PSS1250-HS-7-48-D-F

The Power Supply System type PSS1250-HS-7-48-D is an
anodized aluminum 19” Rack unit (4U high) suitable for 4 plug-in Power Supply Modules
type PSM1250 and 1 Overview module type PSO1250 for diagnostic functions (modules are NOT included in this ordering code).
Four PSM1250 are divided in two groups and each group is composed by 2 PSM1250
with paralleled outputs and with load sharing circuits which distribute current load equally
to each PSM1250 to increase reliability and reduce internal power dissipation. Therefore,
each group provides 24Vdc and 50 A output with redundancy. Two groups have their
outputs connected in series by internal copper bar, therefore PSS1250-HS-7-48-D
system provides 48Vdc and 50 A output with redundancy. The system accepts up to two
independent AC power sources with nominal voltage range 110 to 240 Vac (±10%).
Two configurations of 19” Rack Units are available with Hot Swapping: for
wall mounting and for frontal rack mounting, always into a cabinet.

• SIL 3 for NE Load according IEC 61508:2010, (see ISM0528 for more information).
• SIL 2 for ND Load according IEC 61508:2010, (see ISM0528 for more information).
• Systematic capability SIL 3.
• 2 universal AC Input Lines, nominal 110 to 240 Vac (±10%) with 48 to 62 Hz frequency.
• Power factor correction.
• Hot swappable modules.
• Modbus RTU RS-485 diagnostic output.
• Reduces Power dissipation (in parallel/redundant configuration of each group)
• by replacing a Schottky diode with Mosfet Active Ideal Diode.
• 89% efficiency @230 Vac input and 48 Vdc output with full load.
• PSM1250 fan speed control depending on ambient temperature and output power.
• High load fuse breaking capability without interrupting operations.
• 19” Rack unit, 4 U high,anodized aluminium, durable metal enclosure.
• Tropicalization for electronic components.
• Highly regulated output of 48 Vdc - 50 A, due to 24 Vdc out for each PSM1250 module.
• Under and over voltage alarm monitoring, for each PSM1250 module.
• 3 over voltage redundant protections, for each PSM1250 module.
• For each group, redundant parallel connection of PSM1250 modules with load sharing.

Datasheet
Instruction manual
Product page