PSS1250-HS-7-48-D-W G.M. International s.r.l.
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PSS1250-HS-7-48-D-W

  1. Products
  2. Power Supply
  3. Power Supply System
PSS1250-HS-7-48-D-W
SIL 3 Power Supply System PSS1250, 50A (+50 A redundant) 19” Rack with 4 modules PSM1250

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.

FEATURES

  • 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.
  • EMC Compatibility to EN61000-6-2, EN61000-6-4.
  • TÜV Functional Safety Certification.
  • 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.
  • 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.
  • Modbus RTU RS-485 diagnostic output.

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Technical Data


Supply
AC Input voltage nominal 110 to 240 Vac (±10%), with frequency range 48 to 62 Hz.
Power Factor Correction (full load) 0.95 typ.@230Vac, 0.99 typ.@115Vac, 4 PSMs; 0.98 typ.@230Vac, 0.995 typ.@115Vac, only 2 PSMs: 1st & 5th OR 2nd & 6th.
Efficiency @48Vdc out (full load) ≥ 85 % @ 230 Vac , ≥ 82.5% @ 115 Vac, 4 PSMs; ≥ 89 % @ 230 Vac , ≥ 86% @ 115 Vac, only 2 PSMs: 1st & 5th OR 2nd & 6th.
Max. internal power dissipation @48Vdc out (full load) 425 W @ 230 Vac , 505 W @ 115 Vac, 4 PSMs; 305 W @ 230 Vac , 395 W @ 115 Vac, only 2 PSMs: 1st & 5th OR 2nd & 6th.
AC input current (sinusoidal at full load) @48Vdc out 30 A @100Vac, 25.7 A @115 Vac, 13 A @230 Vac, 4 PSMs; 28.4A @100Vac, 24.4 A @115 Vac, 12.1 A @230 Vac, 2 PSMs:1st & 5th OR 2nd & 6th
Inrush current (each PSM) 37Apk @ 264Vac; 32Apk @ 230Vac; 16Apk @ 115Vac.
AC input connection screw terminal blocks suitable for 4mm2 wires on back panel pcb.

Isolation (Test Voltage)
Input to Output isolation 2500 Vrms (routine test).
Input to Earth-Ground isolation 1500 Vrms (routine test).
Earth-Ground to Output isolation 500 Vrms (routine test).
Output or Earth-Ground to Fault contact isolation 500 Vrms (routine test)

Output
Voltage 48 Vdc (adjustable from 42 to 56 Vdc) for whole system. Each PSM1250 output is 24 Vdc (adjustable from 21 to 28 Vdc).
Regulation 0.4 % for a 100 % load change.
Stability 0.01 % for a 20 % line voltage change.
Ripple ≤ 250 mVpp
Output current 50 A nominal (@48Vdc out)
Output power up to 2400 W nominal (@48Vdc out), max 2600 W nominal (@56Vdc out).
Output Rise Time 2.5 s.
Dynamic Response 2 ms for 0-100% load change (overshoot ±1.5% of Vout setting).
Connection M6 screw terminals on copper bars suitable for lug (at least 6.5 mm hole diameter) with 16mm2 wire on back panel pcb.
Hold-up time (AC in) at full load 40ms (4 PSMs), 20ms (2 PSMs:1st&5th OR 2nd&6th)
Over voltage protection each PSM1250 output is limited to 30 Vdc plus two redundant crowbars for over voltage protection at 30 Vdc. Therefore, PSS1250(-HS)-7-48-D output is upper limited to 60 Vdc maximum value.

Power good signaling (each PSM1250)
Output good 19.5 V ≤ Vout ≤ 29.5 V (see page 4 for more information).
Indication via LCD screen on PSO1250 and Modbus RTU RS-485 protocol.
Signaling voltage free SPST normally energized relay (contact closed), de-energize in over/under voltage conditions (contact open).
Contact rating 2 A 50 Vac 100 VA, 2 A 24 Vdc 48 W (resistive load).
Connection screw terminal blocks suitable for 1.5 mm2 wires on back panel pcb.

Environmental conditions

Operating temperature limits -40 to +70°C de-rated linearly 65-70% load above 50°C
Relative humidity limits 95 %, up to 55 °C.
Transport, storage temperature limits - 45 to + 85 °C
Max altitude 2000 m a.s.l.

Mechanical
Mounting 19” Rack unit for wall mounting or for frontal rack mounting, into a cabinet.
Weight 19” fully equipped about 20 Kg, with 4 PSM1250 and 1 PSO1250 module.
Location installation in Safe Area/Non Hazardous Locations.
Protection class IP 20, Open Type.
Dimensions Width 482 mm, Depth 360 mm, Height 237.30 mm (PSS1250-HS-7-48-D-W). Width 442.20 mm, Depth 368.88 mm, Height 242 mm (PSS1250-HS-7-48-D-F).

Data Sheet


Datasheet of PSS1250(-HS)-7-48-D -F or -W ( EN )

Instruction Manual


Instruction Manual of PSS1250(-HS)-7-48-D -F or -W ( EN )

Declarations of Conformity


EU Declaration of Conformity for PSS1250-2-48, PSS1250-HS-7-48-D-* ( EN | IT )
EU Declaration of Conformity for RoHS, ASBESTOS. ( EN )
Declaration of G3 compliance for D1000_PSD1000-PSD1001-PSD1001C-PSD1004-PSD1220-PSD1220-098 SERIES ( EN )

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