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List of Device Numbers; f d R5 Q9 u% ?5 Z8 E
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* 1 - Master Element
( D4 W& q, h6 o! K9 b; D& ]$ L" M * 2 - Time Delay Starting or Closing Relay' N2 B, U- c i; a1 B, J7 M# m7 S. o
* 3 - Checking or Interlocking Relay( P, D1 D( }- T% h; d
* 4 - Master Contactor# ? X8 N3 i: c" _
* 5 - Stopping Device% D% u! J" F. v5 B4 I' _
* 6 - Starting Circuit Breaker6 W5 W2 `; K$ }
* 7 - Anode Circuit Breaker! Z! u0 s! D, g
* 8 - Control Power Disconnecting Device
3 ]/ m. ?2 ?& u2 @% ~; ` * 9 - Reversing Device) `9 [* F+ u# C0 _2 \+ S
* 10 - Unit Sequence Switch
5 ]( G8 b: Z6 u: V * 12 - Overspeed Device+ N: Y: I6 h' N1 ?7 q
* 13 - Synchronous-speed Device
2 z2 P: n& u) k' i; @ i; Q * 14 - Underspeed Device
( D9 |. a, t+ o$ M. Y* | * 15 - Speed - or Frequency-Matching Device6 b$ Z$ H2 y" T }7 C
* 21 - Distance Relay% X; H* F! R7 ? [
* 23 - Temperature Control Device
7 [& d' v- B- s6 M* q+ H, a$ P * 25 - Synchronizing or Synchronism-Check Device
3 F! m- x7 }5 V' K, S * 26 - Apparatus Thermal Device) o# S/ r% O1 f& f3 l" O% u9 [
* 27 - Undervoltage Relay! M- X q& w& A
* 29 - Isolating Contactor; v- \# w+ _/ O+ e1 C% j; M
* 30 - Annunciator Relay
# V, ~+ a: I) Q, D * 32 - Directional Power Relay
) o* ]* R/ l2 F% y( X7 b& R * 36 - Polarity or Polarizing Voltage Devices
, a% L' I9 J7 w1 N3 @$ r8 ] * 37 - Undercurrent or Underpower Relay
4 Y7 b: t7 H0 J3 ~. Y, ~6 v X' \ * 38 - Bearing Protective Device
. h( M7 V* T6 u; o7 Z+ ?# i* q * 39 - Mechanical Conduction Monitor
' q. R# w5 L \+ W * 40 - Field Relay& n8 n1 d8 u" E0 K
* 41 - Field Circuit Breaker
9 x! T! X3 r" v9 T& r * 42 - Running Circuit Breaker
! k2 |" X' S0 B3 [: u. K+ @5 \ * 43 - Manual Transfer or Selector Device
I; f" d7 c/ F * 46 - Reverse-phase or Phase-Balance Relay# r) Q4 V5 X/ Z# w6 u$ e( Z9 P4 K
* 47 - Phase-Sequence Voltage Relay
5 R) O/ s) }$ x% E+ E * 48 - Incomplete-Sequence Relay
" d2 ^5 W5 Q% m+ w+ \ * 49 - Machine or Transformer Thermal Relay& s9 O [! G* K2 }
* 50 - Instantaneous Overcurrent7 E* Z* J. u/ O0 P7 j0 z/ B
* 51 - AC Time Overcurrent Relay
4 h! o/ k, ?5 W- A" |" H! k * 52 - AC Circuit Breaker% [0 y2 L5 T# D3 b- }6 U7 R
* 53 - Exciter or DC Generator Relay
7 g2 T5 R, ]) p ~" O0 m7 S * 54 - High-Speed DC Circuit Breaker0 c3 n% O3 s9 r+ y; i' [
* 55 - Power Factor Relay
" r5 ]4 ?4 N+ N: x( B* E * 56 - Field Application Relay" ^- r9 P# l5 q/ [& w, a- h' a
* 59 - Overvoltage Relay# {( [5 C7 P& p2 g- c
* 60 - Voltage or Current Balance Relay0 q+ M- \( S+ x5 r4 W6 o2 s
* 61 - Machine Split Phase Current Balance% [ k, t' U1 s! |+ d" Q- _" T
* 62 - Time-Delay Stopping or Opening Relay
$ S& A+ F; O2 f4 m+ b* P2 l * 63 - Pressure Switch
/ M" j9 e! ^5 a ^6 b, x * 64 - Ground Detector Relay
7 |# \, B9 W- ^: f5 g * 65 - Governor
+ D" L' q5 q6 l, p1 O * 66 - Starts per Hour. ^& M& t$ n) Q5 o; T4 h
* 67 - AC Directional Overcurrent Relay
6 ~+ _" e+ f) y) U8 [! z S; { * 68 - Blocking Relay$ G- B6 O; O" R; ~1 w' b2 o
* 69 - Permissive Control Device
. f0 q" h- @9 s( C, R5 A7 y5 M * 71 - Level Switch
/ Z) ?. e r9 P/ y6 Y * 72 - DC Circuit Breaker- B7 F/ ^% I& v) M B( s
* 74 - Alarm Relay* Z" b- j; n+ k+ @
* 75 - Position Changing Mechanism, `# _, x) Q9 Z' J/ j) c
* 76 - DC Overcurrent Relay
, ]3 e; I! E& |& i * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
+ v% Y; Y6 g) W6 k' c8 x9 s * 79 - AC-Reclosing Relay8 E" q& U W& A+ X0 o* ]
* 81 - Frequency Relay
) z8 Y( a( L3 S* Y' I1 \9 w * 83 - Automatic Selective Control or Transfer Relay
L+ {: t; e% x: s. S# S" V * 84 - Operating Mechanism1 W. w; L5 w/ ~
* 85 - Carrier or Pilot-Wire Receiver Relay5 s1 @% m( H. V1 C
* 86 - Lockout Relay& m# P, _: m" A- u- n
* 87 - Differential Protective Relay
; ?0 l% i+ Q/ z * 89 - Line Switch
. K9 N, _9 w6 ~ * 90 - Regulating Device
( N" E" Q4 |7 c * 91 - Voltage Directional Relay
* Q+ |1 U$ y! ^, V& q. L * 92 - Voltage and Power Directional Relay: X" p$ ?# w, |) |2 m. c T; H
* 94 - Tripping or Trip-Free Relay
8 A0 _3 ~* o' \8 a8 x1 ] * 95 - Reluctance Torque Synchrocheck& ^3 V* q$ V. G$ N
* 96 - Autoloading Relay |
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