
99
・All specifications are subject to change without notice.
Instruction Manual
HWS
HWS HD
HWS ME
HWS-P
put- CNT・PF : 100mA).
The applied voltage must be gradually increased from zero
to testing value and then gradually decreased for shut
down. When timer is used, the power supply may be dam-
aged by high impulse voltage at timer switch on and off .
Connect input and output as follows. If output is left open
during test, output voltage might appear momentarily.
This product have monolithic ceramic capacitor in second-
ary circuit to frame ground.
Some of the withstand voltage tester may generate high
voltage at the matching with monolithic ceramic capacitor
and may cause the unit damage.
So, please check the waveform of test voltage.
PC
+
−
−S
FG
〜
〜
CNT TOG
PC
+
−
−S
FG
PF
〜
CNT TOG
PC
+
−
−S
FG
PF
〜
Input − FG (chassis) (solid line)
2kVAC 1min. (20mA)
Input − Output (dotted line)
3kVAC 1min. (20mA)
Withstand Voltage Tester
Withstand Voltage Tester
Withstand Voltage Tester
Output − FG (chassis)
500VAC 1min. (300mA)
(60V model : 651VAC 1min (390mA)
)
+S
+S
+S
Output − CNT・PF
100VAC 1min. (100mA)
CNT TOG PF
AC
(L)
AC
(N)
AC
(L)
AC
(N)
AC
(L)
AC
(N)
Output Voltage External Control (PV)
(A) Control by External Voltage
Output voltage external control function is provided. Output
voltage can be varied by applying an external voltage
(1−6V) to PV terminal and COM terminal. Note if an
external voltage is not applied, there will be no output.
Please consider the following characteristics below when
operating the unit.
Connection Method
+
−
Load
Power
Supply
1−6V
COM
+S
−S
PV
Output Voltage Linearity
20%
30% 3V Model
Nominal
Output
Voltage
O
utput
PV Voltage(Nominal Input Voltage)
3-36V Model
120%
110%
1V 1.5V
5V 5.5V 6V
48V, 60V Model
Note: Only as for the model of 3V output, the output volt-
age is used from 30% to 120% at the PV voltage is from
1.5V to 6.0V
Note: Only as for the model of 5-36V output, the output
voltage is used from 20 % to 120 % at the PV voltage is
from 1V to 6.0V
Note: Only as for the model of 48V, 60V output, the out-
put voltage is used from 20% to 110% at the PV voltage
is from 1V to 5.5V.
Output Voltage Derating
110%
100%
120%
90%
83%
20%
0
3-36V Model
30%
Output (V)
Load Current
Operating
Area
Nomina
Output
Voltage
48V, 60V Model
3V Model
Note: Only as for the type of 48V, 60V output, the maxi-
mum output voltage is used up to 110% at 90% load cur-
rent.
(B) Control by External Variable Resistor
PV terminal and COM terminal usage is the same
as explained in section 「 control by external voltage 」.
But in this method voltage for control is supplied through
REF terminal. Variable resistor is connected between REF
terminal and COM terminal and the middle point of vari-
able resistor is connected to PV terminal. Please use the
output voltage within 20% - 120% of rated output voltage
value (3V model : 30% - 120% , 48V, 60V model : 20%
- 110 % ). Wires for control lines must be twisted wire or
shielded wire. In addition, maximum variable voltage when
control by external variable resistor is rated output voltage
(100%). When output voltage must be externally control to
120% of rated output voltage (110% for 48V, 60V model),
please follow the following procedure.
(1) PV terminal and REF terminal is short by using stan-
dard connector supplied.
(2) Set the power supply output voltage to maximum
value of the output voltage variable range mentioned
in specifi cation standard by adjusting V.ADJ volume
at the front panel.
(3) Remove standard connector after input is cut off .
(4) Connect external variable resistor (50kΩ) between
REF terminal and COM terminal. Then connect
middle point of external variable resistor to PV
terminal. (sensing current is 1.4mA)
+
−
Power
supply
Load
Sensing current : 1.4mA
Variable resistor
50kΩ
Connection method
+S
VR1
−S
REF
PV
COM
When output voltage is over rated value, please make sure
that maximum output power is below rated value. More-
over, when output voltage is below rated value, please
make sure that maximum output current is below rated
value.
Please consider the following characteristic during usage.
HWS
1000
P79-132.indd 99
09.10.26 10:29:26 AM
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