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List of Device Numbers5 B# X) E" I% `# ^; c5 e
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$ |* ~# B4 R. p/ c: u# O4 b * 1 - Master Element
) J8 ?# Y0 s& L% ?; [ * 2 - Time Delay Starting or Closing Relay
8 A6 Z) T' g; @ C( |0 m * 3 - Checking or Interlocking Relay
t9 R% @) ~4 [ * 4 - Master Contactor9 i* \! t8 c5 i6 Q7 J: I" Q
* 5 - Stopping Device
/ m0 r& C7 ?# R5 `2 y" U. ? * 6 - Starting Circuit Breaker
5 [4 L7 r- D# S( g' ^" J * 7 - Anode Circuit Breaker! j) Q% S: }" |* C5 Z2 D2 o! u
* 8 - Control Power Disconnecting Device# Z. G: W* |3 d) b) p
* 9 - Reversing Device# W1 D8 {4 s h9 F1 _/ q) R6 ]
* 10 - Unit Sequence Switch
3 d! `) h' o( X4 O# j8 ^* i( \ * 12 - Overspeed Device
; N' Q& j9 n0 P6 t5 N# }# Z, E* E * 13 - Synchronous-speed Device
# y U! ?1 Z2 F& y6 |( T * 14 - Underspeed Device9 V: ^, ~1 L# y: m" B' E, g
* 15 - Speed - or Frequency-Matching Device
" J4 e j$ G, q * 21 - Distance Relay1 G5 G! z5 [% B- j1 y
* 23 - Temperature Control Device
6 J1 b* r" C& M, h$ C. Y * 25 - Synchronizing or Synchronism-Check Device
% t% r5 \# u' X * 26 - Apparatus Thermal Device
s/ W: {: U* W * 27 - Undervoltage Relay% [' K/ d8 s2 w' U1 J
* 29 - Isolating Contactor
{8 e/ S z+ X' m0 c: b7 d4 _. m * 30 - Annunciator Relay3 W- T) i' S# l% B
* 32 - Directional Power Relay
- Y! R- M+ W3 s) G/ \5 S * 36 - Polarity or Polarizing Voltage Devices! x& y9 S6 S0 K: C
* 37 - Undercurrent or Underpower Relay
* t* i5 z# Z. F- g/ [ * 38 - Bearing Protective Device% v* F- Q' C, y6 @* s1 S) q
* 39 - Mechanical Conduction Monitor/ |6 L" t8 H- u$ B7 s
* 40 - Field Relay
" m% i' I& u6 v7 X( h h * 41 - Field Circuit Breaker
$ w; j/ P# ]3 g2 P _ }2 Q$ _ * 42 - Running Circuit Breaker3 T( G" X& I4 g6 w9 `" t
* 43 - Manual Transfer or Selector Device
/ r& F& {& d5 a' F% E8 T Q * 46 - Reverse-phase or Phase-Balance Relay ^/ _2 w! g4 ], y9 C
* 47 - Phase-Sequence Voltage Relay- X% J2 u5 M' D p2 ]& U( [
* 48 - Incomplete-Sequence Relay9 p# P }) H% D
* 49 - Machine or Transformer Thermal Relay0 N+ y% x! W( q' V) l
* 50 - Instantaneous Overcurrent
$ M1 e) O' [% m+ q8 c# S; B * 51 - AC Time Overcurrent Relay8 W0 p4 A \) _+ d J! J
* 52 - AC Circuit Breaker
$ F* W& e$ g' U6 l9 ~ * 53 - Exciter or DC Generator Relay0 @5 X+ L) C" o& Z& W; @' \
* 54 - High-Speed DC Circuit Breaker u! ]+ o$ W3 [% m# }7 m4 l: b9 Q9 v$ @
* 55 - Power Factor Relay7 ~3 v8 |0 K: h- q. g) F1 o
* 56 - Field Application Relay
) T/ R' O% ^/ g, H; @ * 59 - Overvoltage Relay/ ~, F$ e; X/ f2 b
* 60 - Voltage or Current Balance Relay5 d6 [4 k/ |( E5 {# G
* 61 - Machine Split Phase Current Balance
# d+ E2 o) o" }: x% M; h) s8 E * 62 - Time-Delay Stopping or Opening Relay
3 P+ B& e: a v * 63 - Pressure Switch6 G2 Y* p! U7 ^( G+ v
* 64 - Ground Detector Relay
; j- E0 O( @' I5 _ * 65 - Governor
, L9 k, f! D% X2 P e3 G& j6 F8 ` * 66 - Starts per Hour/ i: ~ F1 ]! U+ ~3 }
* 67 - AC Directional Overcurrent Relay! D+ M# M: A: r3 ?' {7 D7 F0 Q
* 68 - Blocking Relay, s4 O5 d! b0 E4 I/ I" q0 F4 ?
* 69 - Permissive Control Device7 m) j, B: C+ n4 L2 A; R
* 71 - Level Switch
8 `9 l5 }; I4 m! x3 k * 72 - DC Circuit Breaker" N d2 E0 W/ K O6 q
* 74 - Alarm Relay) o, `+ O6 R+ I4 ?8 ^( `1 s" ^, a
* 75 - Position Changing Mechanism" `. h) y& C- _5 N z
* 76 - DC Overcurrent Relay
& I: D, h( }& H2 t * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay8 j! P* m9 y5 h: @# m0 F
* 79 - AC-Reclosing Relay. x9 y" n) I1 Y* T1 o$ E0 a8 ~
* 81 - Frequency Relay! `: T5 k! V x# R
* 83 - Automatic Selective Control or Transfer Relay
) l, _4 `; H- e" v9 R/ [6 G * 84 - Operating Mechanism
& k% _- t5 E, V1 c. `) F * 85 - Carrier or Pilot-Wire Receiver Relay
" n A" `8 O8 e1 F6 d * 86 - Lockout Relay. d; U* v8 a$ c1 X
* 87 - Differential Protective Relay
$ T: W- t0 Q! `# o$ k * 89 - Line Switch
" i* h8 e/ |1 j3 J * 90 - Regulating Device9 U! k. Z( l% n p" {( L# y& y
* 91 - Voltage Directional Relay
7 \8 ?5 O1 p+ d- R * 92 - Voltage and Power Directional Relay* X$ w2 y( Z7 M
* 94 - Tripping or Trip-Free Relay
% c4 O" Y, a0 h/ z * 95 - Reluctance Torque Synchrocheck( {0 h, Y* j3 k$ W" A0 p
* 96 - Autoloading Relay |
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