PSM1250 G.M. International s.r.l.
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PSM1250

  1. Products
  2. Power Supply
  3. Power Supply System
PSM1250
SIL3 Power Supply, 24vdc, 50 A, Zone 2 / Div. 2

The Power Supply type PSM1250 is an anodized aluminum unit for PSS1250. The Supply provides 24Vdc, 50A output. Modules can be paralleled on PSS1250 with load sharing circuits which distribute current load equally to each power supply module to increase reliability and reduce internal power dissipation. The Supply accepts AC power sources from 110 to 240 Vac (+/- 10%).

FEATURES

  • SIL 3 for NE Load according IEC 61508:2010, with single PSM1250 module or more PSM1250 modules in redundant configuration (see ISM0219 for more information).
  • SIL 1 for ND Load according to IEC 61508:2010, with single PSM1250 module (see ISM0219 for more information).
  • SIL 2 for ND Load according IEC 61508:2010, with more PSM1250 modules in redundant configuration (see ISM0219 for more information).
  • Systematic capability SIL 3.
  • 2 universal AC Input Lines, nominal 110 to 240 Vac (±10%) (48 to 62 Hz).
  • Power factor correction.
  • Installation in Zone 2 / Div. 2 hazardous locations with hot swappable modules.
  • EMC Compatibility to EN61000-6-2, EN61000-6-4.
  • ATEX, IECEx, UL & C-UL, TÜV Certifications.
  • TÜV Functional Safety Certification.
  • Tested for maritime applications.
  • Highly regulated output of 24 Vdc, 50 A, for PSM1250 module.
  • Under and over voltage alarm monitoring.
  • 3 over voltage redundant protections.
  • Redundant parallel connections with load sharing.
  • Reduces Power dissipation (in parallel/redundant configuration) by replacing a Schottky diode with Mosfet Active Ideal Diode.
  • 89% efficiency @230 Vac input and 24 Vdc output with full load.
  • Fan speed control depending on ambient temperature and output power.
  • High load fuse breaking capability without interrupting operations.
  • Module for 19” or 9” or 7” Rack unit, 4 U high,anodized aluminium, durable metal enclosure.
  • Tropicalization for electronic components.
  • Module parameters are visible by Modbus RTU RS-485 diagnostic output (with PSO1250 diagnostics only for 19” or 9” rack units).

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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 (AC input) 0.98 typ.@230Vac, 0.995 typ.@115Vac, full load.
Efficiency @24Vdc out (full load) better than 89 % @ 230 Vac and 86% @ 115 Vac.
Max. internal power dissipation @24Vdc out (full load) 150 W @ 230 Vac; 195 W @ 115 Vac.
AC input current (sinusoidal at full load) @24Vdc out 14.2A @100Vac input voltage, 12.2 A @115 Vac input voltage, 6.1 A @230 Vac input voltage.
Inrush current 37 A peak @ 264 Vac; 32 A peak @ 230 Vac; 16 A peak @ 115 Vac.
AC input connection screw terminal blocks suitable for 4mm2 wires on PSS1250 back panel pcb.

Isolation
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 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 (@24Vdc out). Parallel connection for redundancy with load sharing capability within ±5 % of output voltage setting.
Output power up to 1300 W nominal (@28Vdc 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 PSS1250 back panel pcb.
Hold-up time at full load 20 ms (AC input).
Over voltage protection output limited to 30 Vdc plus two redundant crowbars for over voltage protection at 30 Vdc.

Power good signaling
Output good 19.5 V ≤ Vout ≤ 29.5 V.
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 PSS1250 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 Usable only with 7” or 9” or 19” Rack unit, 4 units high. 7” or 9” Rack unit for wall mounting, into a cabinet. 19” Rack unit for wall mounting or for frontal rack mounting, into a cabinet.
Weight 2.2 kg.
Location installation in Safe Area/Non Hazardous Locations or Zone 2, Group IIC T4 or Class I, Division 2, Group A,B,C,D, T4.
Protection class IP 20, Open Type.
Dimensions Width 60 mm, Depth 345 mm, Height 172 mm.

Data Sheet


Datasheet of PSS1250 ( EN )

Instruction Manual


Instruction Manual PSS1250 ( EN )
CCC Ex safety instruction manual for PSx1200 series ( EN | CN )

Certifications


Type Description Area Number Issued by Issue Date
ATEX DEKRA ATEX PSS1250, PSW1250, PSW1230 Series English Certificate ( EN ) Europe BVS 15 ATEX E 006 X DEKRA 2022-08-01
Ex PSx1200 CCC certificate for China ( EN ) China 2020322303000822 NEPSI 2023-04-30
FSM TUV IT 22 SIL 0093 Functional Safety Certificate ( EN ) International TUV IT 22 SIL 0093 TUV_SUD 2022-07-25
IECEx DEKRA IECEx PSS1250, PSW1250, PSW1230 Series Certificate ( EN ) International IECEx BVS 15.0006X DEKRA 2022-09-08

Declarations of Conformity


EU Declaration of Conformity for PSS1250, PSW1250, PSW1230 ( 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 )

Dimensions