PSS1250-HS-7-5-D G.M. International s.r.l.
GM International

PSS1250-HS-7-5-D
SIL3 Power Supply System PSS1250, 24Vdc, 50-100- 150-200A, Zone 2 / Div.2 19” Rack for up to 6 modules PSM1250

The Power Supply System type PSS1250 is an anodized aluminum 19” Rack unit (4U high) suitable to accept up to 6 plug-in Power Supply Modules type PSM1250 and 1 Overview module for diagnostic functions (modules are NOT included in this ordering code). Each module provides 24Vdc, 50 A output. Modules can be paralleled with load sharing circuits which distribute current load equally to each power supply module to increase reliability and reduce internal power dissipation. The system accepts up to two independent AC power sources with nominal voltage range 110 to 240 Vac (±10%). Sixteen configurations of 19” Rack Units are available with or without Hot Swapping: eight for wall mounting and eight for frontal rack mounting, always into a cabinet. Two configurations of 9” Rack Units are available with or without Hot Swapping, only for wall mounting into a cabinet. Two configurations of 7” Rack Units are available with or without Hot Swapping, only for wall mounting into a cabinet.


STATUS

 
   ACTIVE
Product lifecycle policy (EN)

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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 (for each PSM1250 module).
Efficiency @24Vdc out (full load) better than 89 % @ 230 Vac and 86% @ 115 Vac (for each PSM1250 module).
Max. internal power dissipation @24Vdc out (full load) 150 W @ 230 Vac; 195 W @ 115 Vac (for each PSM1250 module).
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 (for each PSM1250 module).
Inrush current 37 A peak @ 264 Vac; 32 A peak @ 230 Vac; 16 A peak @ 115 Vac (for each PSM1250 module).
AC input connection screw terminal blocks suitable for 4mm2 wires on 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) (for each PSM1250 module). Parallel connection for redundancy with load sharing capability within ±5 % of output voltage setting.
Output power up to 1300 W nominal (@28Vdc out) (for each PSM1250 module).
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 at full load 20 ms (AC input) (for each PSM1250 module).
Over voltage protection output limited to 30 Vdc plus two redundant crowbars for over voltage protection at 30 Vdc (for each PSM1250 module).

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) (for each PSM1250 module).
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 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 7” fully equipped about 7 Kg, fully equipped with 2 PSM1250. 9” fully equipped about 10 Kg, fully equipped with 2 PSM1250 and 1 PSO1250 module. 19” fully equipped about 24 Kg, fully equipped with 6 PSM1250 and 1 PSO1250 module.
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 482 mm, Depth 360 mm, Height 237.30 mm (PSS1250-HS-7-1/2/3/4-D & PSS1250-7-1/2/3/4-D) . Width 442.20 mm, Depth 368.88 mm, Height 242 mm (PSS1250-HS-7-6/7/8/9-D & PSS1250-7-6/7/8/9-D) . Width 238 mm, Depth 360 mm, Height 237.30 mm (PSS1250-HS-3-D & PSS1250-3-D). Width 178 mm, Depth 360 mm, Height 237.30 mm (PSS1250-HS-2 & PSS1250-2).

Data Sheet


Datasheet of PSS1250 ( EN )

Instruction Manual


Instruction Manual PSS1250 ( EN )

Certifications


Type Description Area Number Issued by Issue Date
SIL TUV C-IS-236198-04 SIL Certificate Summary ( EN ) International C-IS-236198-04 TUV_SUD 2022-10-14

Declarations of Conformity


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

Dimensions