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List of Device Numbers
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# S# |& g7 S; D * 1 - Master Element
' K9 m# ~ ~" W j * 2 - Time Delay Starting or Closing Relay/ W4 a$ ~& `0 f/ f$ n4 J
* 3 - Checking or Interlocking Relay/ A, q O: `) H6 i+ q5 `4 V
* 4 - Master Contactor
2 G4 b3 A" f% M * 5 - Stopping Device
$ J( }9 W+ a$ ~ * 6 - Starting Circuit Breaker6 O! U) z5 t2 y" L4 n
* 7 - Anode Circuit Breaker; y% a1 h" U: Z
* 8 - Control Power Disconnecting Device
$ j, Z4 E" |) j( K1 }3 r) Y# S * 9 - Reversing Device* o3 D5 c% F+ g6 N K$ s. I$ _
* 10 - Unit Sequence Switch$ v5 m9 R* S: f: h7 F5 V
* 12 - Overspeed Device9 R7 X+ I4 |2 A) |
* 13 - Synchronous-speed Device
9 J3 b3 O9 O" h8 |/ i' {2 f) F# C * 14 - Underspeed Device3 _7 B3 {8 t+ E- n
* 15 - Speed - or Frequency-Matching Device$ x L, ?* z2 M0 k
* 21 - Distance Relay" Y6 N' S B! @8 h, q3 C2 w
* 23 - Temperature Control Device! Q0 W1 w% ^4 a& p8 e. d
* 25 - Synchronizing or Synchronism-Check Device
8 P' a6 q! k7 ] * 26 - Apparatus Thermal Device
. Z8 ^- ^' ]- |7 C3 C6 Q * 27 - Undervoltage Relay
$ X, t s1 {2 U% t * 29 - Isolating Contactor
/ O. }+ y, @! @' r * 30 - Annunciator Relay
1 G/ `3 L; r' l" t" p* ? * 32 - Directional Power Relay8 ~9 }! T: f4 Y4 I! K1 p* A3 Y. d
* 36 - Polarity or Polarizing Voltage Devices2 c& h- Q+ I3 a
* 37 - Undercurrent or Underpower Relay2 V6 @- F3 W) q+ O3 ^* O, {
* 38 - Bearing Protective Device& |4 `+ h* g6 ]' Y/ e4 _
* 39 - Mechanical Conduction Monitor6 u" n: [% p+ J+ C$ R1 h( a
* 40 - Field Relay" u( l- F: j0 B" B
* 41 - Field Circuit Breaker
& o; G! J5 v2 N" {* U+ \7 d- h * 42 - Running Circuit Breaker
: K3 } ]$ D0 M" g$ u! ]0 f2 b! R! w * 43 - Manual Transfer or Selector Device9 f; W$ T, p2 a7 g' s; f
* 46 - Reverse-phase or Phase-Balance Relay9 V2 |) ] A1 f/ y6 n
* 47 - Phase-Sequence Voltage Relay
" Y3 R& _0 T4 z6 V9 m2 b * 48 - Incomplete-Sequence Relay3 _- p4 o9 o. W; e' G
* 49 - Machine or Transformer Thermal Relay
, D. Q9 ~: C+ ~- P A2 ] * 50 - Instantaneous Overcurrent, L4 E; q0 H( H `. G4 b
* 51 - AC Time Overcurrent Relay
; r8 h0 O: T9 | * 52 - AC Circuit Breaker
" _' A1 J* ` x! S3 M * 53 - Exciter or DC Generator Relay1 s+ U2 A- K$ ~: b; Y
* 54 - High-Speed DC Circuit Breaker
# V: _9 { H2 Z$ e+ ^ * 55 - Power Factor Relay
( j1 S& ]! @- c# h3 I( M * 56 - Field Application Relay! h+ x; a- e! Z7 J4 r" u; e0 b. Z
* 59 - Overvoltage Relay
# l0 | B) R$ c3 l& D$ _ * 60 - Voltage or Current Balance Relay
0 x! j- J! }5 `' h2 m- q * 61 - Machine Split Phase Current Balance
5 G' O* P* F3 b, L * 62 - Time-Delay Stopping or Opening Relay( ]& ~. h) p# V
* 63 - Pressure Switch' \* ?6 E5 Z8 M+ S: M; ?% [ f
* 64 - Ground Detector Relay
+ q& j2 h! T# b( K5 Q * 65 - Governor3 k$ o" j5 b7 ~4 T' a
* 66 - Starts per Hour
+ k1 k( N# a) U$ d* I * 67 - AC Directional Overcurrent Relay
5 I1 S. g" Q$ t; y* e * 68 - Blocking Relay
) B5 {9 s+ L+ A, w, a+ F* l * 69 - Permissive Control Device
, s: t- D2 N! |/ z * 71 - Level Switch" e- j) T7 Z9 q: u9 T, n
* 72 - DC Circuit Breaker
0 ?" [3 u, A+ h* |0 b- W& m6 f3 }8 R * 74 - Alarm Relay
( |: [: t% n: J. p * 75 - Position Changing Mechanism
' d& ~* k% G+ n! u, x+ R4 c. v; i( _ * 76 - DC Overcurrent Relay
( G! ^$ f% c* y, \5 [. u: G& [ * 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
) i: H3 D) ]7 m * 79 - AC-Reclosing Relay% |) H0 u! ^9 y( X7 b% ^
* 81 - Frequency Relay2 h6 Z9 Q R* r; l' v0 _# J
* 83 - Automatic Selective Control or Transfer Relay
, t/ Z {- k& J& b: a, Y: n * 84 - Operating Mechanism
1 c) J' a7 q, G * 85 - Carrier or Pilot-Wire Receiver Relay
& y8 ~: ~) U0 j- \: t * 86 - Lockout Relay
& {. W: N e3 |' k+ e2 Y. A, t$ a$ M * 87 - Differential Protective Relay
1 P' z9 q( u# L* l. w2 D * 89 - Line Switch
8 \, v: M/ F+ o# y1 f( x * 90 - Regulating Device
4 p8 f% N; b( r' e8 ^" U * 91 - Voltage Directional Relay% k; g2 Y, Z% ]9 ?+ u4 n! I
* 92 - Voltage and Power Directional Relay
6 P% t* X+ U7 x$ `) {6 `0 l# U4 L# e * 94 - Tripping or Trip-Free Relay) f! G6 T; @( s( d5 B g' A
* 95 - Reluctance Torque Synchrocheck
x+ P; Y+ m; G. }3 O * 96 - Autoloading Relay |
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