ST/STR/STA MANUAL
4
118107-001 REV J
1.3 Options
BFP
Blank Front Panel
Local control functionality and metering is removed from
the standard front panel, a popular cost saving measure
for OEM applications where the unit will only be
controlled remotely.
HS
High Stability
The standard voltage feedback divider is replaced with a
high precision voltage feedback divider providing a
50ppm/°C temperature coefficient specification.
LL(X)
High Voltage Cable Length
Custom length high voltage output cables, indicated in
foot measurement units. Various predetermined lengths
are available along with entirely custom lengths; contact
Spellman Sales Department for details.
400VAC
360-528Vac Input
This option factory configures the ST/STR to operate
from 360-528Vac, three phase, 50/60Hz input power.
This option cannot be implemented in the field.
1PH
Single Phase Input
Optional 180-264Vac single phase input voltage,
available only on STR and STA.
See Section 5 for more information on these options.
With few exceptions, these options can be retrofitted to
your power supply at the factory in a short time. For price
and retrofit arrangements, contact Spellman’s Sales
Department at:
1.4 Interpreting the Model
Number:
The model number of the power supply describes its
capabilities. After the series name “
ST
” is:
●
The maximum voltage in kV
●
The polarity of the unit: positive (P) or negative (N). 1-
10kV units are inherently reversible by design requiring
and internal wiring change to swap polarity. All units
required a polarity selection to be made at time of order.
●
The maximum output power in kilowatts
●
The option codes for all options that are included.
●
Custom units have a unique 4 digit X number after the
option code(s). This X number references a unique
specification control drawing that takes precedent over
the standard ST data sheet specifications.
