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List of Device Numbers
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* 1 - Master Element! j' x+ \+ U6 G( D* V
* 2 - Time Delay Starting or Closing Relay% b( z" q1 ?+ y/ H6 h# V } D
* 3 - Checking or Interlocking Relay
. b& d" Y1 T$ z5 L8 }/ v# } * 4 - Master Contactor
% P6 h/ o, y3 E2 C. K * 5 - Stopping Device
) `% F0 f8 U6 M$ {3 P3 h4 ?' k * 6 - Starting Circuit Breaker, r/ L. V( X- E" X, V- j2 [
* 7 - Anode Circuit Breaker
3 W/ L ?2 [+ P. I( S4 S5 F: ^4 [ * 8 - Control Power Disconnecting Device0 c/ j& H+ C' z" ]3 u2 Y
* 9 - Reversing Device
0 u" V5 W4 l+ v) k7 v9 S * 10 - Unit Sequence Switch
# G( k. M ]- U2 f * 12 - Overspeed Device
$ x. g8 C- }4 O * 13 - Synchronous-speed Device* E: u( [( \8 f- u# C
* 14 - Underspeed Device
d( p, N4 i# { * 15 - Speed - or Frequency-Matching Device/ P2 o' j9 _9 v! ^2 @: x
* 21 - Distance Relay/ h5 c+ {; N' I! D4 [# |+ V
* 23 - Temperature Control Device0 v4 }- H5 g2 e1 y7 h
* 25 - Synchronizing or Synchronism-Check Device
& \2 U, a( l; o' q, y9 H* a * 26 - Apparatus Thermal Device0 j8 j( c5 L7 P7 o' Q1 ^. q0 {
* 27 - Undervoltage Relay9 O' Y ]- p. j- g7 i G8 ?
* 29 - Isolating Contactor
" Q0 [( P1 @- t9 y/ m; p * 30 - Annunciator Relay# w$ Y- L' O7 k
* 32 - Directional Power Relay2 I% K( P# W7 Y. g+ H/ p
* 36 - Polarity or Polarizing Voltage Devices
# ?* z5 L5 E+ H/ q& h; q * 37 - Undercurrent or Underpower Relay
: B. ~2 t5 m6 D3 \' S * 38 - Bearing Protective Device+ }$ B7 [1 V8 N2 r( h2 ~; b
* 39 - Mechanical Conduction Monitor" `$ [: G3 H- W4 L2 v
* 40 - Field Relay
2 E7 E$ _* w+ a. B1 ]+ W * 41 - Field Circuit Breaker q( d- E5 n$ {. `
* 42 - Running Circuit Breaker. g% E* E8 o1 n+ Z
* 43 - Manual Transfer or Selector Device2 a1 N- h7 z, ?9 a# Q! u
* 46 - Reverse-phase or Phase-Balance Relay
) }$ S9 a# Q: K- ? * 47 - Phase-Sequence Voltage Relay
9 J' s. R1 J1 b5 o4 E% o * 48 - Incomplete-Sequence Relay, l+ W" T L7 K/ ~; o% i
* 49 - Machine or Transformer Thermal Relay* R& H! l( I' S2 ~5 F6 H+ n
* 50 - Instantaneous Overcurrent
6 m2 Z, M( O, h/ V3 Y5 [5 z7 {' i * 51 - AC Time Overcurrent Relay- V P5 o; Y( B2 Q
* 52 - AC Circuit Breaker; ?( `+ `& H% y! P: I4 r- h, `
* 53 - Exciter or DC Generator Relay! f) i/ X8 o9 u7 C/ Y, J
* 54 - High-Speed DC Circuit Breaker
! `) o0 X2 E6 d6 i3 ` _ * 55 - Power Factor Relay. v# ~2 ?. @7 R) `
* 56 - Field Application Relay
3 K7 Y, i+ P0 \9 Y$ X/ \* ` * 59 - Overvoltage Relay
4 t- S* t# T* D$ ]( p' i8 m * 60 - Voltage or Current Balance Relay4 q/ U9 m; O- X& |7 _- {. ]
* 61 - Machine Split Phase Current Balance- k$ B4 R& v9 T7 a! T
* 62 - Time-Delay Stopping or Opening Relay" i+ o7 w! ]6 f- z2 |. R
* 63 - Pressure Switch
0 }0 z9 N3 t. i0 E: T9 s. x * 64 - Ground Detector Relay
2 W" u' b( u$ b * 65 - Governor
% O) z( n5 T# b) X0 A! D * 66 - Starts per Hour
! S2 }8 A- w, d" D9 u0 i * 67 - AC Directional Overcurrent Relay
; u: z& c+ K8 g& Z1 C * 68 - Blocking Relay: p; i Y, [* D# N4 B$ p! l" V6 S8 l
* 69 - Permissive Control Device
! Q& x' Q$ A7 s. o2 W# V * 71 - Level Switch$ H, T! q- U+ {9 @' q
* 72 - DC Circuit Breaker
9 _0 i1 m2 p; R4 x * 74 - Alarm Relay- F* D8 U" d$ m! @
* 75 - Position Changing Mechanism
& u1 Q( J m U" M) b* m1 D * 76 - DC Overcurrent Relay
: { j! x3 x5 z( m: X! _7 F * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
2 J8 }6 ~0 f& M d% Z4 l * 79 - AC-Reclosing Relay
; g: Y' [- f8 m) F4 W * 81 - Frequency Relay- y7 Z* g1 {0 u/ Y; f$ `; N4 m7 d
* 83 - Automatic Selective Control or Transfer Relay& N% A; r. a# f Q& M4 t1 f6 q- K1 h
* 84 - Operating Mechanism
/ m) J# z# h. S3 I6 i# r) ]9 } * 85 - Carrier or Pilot-Wire Receiver Relay5 x% H8 g- V( N0 m) I8 k
* 86 - Lockout Relay
. \/ a) N p# w) C' Y ^ * 87 - Differential Protective Relay. v* W% T* E, A& {% _% d' R
* 89 - Line Switch' ~# }2 V& |6 W$ r6 X% l0 _. I
* 90 - Regulating Device
. T' e4 n6 I% o( ], ~. g6 ~; v * 91 - Voltage Directional Relay
n0 H! a q0 T5 J * 92 - Voltage and Power Directional Relay3 \8 _" j! e! N% p& I6 e# R$ }
* 94 - Tripping or Trip-Free Relay! |7 C6 X) Q' v0 n! E2 n9 n
* 95 - Reluctance Torque Synchrocheck' ]4 ]9 A) c0 t/ h4 R( D
* 96 - Autoloading Relay |
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