EMERSON LPQ350 Service Manual

5 (1)
EMERSON LPQ350 Service Manual

350 Watts

LPQ350 Series

Total Power: 350 Watts

Input Voltage: 85-264 VAC

120-300 VDC

# of Outputs: Quad

Electrical Specs

Input

Input range

85-264 VAC; 120-300 VDC

Frequency

47-440 Hz

Inrush current

38 A max., cold start @ 25°C

Efficiency

75% typical at full load

EMI filter

FCC Class B conducted and radiated

 

CISPR 22 Class B conducted and

 

radiated EN55022 Class B conducted

 

and radiated VDE 0878 PT3 Class B

 

conducted and radiated.

Power factor

0.99 typical

Safety ground leakage

 

current

<0.5 mA @ 50/60 Hz, 264 VAC input

Special Features

• Active power factor correction

• IEC EN61000-3-2 compliance

• Remote sense on 1st and 4th output

• Power fail and remote inhibit

• Single wire current sharing

• Built-in EMI filter

• Adjustable floating 4th output

• 2 Supervisory output 5 V and 12 V

• Overvoltage protection

• Overload protection

• Thermal overload protection

• DC power good

• 135 khz switching frequency

• Cover -C

• Optional with fan cover -CF

• Optional end-mounted fan -CEF

Environmental

Operating temperature: 0° to 50°C ambient derate each output at 2.5% per degree from 50° to 70°C

Electromagnetic susceptibility: Designed to meet IEC 801, -2, -3, -4, -5, -6, Level 3

Humidity: Operating; non-condensing 5% to 95%

Vibration: Three orthogonal axes, sweep at

1 oct/min, 5 min. dwell at four major resonances

0.7 G peak 5 Hz to 500 Hz, operational Storage temperature: -40° to 85°C Temperature coefficient: ±.04% per °C

MTBF demonstrated: >550,000 hours at full load and 25°C ambient conditions

Output

Maximum power

With cover: 350 W with 30 CFM forced

 

air, (-C) (-CF) (-CEF)

Adjustment range

± 5% min. on main: 3.3-24 V on output

 

4

Supervisory output

5 V @ 500 mA regulated, 12 @ 150 mA

 

x2

Hold-up time

20 ms @ 350 W load, 115 VAC nominal

 

line

Overload protection

Short circuit protection on all outputs.

 

Case overload protected @ 110-145%

 

above peak rating

Overvoltage protection

5 V output: 5.7-6.7 VDC.

Logic Control

 

 

 

 

Power failure

TTL logic signal goes high 50-150 msec

 

 

 

 

 

 

 

 

 

 

after 5 V output. It goes low at least 4

 

 

 

 

 

 

 

 

 

 

 

 

msec before loss of regulation

 

 

 

 

 

 

 

 

 

 

Remote on/off

Requires an external contact (N.O or

 

 

 

 

 

 

 

 

 

 

N.C) to inhibit outputs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DC-OK

 

TTL logic goes high 50-150 msec after

 

 

 

 

 

 

5 V output. It goes low when there is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

loss of regulation.

 

 

 

 

 

 

 

 

 

 

Remote sense

Compensates for 0.5 V lead drop min.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Will operate without remote sense

 

 

 

 

 

Safety

connected. Reverse

connection

 

 

 

 

 

protected.

 

 

 

 

 

 

VDE

0805/EN60950 (IEC950)

21310-3336-0001

 

 

 

 

 

 

 

 

 

 

 

 

UL

UL1950

 

E186249

 

 

 

 

CSA

CSA 22.2-234 Level 5

LR109492C

 

 

 

 

NEMKO EN 60950/EMKO-TUE

P97102061 (74-sec) 203

 

 

 

 

 

 

CB

Certificate and report

4048, 4049

 

 

 

 

 

 

CE

Mark (LVD)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

rev 12.10.03

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Technical Support: (888) 41-ASTEC or (407) 241-2752

 

 

 

 

 

128

 

Americas: (760) 930-4600

Europe (UK) 44 (1384) 842-211

Asia (HK) 852-2437-9662

 

 

 

 

 

 

 

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