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List of Device Numbers& J Q# Q- ?$ S( e; w! q
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5 L" R$ f, W2 N1 ]; U b
! z! i7 j T- I8 O& ?' r$ ^, E) o * 1 - Master Element
5 V- l- Z- A: Q W. B& {+ F3 o * 2 - Time Delay Starting or Closing Relay
1 D' V0 Z0 m) i& Z5 f0 t1 J! K: K * 3 - Checking or Interlocking Relay
% O; J8 r5 g. p C( u * 4 - Master Contactor; [: ^- W% i& C
* 5 - Stopping Device
5 D1 o: O( n' K' n( ^ * 6 - Starting Circuit Breaker
5 F* D9 e3 O% ], O4 Y * 7 - Anode Circuit Breaker" h4 N1 n. P6 b
* 8 - Control Power Disconnecting Device
3 ?! L" f, q3 h * 9 - Reversing Device8 i, ]; N! @; m* F% `: p# M% k
* 10 - Unit Sequence Switch/ E& J, A' V; A. C7 L* b: ^
* 12 - Overspeed Device; w6 i" U3 F( A
* 13 - Synchronous-speed Device
) z# J# G k+ P6 r. W* I. W * 14 - Underspeed Device+ a" T/ |8 ]5 M& x6 U% o! U
* 15 - Speed - or Frequency-Matching Device
! ^8 S5 }7 Z. ~2 ^) I$ w3 i9 [ * 21 - Distance Relay5 z' a( U, A$ B8 G( }, n+ G6 p6 _
* 23 - Temperature Control Device) U& w4 f( g0 p9 E, Q$ a
* 25 - Synchronizing or Synchronism-Check Device
8 r' V0 V2 F { * 26 - Apparatus Thermal Device0 E$ t$ A& O/ P% [- f
* 27 - Undervoltage Relay
: V$ A- t/ N: I& q * 29 - Isolating Contactor: }2 N+ R" X5 V9 E$ {" d: j& V
* 30 - Annunciator Relay
# l* ?5 i5 y2 }* C# D: K6 M3 y * 32 - Directional Power Relay
3 A. [* l. o6 @/ \ * 36 - Polarity or Polarizing Voltage Devices
% @4 O; U- y& A# o) T8 `: k+ t# G( L, W * 37 - Undercurrent or Underpower Relay
9 [# Y( e4 k! q5 B * 38 - Bearing Protective Device
+ ^" G* w$ F6 h# T * 39 - Mechanical Conduction Monitor
3 E9 e: V" |9 E [7 O. m * 40 - Field Relay
' N2 ^% F1 @4 Z * 41 - Field Circuit Breaker1 I- q( j) A5 r7 e
* 42 - Running Circuit Breaker$ j( f7 M* g" [+ a, S# y F1 h: R
* 43 - Manual Transfer or Selector Device
4 m# g+ e; P0 T/ r% p# V4 ] * 46 - Reverse-phase or Phase-Balance Relay% n7 T; y1 m, O; l0 _8 g
* 47 - Phase-Sequence Voltage Relay
7 }+ I# d. i, i) | * 48 - Incomplete-Sequence Relay9 X B c; [3 S2 y
* 49 - Machine or Transformer Thermal Relay
. u! h% Z* k: a8 F8 @- o8 k1 r * 50 - Instantaneous Overcurrent5 N- o( l9 a8 c) z; |7 J5 a
* 51 - AC Time Overcurrent Relay$ Z8 h- `7 Y3 }" l* [- Q. z" ?3 I
* 52 - AC Circuit Breaker( S: D( v5 w2 R5 z
* 53 - Exciter or DC Generator Relay& q! S! v M( ]. o, a4 m0 M
* 54 - High-Speed DC Circuit Breaker! T+ A1 b+ [* f" R$ x# ~! C: O
* 55 - Power Factor Relay
" d$ U5 M" b' g * 56 - Field Application Relay7 v8 }. z" D6 j+ F; k7 I
* 59 - Overvoltage Relay
o" c# R. Z1 r2 s * 60 - Voltage or Current Balance Relay
; i% Y, @! S% G' Y! m$ q- J* }+ }8 Z * 61 - Machine Split Phase Current Balance) U: Y& C( Q6 ~4 M
* 62 - Time-Delay Stopping or Opening Relay
: z- j6 v0 S+ p2 Q' Q1 q0 C * 63 - Pressure Switch
6 J7 y8 c) m& Z& C, |9 m4 W+ g; F3 X * 64 - Ground Detector Relay7 l8 a1 f* K: S& X$ D8 R
* 65 - Governor
2 S# N: V7 j t1 l4 V * 66 - Starts per Hour
" B- h5 E. c2 d$ W |/ b. w7 T! g * 67 - AC Directional Overcurrent Relay+ g" _7 d' n0 Y. j" T4 j
* 68 - Blocking Relay/ W' a2 j) U# c/ ~; o K
* 69 - Permissive Control Device2 i* H; Q: |4 w! x! S
* 71 - Level Switch$ W6 J- U5 O# e6 \
* 72 - DC Circuit Breaker
& B8 Z( |: T9 I- Y* K9 ?3 E, Q * 74 - Alarm Relay
' a1 k( F! N% l" m+ y" @- L * 75 - Position Changing Mechanism6 q/ S8 B) s) V
* 76 - DC Overcurrent Relay
* E' l& \+ t# c * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay* v0 O2 |' ?; Y6 ^
* 79 - AC-Reclosing Relay
0 }2 u8 n1 C4 b7 W& E+ C) H5 \ * 81 - Frequency Relay
& {# D& D7 z4 v; S, n% h: w+ I * 83 - Automatic Selective Control or Transfer Relay, o4 B$ n. x$ c# {5 s8 j
* 84 - Operating Mechanism! e- V+ u! d+ a: D
* 85 - Carrier or Pilot-Wire Receiver Relay- y7 H6 w- s' {# o2 a$ \; s# ?; M
* 86 - Lockout Relay) @7 w7 i7 Q5 C$ r/ L* H4 o( w& E
* 87 - Differential Protective Relay
! {. u, u' W' r; n5 c * 89 - Line Switch9 s$ s, |& i \2 [! g. W
* 90 - Regulating Device: d: ?+ }; q- g$ r# J7 X( I
* 91 - Voltage Directional Relay' {) A6 b }9 W' s" w/ |
* 92 - Voltage and Power Directional Relay( i- V" c7 Y8 D% T
* 94 - Tripping or Trip-Free Relay( n- _+ L& E' C6 D: s0 j, ]
* 95 - Reluctance Torque Synchrocheck
2 u. Y2 K$ t0 y! g- q3 Z8 `+ x; m * 96 - Autoloading Relay |
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