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List of Device Numbers
& ~( a% Z0 |& C7 {0 LClick to learn more...9 K9 N1 d2 ^& o9 d% C. n
3 J0 [" E x0 T9 s8 \/ X4 ~( c * 1 - Master Element' E* Z6 S7 S( C9 N/ ?
* 2 - Time Delay Starting or Closing Relay. r% v, k i9 J
* 3 - Checking or Interlocking Relay
2 N$ F( K! n! W6 g% {/ H A * 4 - Master Contactor
/ |+ }7 I6 `- ?0 d8 T2 K, M * 5 - Stopping Device0 I8 j/ P- f& G9 g2 s x ]+ C
* 6 - Starting Circuit Breaker4 m/ `' u, R8 o9 B5 P
* 7 - Anode Circuit Breaker
! m+ T+ P5 F6 V0 G2 P* | * 8 - Control Power Disconnecting Device
9 i9 P! @% z2 K0 c2 c$ A5 M+ v+ T * 9 - Reversing Device
$ `# Z& U2 m& } * 10 - Unit Sequence Switch$ ~; x2 n& {- q
* 12 - Overspeed Device
4 G% f8 p5 c, k5 q0 s * 13 - Synchronous-speed Device3 B/ S/ X& u& W; w
* 14 - Underspeed Device, i2 `! ]& ~0 c
* 15 - Speed - or Frequency-Matching Device: a8 g; O3 N1 X5 Z/ A2 @4 q
* 21 - Distance Relay4 g2 `* Z, M$ Q2 w+ G o+ S8 Y
* 23 - Temperature Control Device
6 K0 c9 b4 S+ v/ f * 25 - Synchronizing or Synchronism-Check Device8 W5 k! ]$ j) N8 y1 \+ i
* 26 - Apparatus Thermal Device5 L' B3 r' M! s' A& a* U
* 27 - Undervoltage Relay6 D3 `' V/ q; @5 z
* 29 - Isolating Contactor/ _8 e3 V- {1 Y) d- Y
* 30 - Annunciator Relay2 D5 ]" D( b/ t' H+ s. E$ i. P* H
* 32 - Directional Power Relay% n* Z! M. U" U: H1 }: I- H2 ~$ @
* 36 - Polarity or Polarizing Voltage Devices
4 ^$ a% I+ W# d# S * 37 - Undercurrent or Underpower Relay( S8 [' Q+ W" W" `7 [
* 38 - Bearing Protective Device
+ `: U% H/ S/ I. y" a& f * 39 - Mechanical Conduction Monitor R/ [; o; p. y1 A) z
* 40 - Field Relay$ z1 H% p* V4 d V! |$ H
* 41 - Field Circuit Breaker @8 x( k, q6 {8 B: }+ l" W- A) A! m
* 42 - Running Circuit Breaker
; ^" C# T) U; l4 i- d3 s* ? * 43 - Manual Transfer or Selector Device; n# Z' y8 u& W
* 46 - Reverse-phase or Phase-Balance Relay
4 u& Q. ~: Z5 p( m5 S1 z5 B3 b( \1 \: i * 47 - Phase-Sequence Voltage Relay
! ~+ v9 `+ o$ } * 48 - Incomplete-Sequence Relay
# ~6 g/ X/ \6 V( m) | * 49 - Machine or Transformer Thermal Relay
. N7 x8 M9 Z7 K" u( e# c * 50 - Instantaneous Overcurrent
+ q5 J# ` G# }0 a* i$ M1 B! a* H * 51 - AC Time Overcurrent Relay
$ @$ x9 G. x9 X& k4 J8 b; E8 o/ p" ~ * 52 - AC Circuit Breaker, z! n+ ^) f6 n9 ~' K, `+ |
* 53 - Exciter or DC Generator Relay
3 k0 @- i7 c; d+ Z * 54 - High-Speed DC Circuit Breaker
/ D* A; ~1 B$ v( s/ w. P% ] * 55 - Power Factor Relay* y; e% Q5 B }$ _1 w
* 56 - Field Application Relay/ O& s6 Q! {# k3 n4 h
* 59 - Overvoltage Relay9 K1 U5 ?; b/ L4 k& {
* 60 - Voltage or Current Balance Relay
/ a( [) s8 ?5 X m0 Q- { * 61 - Machine Split Phase Current Balance
9 c" C* U' T8 ~ * 62 - Time-Delay Stopping or Opening Relay
7 A% `" N* \. z4 t * 63 - Pressure Switch9 T. M' t) M# O' S9 P; c
* 64 - Ground Detector Relay' ]+ c2 }) ?8 [" ?3 a1 g% n
* 65 - Governor
6 d, b9 m# Z* R1 a3 p. t3 V * 66 - Starts per Hour' P) B8 y5 i, {2 C% B3 p5 F! ]- Y: E
* 67 - AC Directional Overcurrent Relay
8 X, ]/ p" X7 S. S$ T5 q * 68 - Blocking Relay; G2 k2 H- }$ v8 |2 w3 J6 r2 {
* 69 - Permissive Control Device
% E' |, S% \& ?- C * 71 - Level Switch
W, t# O: O( V8 X" j * 72 - DC Circuit Breaker
( H! l- s3 L& e, p* K' x * 74 - Alarm Relay* H* y: h. h; _% l0 P5 n
* 75 - Position Changing Mechanism
+ Y3 q. [$ b4 d% Y * 76 - DC Overcurrent Relay- C R5 o! O6 r: R: ^8 I$ m3 g I
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
( O" q9 ^$ [6 m; `2 u' Q * 79 - AC-Reclosing Relay9 l+ ?! J. W, _
* 81 - Frequency Relay6 G* _5 K" W6 v" C K3 x. Z
* 83 - Automatic Selective Control or Transfer Relay! x `2 [) R$ s+ Y, ^* }
* 84 - Operating Mechanism2 M' C" K" |( i% j$ H3 K
* 85 - Carrier or Pilot-Wire Receiver Relay6 u7 C- Q9 z' f [ J3 M$ m. h
* 86 - Lockout Relay
+ l! f1 T# ^# @; x. c* E8 M * 87 - Differential Protective Relay
0 t: j1 l2 x. C; f# h6 j- ?/ R9 { * 89 - Line Switch9 y8 P6 t# I& w, G) [
* 90 - Regulating Device6 C; e' G4 J3 p5 w5 S( O
* 91 - Voltage Directional Relay
# h4 P5 P. G& ], L4 p; o * 92 - Voltage and Power Directional Relay$ B# N* T+ ]/ p4 x% E* C
* 94 - Tripping or Trip-Free Relay* |; x# m0 b9 a. B+ P
* 95 - Reluctance Torque Synchrocheck4 g4 g) p$ |! j1 Q1 D- b9 r, |1 C
* 96 - Autoloading Relay |
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