322

Features

• Ultra-low noise output

• Independent battery charging output

• DC output OK & battery OK alarms & LEDs

• Battery-LVD and alarm

• Over-temperature protection

• Battery fuse fail LED

Specifications

INPUT

Voltage:

190 to 264 vac, or 190 to 400VDC

Line regulation:

0.2%typical

Current:

1.4A maximum

Inrush current:

10A maximum

Frequency:

45 to 65 Hz

OUTPUT

Voltage

See table

Current

See table

Load regulation

0.5%typical

Current limit type - load cct

Constant current

Current limit type - batt. cct

Constant current

Short circuit protection

Indefi nite, auto-resetting

Over-voltage protection

17.5 to 20V latching (13.8Vdc output)

31.5 to 39V latching (27.6Vdc output)

Ripple & noise

100 MHz bandwidth

28mVp-p (13.8Vdc output)

55mVp-p (27.6Vdc output)

ENVIRONMENTAL

Operating temperature

0 to 70oC ambient with derating, 5...90%

relative humidity

(non-condensing)

Over-temperature protection

Automatic & auto-resetting

Cooling requirement

Natural convection

Efficiency

80% minimum

STANDARDS & APPROVALS

Safety

Complies with AS/NZS 60950, class 1,

NSW Office of Fair Trading Approval N20602

EMC

Emissions comply with AS/NZS CISPR11,

Group 1, Class B. Complies with ACA EMC

Scheme, Safety & EMC Regulatory Compliance

Marked

Isolation i/p-o/p

i/p-ground

o/p-ground

4242VDC for 1 minute

2121VDC for 1 minute

707VDC for 1 minute

ALARMS & BATTERY FUNCTIONS

Converter ON/OK alarm

Indicated by voltage-free changeover relay

contacts &

green LED

ON=PSU OK

Battery low (& fuse) alarm

10.2 to 12.6V for 12V battery, adjustable 20.4

to 25.2V for 24V battery, adjustable Indicated

by voltage-free changeover relay contacts &

green LED: ON=BATT OK

Low voltage disconnect

9.6 to 12V for 12V battery, adjustable

19.2 to 24V2 for 4V battery, adjustable

Charger over-load protection

Auto-resetting electronic circuit breaker

Reverse polarity protection

Internal battery fuse

Battery to load voltage drop

0.2 to. 0.25V typical

MECHANICAL

Case size

264 L x 172 W x 67 H mm

Case size with heatsink

264 L x 186 W x 67 H mm

Rack size

232 D x 19” W x 2RU H

Weight

1.9 kg

Weight with heatsink

2.1 kg

Weight (rack mounted version)

5.5 kg

PB251 Series

220-330 W A TTS DC UPS

Selection Table

MODEL

NUMBER

OUTPUT

OUTPUT

VDC

I

LOAD

I

BATT

POWER

PB251-12CM

13.8V

16A

2A

220W

PB251-12CM-H

13.8V

20A

2A

275W

PB251-24CM

27.6V

11A

2A

300W

PB251-24CM-H

27.6V

12A

2A

330W

PB251-12RML

13.8V

20A

4A

275W

PB251-12B

13.8V

20A

4A

275W

PB251-24RML

27.6V

12A

2A

330W

Note: Non standard battery

charging current available on

request. ie PB251-12CM-H-10 for

10A.