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List of Device Numbers
2 ^1 } Q$ z1 Q! n! WClick to learn more...
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* 1 - Master Element
8 k5 I+ e& S2 T5 v1 u/ j) Y * 2 - Time Delay Starting or Closing Relay6 }( t! p1 H1 e1 s2 g
* 3 - Checking or Interlocking Relay
, M. R/ h0 R w# Z * 4 - Master Contactor
* G' g( B$ g& k * 5 - Stopping Device
( D7 `- G9 o8 y) W* M* C6 j% F1 g * 6 - Starting Circuit Breaker9 S6 N) v3 }% Y* z; E! S- C
* 7 - Anode Circuit Breaker5 P7 U3 @% Y3 F. p8 T. M A& K; X D
* 8 - Control Power Disconnecting Device
. _" U0 e6 c9 I3 |1 x * 9 - Reversing Device
l1 [' w0 k' i- P4 O * 10 - Unit Sequence Switch
# o z9 D/ u3 X0 u) x6 K2 W * 12 - Overspeed Device Z- g w( {' w3 R8 @! k5 b' P
* 13 - Synchronous-speed Device/ b2 Z& F. W- _, w) B; W
* 14 - Underspeed Device4 R0 ?, X* h7 N$ a8 u5 V
* 15 - Speed - or Frequency-Matching Device
* m1 K r. _1 \7 u3 P6 i6 q * 21 - Distance Relay' f/ A! z( [3 [$ U6 r
* 23 - Temperature Control Device
' g# e" R: `7 @, a * 25 - Synchronizing or Synchronism-Check Device
$ `' J3 }2 H% n* J, ` * 26 - Apparatus Thermal Device
+ u ]1 a$ w% q9 S K4 `: w4 S * 27 - Undervoltage Relay* L; c# O) i% D1 C
* 29 - Isolating Contactor
, \& |( M2 p4 _& X * 30 - Annunciator Relay) i4 D! L+ r5 S- x# a
* 32 - Directional Power Relay3 z: v% ^7 q( w: L9 Y5 o) b
* 36 - Polarity or Polarizing Voltage Devices3 B' t* N: V" x2 l- @0 R! O
* 37 - Undercurrent or Underpower Relay
1 f& F7 m7 V) P) t( a0 { * 38 - Bearing Protective Device
# `0 m" j7 {# }6 f6 I/ R q( p * 39 - Mechanical Conduction Monitor+ J4 J: M3 c$ n
* 40 - Field Relay
* N8 }: ?" o7 L" U: m3 H! ~! R1 ~& [ * 41 - Field Circuit Breaker
7 Q" E/ n3 a. }: W3 [* q. ~ * 42 - Running Circuit Breaker( c% e) n) x. o% }- c. X
* 43 - Manual Transfer or Selector Device- m [; }! l9 p, K' Q9 T$ C
* 46 - Reverse-phase or Phase-Balance Relay7 X. q" ^) M) |- b3 ?
* 47 - Phase-Sequence Voltage Relay
# s, T% Z+ }1 K+ s: m* \3 Y * 48 - Incomplete-Sequence Relay- T/ S, G3 ]1 F
* 49 - Machine or Transformer Thermal Relay7 n$ ]# o. R3 {5 b8 S
* 50 - Instantaneous Overcurrent
1 K" x$ h6 v! O- Z+ W * 51 - AC Time Overcurrent Relay) y$ ~, t* {. B- T8 d' _
* 52 - AC Circuit Breaker. ]7 Z9 J2 P+ v
* 53 - Exciter or DC Generator Relay* g5 I( _2 E: R; [3 ^
* 54 - High-Speed DC Circuit Breaker/ d5 L# q' K# b# `
* 55 - Power Factor Relay
( c& m$ \7 Q5 R, \! k! i& [2 G& h * 56 - Field Application Relay
: s" |- o1 k" Q8 t; T) k r+ s * 59 - Overvoltage Relay! Y* U" q: |9 c9 A
* 60 - Voltage or Current Balance Relay: g8 r, I* z3 f2 S0 U
* 61 - Machine Split Phase Current Balance
9 s H5 Z. H: Z/ q; [8 m! z1 c: n- v * 62 - Time-Delay Stopping or Opening Relay
8 J. s( i0 z7 d( G% L6 r * 63 - Pressure Switch& J+ m2 k' D, x8 H4 R; d0 [0 X
* 64 - Ground Detector Relay7 u6 C: s6 X) _( I& o4 ]
* 65 - Governor
/ l7 g, x0 C* ]/ [( e8 S/ t+ O * 66 - Starts per Hour. T9 c/ l# b) t
* 67 - AC Directional Overcurrent Relay7 j, c4 K2 ?0 s O0 |! |/ b9 g
* 68 - Blocking Relay
9 ]9 G0 E q4 x! y * 69 - Permissive Control Device
* _! T! P, N8 l * 71 - Level Switch
2 `' s( [2 Z7 I+ z% _# c * 72 - DC Circuit Breaker/ `6 V$ v5 J; P6 h: j: D3 E
* 74 - Alarm Relay
+ s4 ]3 E+ B, g3 A& C* G0 a& [ * 75 - Position Changing Mechanism
4 j; k* ^# q' n0 ` * 76 - DC Overcurrent Relay, y0 f- r% ?7 P. B
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay) h- S- B& _, c3 }
* 79 - AC-Reclosing Relay" e- q3 ]1 n9 j/ J& Q1 ]( P
* 81 - Frequency Relay
" s/ s% V3 M! ]2 {: {8 y * 83 - Automatic Selective Control or Transfer Relay# b4 g6 d5 S! k
* 84 - Operating Mechanism
$ V* M {5 ^# ^9 S7 _ * 85 - Carrier or Pilot-Wire Receiver Relay
& L0 ^, W% R8 W4 ]- A& w& `6 m * 86 - Lockout Relay
' ^2 a3 D O2 r i" F4 { * 87 - Differential Protective Relay
& E/ h8 `, F, K. Z; t; Z* ` * 89 - Line Switch
9 K( h& k- d, I0 H * 90 - Regulating Device
6 h& m+ I- F& @* M7 Q$ F/ I * 91 - Voltage Directional Relay- D) I% e3 G; B2 w& h9 I" V6 |
* 92 - Voltage and Power Directional Relay# U/ `1 p. t! }; k9 e. @
* 94 - Tripping or Trip-Free Relay! F+ s! s {* b9 j" Y+ n$ _7 F
* 95 - Reluctance Torque Synchrocheck. l1 [6 i5 k) g6 h0 ^5 w, T! R* u
* 96 - Autoloading Relay |
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