Maximum Inrush Currents:
Limited to six times maximum peak
operating
current.
Turn On Time: Soft start.
Hold Up Time: 20 msec. at nominal
line voltage and full load measured
from last AC crest.
Line and Load Regulation Combined:
V1 ±1.0% Minimum Load
V2 ±5.0% to
V3 ±5.0% Full Load
Note: ±1.0% All outputs on VME500 only.
Minimum Load: 20% on V1 output with
0-50% on V2/V3 outputs.
Output Noise: 100mV, peak to peak
using scope termination.
Output Ripple:
1.0% or 50 mV, whichever is greater.
Output Response Time:
400usec maximum for 25% load step to
recover to
within 1% of output voltage. Excursion during 25% load change to be
 6% measured at 75%
load to ±25%.
Storage Temperature: -40°C to +85°C.
Temperature Coefficient of Output
Voltages: 0.02% per °C maximum on V1
output only.
Efficiency: 75% typical.
Over Voltage Protection - V1 Only:
Set between 115%-135% of nominal
output
voltage. Power must be manually
recycled after over voltage trip.
Isolation: V1 is fully isolated
from V2/V3 outputs and from
chassis up
to 300 VDC.
Operating Temperature:
0°C-40°C Convection cooling. 0°C-50°C with 15 CFM
forced air
cooling. All models 0°C-70°C
derate 2.5% per °C over maximum
allowed ambient temperature. VME500 - 0°C-50°C with
100CFM
forced air cooling.
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Current Limiting Protection:
Automatic restart when overload
or
short is removed. Adjusted to 105%
-140% of maximum rated current.
Remote Sensing: Eliminates the
effect of output lead resistance
on regulation,
up to 0.25V lead
drop. Open sense lead protection
provided only on V1 output.
Reverse Voltage Protection:
Outputs protected against applied
reverse
voltages.
Brown-Out Protection: Outputs
maintained down to input line
voltages
of 85 or 170 VAC without
shutdown or damage.
Thermal Protection: Optional
Thermal Shut-down. Power must be
manually
recycled after trip.
Parallel/Power-Sharing Operation:
Units can be configured to operate
in parallel with current sharing on
V1 outputs. VME200 has current
sharing on all three outputs. N+1
redundancy is optional.
VME500 has
current sharing and N+1 capability.
Logic Interfaces:
VMEbus compatible power fail
signal (POWER FAIL).
Condition Indicators:
On/off power LED.
VME500 Front Panel Operations:
On/off power LED, output indicators
LED,
test points and voltage
adjustment for all outputs are
located on the front panel.
Safety Specifications:
Designed to meet UL 1950
EMI/RFI - FCC 2780 Part
15 Class A
MTBF:
Estimated hours at 25°C, full load. VME100 200,000 hours
VME200 140,000 hours
VME500 60,000 hours
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