governor {4 N. \+ z% D: \7 A3 }
* 66 - Starts per Hour7 q/ I" `5 K3 M
* 67 - AC Directional Overcurrent Relay! J% U9 U) p0 Q+ i! V8 N
* 68 - Blocking Relay
, Q0 W" K- E5 H" e7 h+ M ~% {3 r * 69 - Permissive Control Device, A& Q; u% o F" W
* 71 - Level Switch
1 g+ _" ~9 q, R * 72 - DC Circuit Breaker
5 O: V% V1 Q0 T* x! t * 74 - Alarm Relay
& V( O# g% r5 W# J, T/ e * 75 - Position Changing Mechanism
- I) n' G7 w0 c * 76 - DC Overcurrent Relay
' }. ?6 N* u+ V$ ]8 b * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay! D) \; _( X( C# S5 N/ H
* 79 - AC-Reclosing Relay
) y. p; N0 `9 ~7 V * 81 - Frequency Relay
: f% K9 N+ a' e * 83 - Automatic Selective Control or Transfer Relay: b i2 t& C( J8 V
* 84 - Operating Mechanism( O% M/ @( T3 c; ~; b; k/ `
* 85 - Carrier or Pilot-Wire Receiver Relay' t2 M. G: o4 ^% w: x# R, E
* 86 - Lockout Relay a' X/ {8 N! y8 F- Y, v
* 87 - Differential Protective Relay. x( _2 q; g% [/ U
* 89 - Line Switch- S) j+ D4 }9 Q& d4 P* Q: G
* 90 - Regulating Device
. P. D) o n) A6 i+ W! F D& @* { * 91 - Voltage Directional Relay+ ?/ b; w N$ m6 G
* 92 - Voltage and Power Directional Relay/ f2 R- x; f3 Y8 K' l" C
* 94 - Tripping or Trip-Free Relay$ A3 H* r4 B1 f. M( y# Q
* 95 - Reluctance Torque Synchrocheck
7 n! w, |: t8 I4 Z * 96 - Autoloading Relay |
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