22
UNIT SPECIFICATIONS
Description
Specifications
Models
Without fuse : UF1-2
With fuse
: UF1-2
F , UF1-4
F
Main
circuit
Phase
Single phase
Rated input voltage
100/110/120V , 200/220/254V , 380/400/440/460/480V
Fluctuation range of
power supply
±10%
Rated frequency
50/60Hz (automatic judgment system of frequency)
Rated current
(at ambient
temperature of 50°C )
25A, 35A, 50A, 75A, 100A, 150A, 250A, 350A, 450A
(600A, 800A, 1200A Semi-standard)
Control
circuit
Control power supply
AC200/220V Single-phase 25VA (50VA for 100A unit or larger)
Performance
assurance voltage
AC180V~AC242V
Operation
assurance voltage
AC160V~AC242V
Power supply for fan
Common use with the control power supply (100A unit or larger)
Control system
Phase control
Cycle control (Intermittent type/Continuous type)
Feedback control is not available for continuous type.
Adjusting range of output voltage Phase control 0%~98% (Effective value)
Cycle control 0%~98% (Effective value) (at number of cycles of 100%)
Setting range of grade
0%~100% (with reference to output)
Setting range of lower point
0%~100% (with reference to output)
Input and output properties
Linear properties ±3% F.S. (at 10~90% output)
But, in the case of cycle control of continuous type is linear properties ±5% F.S.
Ambient temperature
-10°C~50°C (at humidity of 90%RH or below)
Storage temperature
-20°C~70°C
Applicable load
Phase control : resistive load, inductive load, transformer primary side control
Cycle control : resistive load, transformer primary side control (optional)
Control signal
Current signal : DC4mA~DC20mA (with internal resistor of 250
)
Voltage signal : DC1V~DC5V, DC0V~DC5V (with internal resistor of 10k
)
Start/Stop system
Soft start/down system 0.5sec (standard)
(Setting between 0.0 sec and 300 seconds is possible from the display panel.)
Cooling system
Self-cooling for 75A unit or smaller
Air-cooling for 100A unit or larger
Warning
output
function
Major failure relay
Operates in the event of overcurrent, abnormal temperature, fuse discon-
nection, Thyristor open/short, and load short.
Contact output
: 1a contact (AC250V 1A)
Warning indication : The light-emitting diode of OCR, TMP, or F lights up,
and the same of THY or LOD flickers.
Minor failure relay
Operates in the event of power supply undervoltage, abnormal fre-
quency, load open, and heater disconnection.
Contact output
: 1a contact (AC250V 1A)
Warning indication : The light- emitting diode of HET lights up, and the
same of L.Vo, FRQ, or LOD flickers.
Function to limit current
Setting between 50% and 110% of rated current is possible.
Detection of
instantaneous power failure
Detects power failure (half cycle or more) and turns off output.
Restarts output in the soft-start mode after power is recovered.
Dielectric strength
AC2000V for 1 minute (for 200/220/254V type)
AC2500V for 1 minute (for 380/400/440/460/480V type)
Insulation resistance
20M
or more (by DC500V)
Summary of Contents for CALPOTE UF-1 Series
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