REGULATED DC POWER SUPPLIES
78
Model PDS20-18
PDS20-36
Output
Output voltage range (V)
0 - 20
0 - 20
Output current range (A)
0 - 18
0 - 36
Rated output power (W)
360
720
Output terminal
Front & Rear
Rear
Voltage regulation characteristics
Line regulation
0.005% +1 mV (for
±
10% source voltage fluctuation)
Load regulation
0.005% +2 mV (for 0 to 100% fluctuation)
Ripple /noise, p-p (By 20MHz Scope)
30 mVp-p
Ripple /noise, rms (5 Hz to 1 MHz)
1 mVrms
1.5 mVrms
Transient response (typ.)
100
μ
sec
Temperature coefficient (typ.)
±
100 ppm/
°
C
Rise time
Full load / no load 100msec / 100msec
Fall time
Full load / no load 150msec / 1000msec
Current regulation characteristics
Line regulation
5mA
10mA
Load regulation
5mA
Ripple noise, rms (5 Hz to 1 MHz)
10mA
10mA
Temperature coefficient
±
100ppm/
°
C
Display
Voltage display, accuracy (23
±
5
°
C)
3 1/2 digits LED, 0.1% rdg
±
2 digits, 10mV accuracy
Current display, accuracy (23
±
5
°
C)
3 1/2 digits LED, 0.5% rdg
±
2 digits, 10mA accuracy
In constant voltage/ current operation
CV LED on/ CC LED on
Output signals
Alarm signal output
Open collector, active Low Operation functions
Operation function
OVP key
Displays OVP circuit operating voltage on front
KEYLOCK (LOCAL) key
Locks keys and knobs (except POWER switch).
PRESET 1 - 3 keys
Used with MEM key to memorize three output
MEM key
Used with PRESET keys to memorize three output
FAST/SLOW key
Changes output voltage and current setting speed.
ON/OFF control
Enabled with input contact signals.
POWER switch shut-down
Enabled with input contact signals.
Output voltage remote sensing
Compensates for 1 V voltage drop on single side.
Protection
Over voltage protection (OVP)
POWER switch off at setting value
Over current protection (OCP)
POWER switch off at setting value
Overheat protection (OHP)
POWER switch off at setting value
Soft OVP (OVD)
Set from external controller in remote control mode.
Environmental request
Operating temperature / humidity range
0 to 40
°
C / 30 to 80 % RH
Stocking temperature / humidity range
–
20 to 70
°
C / 20 to 80 % RH
To-GND voltage
±
250 VDC
Cooling method
Front air intake type forced air cooling with
Power source
Input voltage
AC 90 to AC 246V, 50/60 Hz without setting change.
Power factor (typ)
95%
Power consumption (typ)
560 W
1100 W
Power efficiency (typ)
65%
65%
Dimensions / Weight
Dimensions (W ¥ H ¥ D) mm
210
×
124
×
405
Maximum dimensions (W ¥ H ¥ D) mm
210
×
141
×
465.5
Weight (approx.)
6.3 kg
7.2 kg
Options
Analog I/O board
V/I controlled by external voltage or resistance.
GP-IB interface board
V/I set/read, Output ON/OFF, AC shout down.
RS-232C interfaceboard
V/I set/read, Output ON/OFF, AC shout down.
Output capacity extension
Parallel connection control : Master-slave system,
SPECIFICATIONS
