12
1-800-735-6200
Specifications
VI-HAM and VI-HAMD With External Bridge and Synchronization Diodes, 1000 µF Output Capacitor and Vicor Line Filter P/N 07818.
VI-BAMD When Operated with VI-HAM and VI-HAMD, Respectively.
(Unless otherwise indicated, specifications apply over operating input voltage and temperature range)
Parameter
Line Input
47–63 Hz
Output Power
VI-HAM
85V to 264V
(Volts AC)
Up to 600W
VI-HAMD
85V to 264V
(Rectified AC)
Up to 600W
90-91% (With ext. rectifier loss)
93-94% (With ext. rectifier loss)
0.99
<7.5%
<8.5%
7V p-p
5V p-p
<13A peak
<20A peak
500-3000 µF
16 ms
Included in the
external filter
VI-BAMD
85V to 264V
(Rectified AC)
Up to 600W
90–91% (With ext. rectifier loss)
93–94% (With ext. rectifier loss)
0.99
<7.5%
<8.5%
7V p-p
5V p-p
<13A peak
<20A peak
500-3000 µF
16 ms
Included in the
external filter
Isolation provided
by DC-DC converters
Note: Not short circuit protected
Remarks
Unit will operate from 400 Hz, but
may not meet PF or THD specs
Derate from 110Vac to 85 Vac @
8W/Volt
120Vac, full load
240Vac, full load
120/240Vac, 50-100% of full load
Sinusoidal, 120Vac, full load
Sinusoidal, 240Vac, full load
120Vac, full load
240Vac, full load
120Vac, full load
240Vac, full load
External to HAM (for 600W load)
(1000 µF Nom.)
600W output with a 1000 µF hold-
up capacitor (300W = 500 µF, etc.)
Efficiency
90–91%
Efficiency
93–94%
Power Factor
0.99
Total Har. Distortion (line current)*
<7.5%
Total Har. Distortion (line current)*
<8.5%
Output Ripple
7V p-p
Output Ripple
5V p-p
Inrush Current
<13A peak
Inrush Current
<20A peak
Output Capacitance
500-3000 µF
Ride Through/Holdup Time
Transient Surge Withstand,
Normal Mode
Isolation Voltage
Input to Output
Input to Baseplate
Output to Baseplate
Auxiliary Output
16 ms
Included in the
external filter
None
None
None
1,500 VRMS
1,500 VRMS
1,500 VRMS
1,500 VRMS
1,500 VRMS
1,500 VRMS
19-23Vdc
19-23Vdc
19-23Vdc
@
≤3
mA
@
≤3
mA
@
≤10
mA
Thermal Shutdown
90°C-100°C baseplate
90°C-100°C baseplate
N/A
Baseplate Temperature
-10°C to +85°C (E-Grade) -25˚C to +85˚C (C-Grade) -40˚C to +85˚C (I-Grade) -55˚C to +85˚C (M-Grade)
Storage Temperature
-40˚C to +100˚C (C-Grade) -55˚C to +100˚C (I-Grade) -65˚C to +100˚C (M-Grade)
Short Circuit Protection
Yes
Yes
Yes
MTBF (GB, 25˚C)
>420,000 hours
>424,000 hours
>818,000 hours
Size
4.6" x 2.4" x 0.5"
4.6" x 2.4" x 0.5"
4.6" x 2.4" x 0.5"
(116,8 x 61,0 x 12,7)
(116,8 x 61,0 x 12,7)
(116,8 x 61,0 x 12,7)
Weight
6 Ounces (170 Grams)
6 Ounces (170 Grams)
6 Ounces (170 Grams)
* ITHD = HAMTHD – VTHD
Line current total harmonic distortion = input voltage distortion plus 8.5% max.
Application of the VI-HAM
The VI-HAM must be used in conjunction
with a suitable line filter, such as Vicor’s P/N
07818**, output holdup capacitor and Vicor
DC-DC converters (see
Fig. 9).
Connect
single phase AC mains to the input of the line
filter via a standard 10A AC fuse. Connect
the output of the filter to L1 and L2/N of the
VI-HAM. Do not put an X capacitor across
the input of the VI-HAM or use a line filter
with an X capacitor on its output as power
factor correction may be impacted. Connect
the +Output of the VI-HAM to the +Input of
the converters via a 3A PC Tron DC fuse.
Connect the -Output of the VI-HAM to the -
Input of the converters. Connect a 1000 µF
electrolytic capacitor rated at a minimum of
450Vdc across the + and -Output of the VI-
HAM (or 500 µF for 300W, etc). This
capacitor must be in close proximity to the
VI-HAM. Connect the Enable Output of the
VI-HAM to the Gate Input of each driver
converter to disable the converters until the
output of the VI-HAM is within normal
operating range. Please refer to Vicor's
Applications Manual for information on the
proper connection of the DC-DC converters.
The aforementioned connections are the
minimum required. In addition, there are
other features available.
• The Auxiliary Supply output is approximately
21V at 3 mA max. This output is usually used
in conjunction with the Power OK signal.
Power OK provides an indication of the
status of the DC output and the AC mains.
• The Enable Output of the VI-HAM must be
connected to the Gate Input of all driver
modules. The VI-HAM will then disable the
module output until the input exceeds 85Vac
and the output has been boosted to 260Vdc.
If an external load is connected directly to the
output of the VI-HAM, do not apply the load
until the output of the VI-HAM is in boost mode.
• Although the efficiency of the VI-HAM is
quite high, it still dissipates significantly
more power than a VI-200 DC-DC converter.
Care should be taken to cool it. Thermal
compound should be used between the
heatsink and baseplate of the VI-HAM,
VI-HAMD and VI-BAMD.
• When making any connections to the
VI-HAM for measurement purposes,
remember that it is not isolated from the
line — either input or output. A line
isolation transformer must be used when
making scope measurements.
• The input voltage range of the VI-HAM is
85 to 264Vac; however it may not start
boosting until the AC mains has exceeded
87Vac. Once the VI-HAM has started, it will
operate down to 85Vac. The VI-HAM
contains 2.5 to 6V of input hysteresis,
therefore if the AC line impedance is high,
i.e., when using a variable autotransformer,
the VI-HAM may start, but the AC line may
then fall enough to drop below undervoltage
lockout. When this happens the AC line will
go up, the VI-HAM starts and the cycle
repeats. Therefore avoid soft AC lines at or
near low line.
**Contact the Vicor technical support center for filter substitutes
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
HAM, Harmonic Attenuator Module
Rev. 1.1
Page 4 of 6
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