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List of Device Numbers
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* 1 - Master Element
- @+ L# w9 {* b# G2 S% H * 2 - Time Delay Starting or Closing Relay
, n4 K: s) |3 n5 E9 |9 O- q+ W * 3 - Checking or Interlocking Relay
0 l) L& X7 ^, V7 q x% h" } * 4 - Master Contactor
; F! R" }: Y, J4 j8 U! Y+ ^ * 5 - Stopping Device
# E0 D" n1 U* I* B* J# I8 O; l * 6 - Starting Circuit Breaker+ F. ^) {, L+ I" p( e
* 7 - Anode Circuit Breaker
, l& r- g; x6 u# @* t! U* D) R * 8 - Control Power Disconnecting Device
+ C( Q- p J& x( O7 U5 x- S, g * 9 - Reversing Device @, L* C1 w P. S9 n5 H ?8 F
* 10 - Unit Sequence Switch) \# V& ^0 c0 I9 t6 d8 _
* 12 - Overspeed Device% v; Q5 p' q7 h; i" d' Q7 ?
* 13 - Synchronous-speed Device) p* a6 ~! `* P' U( I' N
* 14 - Underspeed Device
3 l0 y. j" H% | * 15 - Speed - or Frequency-Matching Device
5 Y# S* L7 s, J! v" A * 21 - Distance Relay
! k7 D) Y4 W* }/ C0 \' Y * 23 - Temperature Control Device
6 Q) _- h& w+ }( Y% Q * 25 - Synchronizing or Synchronism-Check Device
8 Z- H' a$ A, }+ ~4 b, J6 n( C * 26 - Apparatus Thermal Device
4 k* M5 [; e4 G * 27 - Undervoltage Relay" `; G" d( e1 E3 a: n" S
* 29 - Isolating Contactor. y/ R/ g" ^8 T# d6 _% C
* 30 - Annunciator Relay
7 Q# i% K; C/ U* ~ * 32 - Directional Power Relay
- V, }8 u0 p8 d7 D- v. c7 h * 36 - Polarity or Polarizing Voltage Devices. s/ S& G' l, c v
* 37 - Undercurrent or Underpower Relay
! O; a) U1 e% L8 ^ * 38 - Bearing Protective Device
" U9 h2 I0 R6 d. q0 H$ e0 |$ q: y$ i8 ] * 39 - Mechanical Conduction Monitor: l2 U- z5 _! x% c$ F
* 40 - Field Relay
7 B0 T7 J* j/ [- H" Z * 41 - Field Circuit Breaker8 w: X' V. ?# |4 t# x& l% B
* 42 - Running Circuit Breaker
5 x0 a' Z' i* y+ W3 c( N; K * 43 - Manual Transfer or Selector Device+ t8 X( [: E7 Q- O L4 b# G$ E
* 46 - Reverse-phase or Phase-Balance Relay* [4 ]* e2 E' A" U, _
* 47 - Phase-Sequence Voltage Relay+ T' h' M1 `( W- ~" V x
* 48 - Incomplete-Sequence Relay
5 @3 D Q; X- I * 49 - Machine or Transformer Thermal Relay, W: k# N6 a3 [$ P. h' h
* 50 - Instantaneous Overcurrent
1 a v4 x1 `) M. G* }$ \ * 51 - AC Time Overcurrent Relay
. l! s3 I( s$ c2 S( q$ D) \ * 52 - AC Circuit Breaker0 h9 }/ W! \' q: U( P
* 53 - Exciter or DC Generator Relay- z( T3 s/ ]/ @; B8 T3 ]5 w$ J
* 54 - High-Speed DC Circuit Breaker) o' u. y7 T1 Y% y: a
* 55 - Power Factor Relay
3 r" [; F0 |% w: W) y- { * 56 - Field Application Relay) Z0 [/ D" p. x+ h# {# B
* 59 - Overvoltage Relay
" Y# C1 M' e3 T, b1 }3 D. U * 60 - Voltage or Current Balance Relay
: V; ]( x0 a/ l) K! R" ] * 61 - Machine Split Phase Current Balance: H1 ]& S: K/ a8 ?$ H: v' ^8 O8 t
* 62 - Time-Delay Stopping or Opening Relay
' t3 o2 Z& T- e# S4 Y * 63 - Pressure Switch: i* n8 b) a1 R2 O, ^
* 64 - Ground Detector Relay
. S7 X% p/ Q: N$ B. l* a4 t * 65 - Governor
0 {8 a- L% E# J f * 66 - Starts per Hour
8 x% I! R: r7 p: z$ K * 67 - AC Directional Overcurrent Relay
( x. `6 Z2 C2 ~) T! p$ B * 68 - Blocking Relay
' }# c' V2 E) J5 a0 h% i * 69 - Permissive Control Device
) q( L0 ?! Y3 g* y* X2 Y/ M * 71 - Level Switch8 i2 I( G H/ `+ `5 ~) q5 G* v
* 72 - DC Circuit Breaker- }5 z. o3 b9 C5 |
* 74 - Alarm Relay+ d; g2 E. ?3 q7 K
* 75 - Position Changing Mechanism8 i2 V$ R! m8 v( n
* 76 - DC Overcurrent Relay& [ W/ z# O$ O0 [
* 78 - Phase-Angle Measuring or Out-of-Step Protective Relay
3 y; N r) U( D" c" B+ u0 V * 79 - AC-Reclosing Relay6 t r# ~1 N& p
* 81 - Frequency Relay* s5 |# W* W5 L' X' s9 i3 Y0 c
* 83 - Automatic Selective Control or Transfer Relay6 j3 Z2 |8 `1 H
* 84 - Operating Mechanism- N0 H! Z7 n6 d) Z" x. w
* 85 - Carrier or Pilot-Wire Receiver Relay
8 P3 j+ Q( _8 K5 b- Q' T * 86 - Lockout Relay
: i: k. A% R6 t% u! Z * 87 - Differential Protective Relay1 [" r% { r+ L, N9 D
* 89 - Line Switch
- A; W% H0 V( n; e. E% H6 p7 c5 N3 v * 90 - Regulating Device4 a# F% M( C! M2 M2 m \
* 91 - Voltage Directional Relay6 x/ Z; |. m* S
* 92 - Voltage and Power Directional Relay
& X" L4 R) `% d+ w& }8 J; B * 94 - Tripping or Trip-Free Relay1 i: S B6 o5 I# {* M R8 `
* 95 - Reluctance Torque Synchrocheck
6 x0 B, \2 Z0 l' c' l9 e * 96 - Autoloading Relay |
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