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21
ENGLISH
Table 21-1
Generator
protection use
Special purpose
use
Load current
LED indication
General use
Usage
WB
WB1
WB2
WB3
ETR type
Iu
Uninterrupted
current
WS
WS1
WS2
WS3
WM
WM1
WM2
WM3
I
L
LTD pick-up
current
Ir
Rated current
Base current
of LED indication
Note: When the “OVER” of WS type and the “100%” of LED are lighting, the
current value is over LTD pick-up current.
The breaker carries out trip operation after specified time.
OVER
100
80
60
%Iu
OVER
100
80
60
%Ir
100
80
60
40
%I
L
< Load current LED >
The current value which is used as the reference of the load
current indication LED, varies depending on the ETR types
and characteristics setting.
< Power supply >
Power supply is required for the trip indicator (LED, alarm contact output), the measurement extension module, the display
(LCD), etc. Over-current tripping, function when there is no control power supply, it operates with the energy of internal CT.
Table 21-2 Ratings of the power supply and output contacts
Type code
P1
P2
P3
P4
P5
Rated voltage
Alarm output contacts
-
-
6-contacts
6-contacts
6-contacts (SSR)
Voltage (V)
AC
DC
240
120
125
30
Resistive load cos
f
=1.0
1A
1A
0.1A
1A
Inductive load cos
f
=0.4 L/R=0.7
0.5A
1A
0.05A
1A
Voltage (V)
AC
DC
240
120
240
30
Peak current
0.3A
0.3A
0.3A
0.3A
Current
0.1A
0.1A
0.1A
0.1A
max. ON resistance
5
Ω
5
Ω
5
Ω
5
Ω
100-240V AC·DC
24-60V DC
100-240V AC
100-125V DC
24-60V DC
100-240V DC
1
LTD
Self-holding
2
STD/INST
Self-holding
3
G1/E1/AP
Refer to
under table
4
PAL
Automatic
reset
5
TAL
Automatic
reset
6
ERR.
Automatic
reset
G1
Self-holding
Automatic
reset
E1
Self-holding
Automatic
reset
AP
−
Automatic
reset
ETR dial set
TRIP side
ALARM side
Self-holding :
The output is maintained until it
resets.
Automatic reset :
The output will be reset if it back
to normal condition.
Table 21-5 Resetting of the output contact
Criterion for power requirement
15VA
10VA
15VA
10VA
15VA
Table 21-3 Alarm contact capacity (Type code P3 and P4)
Table 21-4 Current capacity (Type code P5)
In case of power type P3 or P4, the alarm contact output relay is high sensitive relay. Therefore may occur a chattering noise
(approximately 1 ms) by ON/OFF operation of the breaker. Please adopt a time constant filter of several ms, or sampling
double reading, or the like.
CAUTION
OFF
Current
Blink
Lighting
Current
1/2 T
L
ON
Ip
PAL LED
PAL OUT
(contact output)
time (t)
< Pre-alarm function >
When the current exceeds pre-alarm current setting (lp), the
PAL LED will blink. When the LTD time (1/2 of T
L
) is passed,
the PAL LED will light and output the contact.
Summary of Contents for AE-SW Series
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