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List of Device Numbers
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' L _6 x; m2 y6 i' d
% i! ^6 Z9 y" U) H | * 1 - Master Element- j; H: |6 }2 X! y
* 2 - Time Delay Starting or Closing Relay
+ e0 g) p, ]# f * 3 - Checking or Interlocking Relay: Z7 p' q0 l3 p. X- b% m
* 4 - Master Contactor2 F4 k* S8 R% N4 P8 U
* 5 - Stopping Device7 c7 w+ M, h& I" A) b. q
* 6 - Starting Circuit Breaker
% g m9 {% D" i- j. s# D * 7 - Anode Circuit Breaker& U& u+ L/ y# T, a2 S) }1 L
* 8 - Control Power Disconnecting Device
9 K) E2 p9 T* B# F- u' H Z * 9 - Reversing Device" E1 [. l2 }1 h
* 10 - Unit Sequence Switch% A* ]& g3 B9 ?1 B/ w
* 12 - Overspeed Device
! ]* F/ s5 @+ O) ?9 M) x * 13 - Synchronous-speed Device( h& K- P9 }$ X( h* z
* 14 - Underspeed Device& T" o9 u, _" Z9 `
* 15 - Speed - or Frequency-Matching Device
3 W3 S( ~. @, p2 `5 W * 21 - Distance Relay8 |- z9 }2 l) v
* 23 - Temperature Control Device( x( }2 T! }4 ~) J
* 25 - Synchronizing or Synchronism-Check Device J, {# R2 v7 c) {* ~" I* L9 P. O
* 26 - Apparatus Thermal Device0 |1 p1 @5 }! j' I% |
* 27 - Undervoltage Relay
5 K C/ z F8 C) J- @ * 29 - Isolating Contactor
w) s6 @; I! f0 W* Y+ M1 m * 30 - Annunciator Relay* w- c3 l- i6 K
* 32 - Directional Power Relay
3 U% t& A# t* B( o * 36 - Polarity or Polarizing Voltage Devices
' {: A+ p8 a# U! m8 B8 Q * 37 - Undercurrent or Underpower Relay; C/ k: @) `' b3 a; k" I l5 \! e
* 38 - Bearing Protective Device/ E- r7 J# ?. x% S
* 39 - Mechanical Conduction Monitor
- \, {7 T1 Q0 s2 Z * 40 - Field Relay
+ j8 ]2 Z) w3 d) x$ U4 W/ [6 Z * 41 - Field Circuit Breaker
- g) n J* A, H5 K, x4 @1 E * 42 - Running Circuit Breaker }, H) Y ~ w3 m) F/ B
* 43 - Manual Transfer or Selector Device
. S' k) v, u" y+ j1 ^5 I$ N* S" p7 C" B * 46 - Reverse-phase or Phase-Balance Relay
& ^: [8 x3 n; S! N# }: z7 c * 47 - Phase-Sequence Voltage Relay
% n* ~) @; Y P$ g L) D' ^( W" `$ F * 48 - Incomplete-Sequence Relay( ~) N) p8 G6 l- y1 `7 Y5 w! v2 i
* 49 - Machine or Transformer Thermal Relay
# l% m7 D' ~: q* I. J7 {& k6 H9 u * 50 - Instantaneous Overcurrent
* a7 f# I J( E7 w$ J * 51 - AC Time Overcurrent Relay7 U% n% v) E! p3 v2 G% q) S
* 52 - AC Circuit Breaker
$ X1 O; [/ @ V. z: |. t * 53 - Exciter or DC Generator Relay# a& s& D. F( h5 }8 E0 ^
* 54 - High-Speed DC Circuit Breaker
& I0 y/ M* }; z! R, s+ D i * 55 - Power Factor Relay
6 e/ |$ N: T0 x% c4 a* p+ o/ ^4 P * 56 - Field Application Relay
' G- q1 C) D4 [5 j * 59 - Overvoltage Relay" {- c4 N9 v% ~+ \8 o
* 60 - Voltage or Current Balance Relay
4 [1 q0 ^. R2 L * 61 - Machine Split Phase Current Balance6 Y' `, f3 K& r+ F. y& H8 H* w
* 62 - Time-Delay Stopping or Opening Relay
! q1 L+ l) B2 @2 L# H! t * 63 - Pressure Switch5 ~* @ L' i/ E: m
* 64 - Ground Detector Relay7 t: h- f$ n' _9 S% H& h$ ]2 J
* 65 - Governor
6 H$ a5 V! t" |8 G! x. n * 66 - Starts per Hour
- F: q6 M" V, j: Y6 ] * 67 - AC Directional Overcurrent Relay
5 `# x: C& C1 m/ _: L4 N * 68 - Blocking Relay
- [2 y; y" l$ }$ t1 Q% E * 69 - Permissive Control Device
2 E! ~) ~- ]0 ^, q0 d * 71 - Level Switch
/ _, l: K7 R- Z; a. G: ] z * 72 - DC Circuit Breaker
0 b. r3 U& j$ C' H- V* D) J$ x * 74 - Alarm Relay6 b2 N, o+ f4 W% `6 |1 L
* 75 - Position Changing Mechanism
2 z4 D) j! a3 C) [ W6 }8 n% E0 D * 76 - DC Overcurrent Relay
* C( P6 h ?' |" ?3 H0 @ * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay- u2 M- [% A3 i" @0 P1 j7 f8 G
* 79 - AC-Reclosing Relay; t4 Q6 }! x3 ^% }. k% n: V+ a
* 81 - Frequency Relay
2 I/ d3 U$ s4 m% t2 q9 i4 F# x * 83 - Automatic Selective Control or Transfer Relay
& t1 @) i6 R N R q * 84 - Operating Mechanism% S7 c1 ^4 |- o; L' _
* 85 - Carrier or Pilot-Wire Receiver Relay
- O, U9 ^. N6 U * 86 - Lockout Relay
, |8 E- i( Y+ h) O * 87 - Differential Protective Relay7 s0 c, z: D1 A% O3 F
* 89 - Line Switch8 }6 g. w6 d7 }/ {4 l, h
* 90 - Regulating Device3 g8 \) _8 T' v) @
* 91 - Voltage Directional Relay
( m% \ Y8 C4 K2 y& G& C * 92 - Voltage and Power Directional Relay9 k _9 v5 D, D; m" s% y- v( M& Q
* 94 - Tripping or Trip-Free Relay" {* M3 ?9 R" Z; r7 A
* 95 - Reluctance Torque Synchrocheck0 S8 K1 G: D: |: F& d
* 96 - Autoloading Relay |
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