Operator`s manual

Pg. 8 Vicor 800-735-6200 Westcor Division 408-522-5280 Applications Engineering 978-749-3524 or -3525 Rev. 1/99
3 Phase MegaPAC Owner’s Manual
BatPAC
The BatPAC output assembly consists of a VI-200 BatMod current source that converts the unreg-
ulated high voltage bus to the desired regulated output voltage. The converter is fused with a PC-
Tron, DC-rated, fast-acting fuse. The BatPAC is a 200 watt programmable current source that can
be configured as a battery charger. Overvoltage and overtemperature protection are not available.
Maximum current and voltage settings are controlled using potentiometers that come as a standard
feature, or through Trim pin access as an option. BatPACs are available for 12V, 24V and 48V bat-
tery systems.
QPAC
The QPAC output assembly consists of a VI-200 or VI-900 DC to DC converter that converts the
unregulated high voltage bus to the desired regulated output voltage. Each VI-200 QPAC can pro-
vide up to 200 watts of output power, and booster QPACs can be added in parallel for more power.
Each VI-900 QPAC can provide up to 400 watts of output power and slave QPACs can be added in
parallel for more power. QPACs are fused with a PC-Tron, DC-rated, fast-acting fuse. An active
preload ensures the DC to DC converter operates in its highest noise performance range. As the load
on the module increases, the preload removes itself from the circuit. Ripple and common mode
noise filters on the output reduce ripple under any load condition to 10 mV p-p or 0.15%, whichev-
er is greater. QPACs using the VI-200 module have an optional DC OK TTL signal. QPACs using
the VI-900 module have a DC OK LED as a standard feature. An optional DC OK TTL signal is
also available. All QPACs can be ordered with an optional trimpot for adjusting the output voltage.
If the trimpot option is not selected, the customer has access to the Trim pin on the module and can
adjust the output voltage using an external circuit. All QPACs have overcurrent protection with
automatic recovery when the overcurrent condition is removed. OVP and OTP are latching func-
tions and require recycling of the AC input power to restart. QPACs can only be ordered in the
extended length 3 Phase and 4kW MegaPACs.
DualQPAC
The DualQPAC output assembly consists of two VI-J00 DC to DC converters that provide two iso-
lated output voltages. DualQPACs can provide up to 100 watts of output power from each output.
DualQPACs are fused with a PC-Tron, DC-rated, fast-acting fuse. An active preload ensures the DC
to DC converters operate in their highest noise performance range. As the load on the module
increases, the preload removes itself from the circuit. Ripple and common mode noise filters on the
output reduce ripple under any load condition to 10 mV p-p or 0.15%, whichever is greater. On
DualQPACs, the customer has access to the Trim pin on the module and can adjust the output volt-
age using an external circuit. DualQPACs have overcurrent protection with automatic recovery
when the overcurrent condition is removed. Power good is standard and gives notice if either out-
put fails to regulate. OVP and OTP are not available. DualQPACs can only be ordered in the extend-
ed length 3 Phase and 4kW MegaPACs.
ConverterPAC Feature Summary
Conver
terPAC OVP OCP OTP RS LS PG TrimPot
ModuPAC Std Std Std Std Opt Opt Opt
UniPAC Std Std Std Std Opt Opt Opt
DualPAC N/A Std N/A Std Opt N/A Opt
JuniorPAC N/A Std N/A Std Opt Opt Opt
RAMPAC N/A Std N/A Std Opt Opt Opt
BatPAC N/A Std N/A N/A N/A N/A Std
QPAC Std Std Std Std Opt Opt Opt
DualQPAC N/A Std N/A Std Opt Std N/A
OVP Overvoltage Protection (latching) RS Remote Sense
OCP Overcurrent Protection (auto-recovery) LS Local Sense
OTP Overtemperature Protection (latching) PG Power Good (DC OK TTL Signal)
Table 1. Summary of ConverterPAC Features
VI-200 or
VI-900
VI-J00
VI-J00
Figure 8. DualQPAC
Figure 7. QPAC
Figure 7. BatPAC
+
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VI-200