TYP ES CA- 1 6 AND CA-26 R EL AYS
' 2 '
.I..UX.. CUU&NT
!�y TRANSF.
l iT
t
}···
} ...
}··
DE.VIC.E
NuM.eER CH,�r>..!ll:i
a1 ·
P£Rc.EN,......,.,
o��F&REN'fl,lt.,.'- Rt�Jo.Y� TYPI c"'--t'
IC5
•
INDIC�t.TI""-
Co
. HT�c.T
0 P
•
OF"EAATI�G.
R - RE�TR,t.,INT C.:ou..
IN
(i!oTTCIM
R:,!-1,
EL.EMENT)
TYPI
5 • I\IISTR ... It-�T Co11...
-e:tO
(To ..
L H.
iL.&M!.NT)
T -
jq:ST"'-l t-JT COli..
(� I<.H ELI.Mit.�T)
BG - ,l,.ull.t\J.AR'f' TIII.!PPINCio REL.a...'t� TYPiii W L.
t U-JE WHIEA:i INTI.A:NJ.L. F"ULT CU!tREt-�T C"'-N
E:xU:EO TwtCl TI-l! MAXI MUM TOTAL
LlllfRENT
FLOWtNC..
THCOUGH THE 01 FFER.ENT/AL ZoNE Fote AN EXTEIOJAL FAuLT
SET P1ctaJP EquPL. To MAxi �uM T"on'tL CuUE.NT
!HKOIIG':I
_
_TH£. DI FF£R..E.NTII'IL... ZOAJ�-
6o6B269
* Fig. 10.
External Schematic of the Type CA-26 Relay for Transformer Protection and Bus Protection
or to the terminal studs furnished with the relay fo r
thick p anel mounting. The terminal studs may b e
easily removed or inserted by locking two nuts o n the
stud and then turning the proper nut with a wrench.
For detailed FT case information, refer to L L . 4 1-
076.
A D J U S T M E N T S A N D M Al N T E N A N C E
The proper adjustments to insure correct operation
of this relay have been made at the factory. Upon
receipt of the relay, no customer adjustments other
than those covered under "SETTINGS " should be
required.
A c ce pt a n c e C h ec k
The following check i s recommended to insure
that the relay is in proper working order.
A.
M i n i 111 um T r i p
C
urr
e n t
Apply current to terminals 12 and 13 of the relay.
The relay should operate as follows:
1. CA- 16
0. 15 amperes ± 5%
2. CA-26
1. 25 amperes ± 5%
B . P e r c e n ta g e D ifferen t i a l C h a r a c te r i st i c
Apply 19 amperes to terminals 1 2 and 13 o f the
CA- 16 relay or 38 amperes to terminals 12 and 13 of
the CA- 26 relay. The contacts should open when the
following re straint current is applied to the relay
with connections of Fig. 1 1.
CA- 1 6
16. 5
±
5 % amperes
CA- 26
14. 5
±
5% amperes
Check e ach individual restraint winding by apply
ing 20 amperes to each winding. Apply suffic ient
operating current to the operating circuit until th e
contacts just close. The operating current should be:
CA- 16
1. 0
±
5% amp eres
CA- 26
3 . 5
±
5% amp eres
7
www
. ElectricalPartManuals
. com
