BEHLMAN BL10000 Series, User'S Manual And Technical Reference Manual

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2.3 3 PHASE INPUT POWER REQUIREMENTS ( continued )
!
WARNING
SUPPLEMENTAL PROTECTION FOR 600V INPUTS.
Units supplied with a Wye or Delta connection higher than 277 ( line to neutral) require back-up fuses
for proper protection. These fuses should be rated at least 600V at a current rating of no more than 30
amps. The fuse interrupt rating is dependant on the installation site capacity. Consultation with an
experienced electrician is recommended. The interrupt rating of the power supply’s front panel breaker
is 10KA @ a maximum of 277V.
2.4 UNITS WITH T10 OR T10D OPTIONS
The diagram below illustrates chassis inter-connection for units provided with the T10 or T10D options.
The T10D units are dual range versions of the standard T10 type. As shown below this option includes
an additional 7.0 inch high chassis to house the external transformers and range relay for T10 units.
Units supplied with T10 options may vary slightly depending on actual customers requirements. Units
with a or 0 to 300 Vac output are considered standard. Units supplied with other voltages will be
assigned a 4 digit engineering number. T10 units require some special operating considerations. Refer
to section 3 of this manual for operating instructions.
Figure 2-3. T10 / T10D option interconnect