12 1-800-735-6200
Rev 1 1 of 2
Front End Specifications:
Off-Line
(typical at T = 25˚C, nominal line, 75% load, unless otherwise specified)
Front Ends
Single Phase (250, 500, 750W)
Three Phase (1.5, 3, 5 kW)
Single or Three Phase
Strappable
AC Line Input
Strappable 115/230Vac
208 Vac +20%/–10%
(Wye or Delta, ø to ø)
N/A
With Range Strap
Without Range Strap
Line Frequency
90 Vac to 135Vac
180 Vac to 270Vac
N/A
47 to 63 Hz (“C” Grade)
47 to 440 Hz (“I” Grade)
47 to 63 Hz (“C” Grade)
47 to 440 Hz (“I” Grade)
Features
■ 250W, 500W, 750W, 115/230Vac
Strappable Single-Phase
■ 1.5, 3, 5 kW, 208Vac Three-Phase
■ 20-50 mS Holdup
Line Inrush Current
115Vac Operation
230Vac Operation
240Vac Operation
35A at peak line
67A at peak line
52A at peak line
■ UL, CSA, TÜV, VDE, BABT
■ FCC/VDE Class B (single-phase)
■ FCC/VDE Class A (three-phase)
■ BUS OK, AC OK, DC OK
Status Signal
■ 96-98% Efficiency
■ PC and Chassis Mount
■ VI-26X, VI-J6X Series Compatible
■ CE Marked
AC Leakage Current
1.9 mA max. at 250Vac,
63 Hz (“C ” Grade)
3.2 mA max. at 208Vac, 63 Hz
Power Factor (at full load)
0.52 to 0.65 (at low line input)
0.9 (typical at nom. line)
Holdup Time (at full load)
Low Line
250W (60 Hz): 4 ms min.
500, 750W (60 Hz): 7 ms min.
250W (60 Hz): 27 ms min.
500, 750W (60 Hz): 29 ms. min.
Nominal Line
20 ms min. (47 Hz)
5 ms min.
AC Fail Warning Time
(at full load)
250W: None
500, 750W: 6 ms min.
Product Highlights
Module Gate Control Output Called BUS OK
(open drain FET, non-isolated,
referenced to –DC output)
Called Module Enable
From AC line in, to highly regulated DC
out, Vicor offers the total design solution
through a complete family of off-line front
end and DC-DC modular power components.
ENABLE
Active High (FET cutoff)
Active High (FET cutoff)
Power-up threshold >227V
Vds max: 15V zener clamp
Vds max. 18V transorb clamp
Power up threshold DC bus:
250W: 216V, 12%
Vicor’s family of off-line front ends
interface VI-260 and VI-J60 series
DC-DC converters, and MegaMods, to
100, 115, 230 or 240Vac single-phase and
208Vac three-phase mains. In addition,
front ends provide conducted EMI/RFI
filtering to FCC/VDE (Class B single-
phase, Class A three-phase), transient
surge protection, active inrush limiting, a
BUS OK status output (suitable for
controlling Vicor DC-DC converter
modules via their Gate In pin) and an AC
OK status output for system use in the
event of loss of the AC line.
500, 750W: 244, 3.5%
ENABLE
Inactive state (DC BUS <190V 5%) Inactive state (DC BUS <187Vdc)
Current sinking 100 mA @
.3 Vds max., threshold DC bus
250W: 172V, 16%
Current sinking 100 mA @
.3Vds max.
500, 750W: 175V, 3.5%
AC OK and BUS OK Status
Outputs (optically isolated,
transistor output; 500W,
750W only)
500, 750W only
AC OK and BUS OK
70 Vce max.
Off State Breakdown
Voltage
70Vce max.
On State Voltage
On State Current
On State Threshold
(no load)
Off State Threshold
(load dependent)
.4Vce (sat.) max. at 1 mA
15 mA max.
.4 Vce (sat.) max. at 1 mA
15 mA max.
>210 Vdc/187Vac
80-89Vac
Operating Temperature
85-76Vac
<205 Vdc/<182Vac
(Free Convection)
C: 0°C to +50°C (750W: +45°C)
I: -20°C to +50°C (750W: +45°C)
Conducted EMI/RFI
Dielectric Withstand
VDE 0871/FCC part 15, Class B
AC line (both phases)
to GND or case
VDE 0871/FCC part 15, Class A
AC line (all phases)
to GNDorcase
1.5 kVAC; 2121Vdc
1.5 kVAC; 2121Vdc
Storage Temperature
-40°C to +80°C
Transient Surge Withstand IEC 61000-4-5, Level 3
Capability (with no disruption
of function)
IEC 61000-4-5, Level 3
Common Mode
1.2/50 µs, 2 kV,
either polarity
1.2/50 µs, 2 kV,
either polarity
0 to 360 degree phase angle with
respect to AC line
0 to 360 degree phase angle with
respect to AC line
Normal Mode
1.2/50 µs, 1 kV pulse,
either polarity
1.2/50 µs, 1 kV pulse,
either polarity
0 to 360 degree phase angle with
respect to AC line
0 to 360 degree phase angle with
respect to AC line