Eaton Digitrip RMS 510 LI, Инструкция по эксплуатации

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I.L. 29-8858
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Inst. 1 L
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(S)
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Available Settings
2,2.5,3,4,
5,6,
M" M,
In Multiples of
Rating Plug
Amperes {In>
Ml
and M2 Values are Specified
on Rating
Plug
Fig. 4.5 Instantaneous Current Settings
Note: For Testing Purposes Only: When using an
external single phase current source to test low level
ground fault current settings, it is advisable to use
the Auxiliary Power Module (APM) (See Fig. 7). Espe­
cially when the single phase current is low, without
the APM it may appear as if the trip unit does not
respond until the current is well above the set value,
leading the tester to believe there is an error in the
trip unit when there is none. The reason this occurs
is that the single phase test current is not a good
simulation of the normal three phase circuit. If three
phase current had been flowing, the trip unit would
actually have performed correctly. Use the APM for
correct trip unit performance whenever single phase
tests are made.
Available Settings
�
Gnd-Fault
Setting
A,B.C.
D.
mxln
E. F, H. K
e
Specific Values
Given on
Circuit
Breaker Time-Current
Curve and
in
Table
1
Fig. 4.6 Ground Fault Current Settings
Effective May 1997
Page 9
TABLE 1
-
GROUND FAULT CURRENT SETTINGS
GROUND FAULT CURRENT SETTINGS
(AMPERES)!,
A B C D E F H K
100 25 30 35 40 50 60 75 100
200 50 60 70 80 100 120 150 200
:ii)
250 63 75 88 100 125 150 188 250
.:
�
c 300 75 90 105 120 150 180 225 300
Cii
400 100 120 140 160 200 240 300 400
UJ
0::
600 150 180 210 240 300 360 450 600
UJ
a.
630 158 189 221 252 315 378 473 630
:2:
�
800 200 240 280 320 400 480 600 800
(9
1000 250 300 350 400 500 600 750 1000
:::J
--'
1200 300 360 420 480 600 720 900 1200
a.
(9
1250 312 375 438 500 625 750 938 1200
Z
�
1600 400 480 560 640 800 960 1200 1200
2000 500 600 700 800 1000 1200 1200 1200
Cl
2400 600 720 840 960 1200 1200 1200 1200
UJ
--'
--'
2500 625 750 875 1000 1200 1200 1200 1200
�
3000/3150 750 900 1050 1200 1200 1200 1200 1200
rn
�
3200 800 960 1120 1200 1200 1200 1200 1200
4000 1000 1200 1200 1200 1200 1200 1200 1200
5000 1200 1200 1200 1200 1200 1200 1200 1200
!, Tolerances on settings are
±1 0%
of values shown.
i Refer to Type OS, type SPB or Series C R-Frame supplemental instruction
leaflets given in Section
9 for list of available rating plugs for each type circuit
breaker.
4.9 Ground Fault Time Delay Setting
As illustrated in Fig. 4.7, there are two different Ground
Fault curve shapes, i.e., fixed time (flat) or 12t response.
The shape selected depends on the type of selective
coordination chosen. The 12t response will provide a
longer time delay in the low-end of the ground fault cur­
rent range than will the flat response.
Five flat (.1, .2, .3, .4, .5 sec.) and three 12t (.1*, .3*, .5*
sec.) response time delay settings are available. The 12t
response settings are identified by the suffix asterisk (*)
that appears in the setting viewing window. The 12t
response is applicable to currents less than 0.625 times
the ampere rating of the installed rating plug
(In).
For cur-
rents greater than 0.625 x
In
the 12t response reverts to
the flat response.
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