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List of Device Numbers
7 t0 d7 V- V" W7 _. KClick to learn more...7 T4 C! e' Z) d7 ^/ ?
6 Z+ N. p% ]1 j, v7 ?2 `+ [9 ] * 1 - Master Element
, R" T) J$ z0 @! M5 Z * 2 - Time Delay Starting or Closing Relay
1 v( x O. L- M" a7 j, [0 |! ^ * 3 - Checking or Interlocking Relay
4 c9 l( I" H0 S. o" V/ D: I * 4 - Master Contactor
: h6 Y! I6 u: t! e. q0 ]7 N * 5 - Stopping Device' t4 t6 j a: g) z. ?0 j( v
* 6 - Starting Circuit Breaker
f: U, I* C8 E0 F, Y * 7 - Anode Circuit Breaker
- S" ]. V3 q+ X; m/ w( d8 a7 M& Y * 8 - Control Power Disconnecting Device
, |4 ~$ ]1 v. R0 M * 9 - Reversing Device. H# r$ l3 s6 n5 R4 e! T
* 10 - Unit Sequence Switch( Y7 p( W# V0 p* [2 a
* 12 - Overspeed Device0 ?/ n7 `/ l$ ]# X! t1 T2 O
* 13 - Synchronous-speed Device
- b: K1 {. r5 @ * 14 - Underspeed Device
: |, r' c- Q4 |) k/ r' e * 15 - Speed - or Frequency-Matching Device
( D" c2 }2 p V * 21 - Distance Relay) u' j# J" V$ K4 n5 l2 g
* 23 - Temperature Control Device
* \) u' A/ G$ p) e * 25 - Synchronizing or Synchronism-Check Device7 B. n! G/ D6 u) x1 O& l. q
* 26 - Apparatus Thermal Device$ r# x- m. l6 P$ X% i) l
* 27 - Undervoltage Relay4 W5 A$ l4 m! ^5 e8 e
* 29 - Isolating Contactor
: c5 s0 i$ H1 _7 y* I' e. V * 30 - Annunciator Relay
& o9 s7 M) }5 Y1 W * 32 - Directional Power Relay
% h. y! X5 U; S * 36 - Polarity or Polarizing Voltage Devices
) b4 m; q) b7 t" {9 c * 37 - Undercurrent or Underpower Relay
( P* n- {6 S& l! v * 38 - Bearing Protective Device6 A2 h: j# q; e2 I& l. B
* 39 - Mechanical Conduction Monitor
/ l8 b6 x/ F8 Y0 l0 B. A * 40 - Field Relay
$ Z0 M- C" v, A, H* ~ * 41 - Field Circuit Breaker: x) I. J8 E1 Z9 y7 Z6 k
* 42 - Running Circuit Breaker& f! d9 q4 N4 M
* 43 - Manual Transfer or Selector Device9 `# R7 p$ J3 G0 t, q v
* 46 - Reverse-phase or Phase-Balance Relay2 {! G! e1 G8 e' q: l9 t2 s+ ]& t
* 47 - Phase-Sequence Voltage Relay
7 b: {0 o( w! l3 S8 j3 o * 48 - Incomplete-Sequence Relay
7 [/ k& E7 J% H0 z * 49 - Machine or Transformer Thermal Relay
2 @6 j: U! S) S0 f6 L& t' O, R * 50 - Instantaneous Overcurrent
# T6 J0 U% _' z& R * 51 - AC Time Overcurrent Relay# ?8 A, }4 [7 P( f
* 52 - AC Circuit Breaker
- O3 c8 @# i( r9 i2 S( X * 53 - Exciter or DC Generator Relay+ i: S( o; y( N! E' {' ]/ }
* 54 - High-Speed DC Circuit Breaker
6 _5 K& G# |4 E N * 55 - Power Factor Relay$ s" J" l3 z9 Q2 \$ }4 T D
* 56 - Field Application Relay
, z# g/ h9 e$ D9 \9 s * 59 - Overvoltage Relay$ F, ~% h# f2 L/ |5 k( i
* 60 - Voltage or Current Balance Relay
6 I: l8 L: c7 m* N2 U * 61 - Machine Split Phase Current Balance7 N) [8 \8 E0 N" M# q2 Y
* 62 - Time-Delay Stopping or Opening Relay
2 {7 h( b3 e( Z. [ * 63 - Pressure Switch
" \' z0 l0 m, J9 A4 l( J) g * 64 - Ground Detector Relay
" I/ D) E) B4 k' }! u6 \2 w' p( i' a5 m * 65 - Governor2 X- ?9 p2 p; A2 [: m
* 66 - Starts per Hour+ g. U$ C" }: d# {* C# c( Z
* 67 - AC Directional Overcurrent Relay
! ~, F8 _7 v% J1 ]/ ?6 w9 X! L * 68 - Blocking Relay
@4 X* M( b, W( u3 t; m% Z * 69 - Permissive Control Device
+ s C1 M* h5 ^2 S1 ? * 71 - Level Switch
5 _$ @; p8 B# S O, t6 b * 72 - DC Circuit Breaker
& n: I5 m: y& V0 g. j4 z * 74 - Alarm Relay
/ K3 O+ K4 r2 ?1 ] * 75 - Position Changing Mechanism5 `/ }4 v- S/ v N& ^6 i0 r
* 76 - DC Overcurrent Relay
3 C# [/ j) o i: W9 t2 q# W# M * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
+ j* h2 h6 i, y* i1 I * 79 - AC-Reclosing Relay" e. q) R" N& c6 Q; E. F" r9 E
* 81 - Frequency Relay P6 Z; J7 [1 a: ~, [4 m0 z# x& A
* 83 - Automatic Selective Control or Transfer Relay% D9 n' Z4 i5 p) `
* 84 - Operating Mechanism" [- O* ]1 n- m/ @' M" }% a
* 85 - Carrier or Pilot-Wire Receiver Relay
, R1 {' D3 w6 M3 n1 Y, o9 t& e * 86 - Lockout Relay- ~; d3 N ?7 r& C7 F
* 87 - Differential Protective Relay( ?+ \$ J: v7 C
* 89 - Line Switch4 N$ s( D) [; M/ `- E
* 90 - Regulating Device
& T! q6 `( M- e h; `8 h8 d * 91 - Voltage Directional Relay( K# y0 P; \4 k, W8 X1 ]! z
* 92 - Voltage and Power Directional Relay
) t* r) A4 \0 k+ v) ~ * 94 - Tripping or Trip-Free Relay+ V" F {4 {4 h/ w& c' B% y+ y& S* u
* 95 - Reluctance Torque Synchrocheck
: y: |$ x$ x9 L3 g * 96 - Autoloading Relay |
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