Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

603-778-2300 www.wallindustries.com Fax 603-778-9797

PSS320 Series

320 Watt

Single Output

AC/DC Power Supply

FEATURES

● 2 Year Warranty

● Low Cost, High Reliability

● Fixed Switching Frequency

● Compact Size, Light Weight

● 100% Full Load Burn-In Tested

● Cooling Fan ON/OFF Auto Control

● Built-In EMI Filter, Low Ripple Noise

● AC Input Range Selectable by Switch

● Forced Air Cooling by Built-In DC Fan

● High Efficiency, Low Working Temperature

● Soft Start Circuit, Limiting AC Surge Current

● Short Circuit, Overload, Over Voltage, and Over Temperature Protected

SPECIFICATIONS: PSS320 Series

All specifications are based on 25

We reserve the right to change specifications based on technological advances.

INPUT SPECIFICATIONS

Input Voltage Range

88 ~ 132VAC / 176 ~ 264VAC auto switch (248 ~ 370VDC)

Input Frequency

47 to 63Hz

AC Current (typical)

6A @ 115VAC

3.5A @ 230VAC

Inrush Current (typical)

18A @ 115VAC

36A @ 230VAC

Leakage Current

< 3.5mA @ 240VAC

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Output Power

See Table

Voltage Tolerance (See Note 3)

5V & 7.5V outputs: ±2.0%; 12V - 48V outputs: ±1.0%

Voltage Adjustment Range

See Table

Line Regulation

±0.5%

Load Regulation

5V & 7.5V outputs: ±1.0%;

12V - 48V outputs: ±0.5%

Output Current

See Table

Ripple & Noise (max) (See Note 2)

5V - 24V outputs: 150mVp-p;

27V output: 200mVp-p;

48V output: 240mVp-p

Setup, Rise Time

2000ms, 20ms @ full load

Hold Up Time (typical)

24ms @ full load

Temperature Coefficient

±0.03%/°C (0 ~ 50°C)

PROTECTION

Overload Protection

105 ~ 135% rated output power

Protection Type: Hiccup mode, recovers automatically after fault condition is removed.

Over Voltage Protection

See Table

Protection Type: Hiccup mode, recovers automatically after fault condition is removed.

Fan Control, O.T.P

RTH1≥ 65°C Fan On, ≤ 55°C Fan Off, ≥ 70°C (5 ~ 15V)

RTH1≥ 70°C Fan On, ≤ 65°C Fan Off, ≥ 80°C (24 ~ 48V)

Protection Type: Hiccup mode, recovers automatically after fault condition is removed.

GENERAL SPECIFICATIONS

Switching Frequency

90KHz

Efficiency

See Table

Withstand Voltage

3000VAC (Input to Output), 1500VAC (Input to FG), 500VAC (Output to FG)

Isolation Resistance

100MΩ/500DC (Input to Output, Input to FG, and Output to FG)

ENVIRONMENTAL SPECIFICATIONS

Working Temperature

-10°C to +60°C (refer to output load derating curve)

Storage Temperature

-20°C to +85°C

Working Humidity

20 ~ 90% RH non-condensing

Storage Humidity

10 ~ 95% RH

Cooling

Forced air cooling by built-in DC fan.

Vibration

10 ~ 500Hz, 2G 10min./1 cycle, 60min each along X, Y, Z axes.

MTBF

188,700 hours min. @ 25°C (MIL-HDBK-217F)

PHYSICAL SPECIFICATIONS

Weight

1080 grams

Dimensions

215(L) x 115(W) x 50(H) mm

Warranty

2 years

SAFETY & EMC

Safety Standards

UL60950-1 approved