290

PB256 Series

138 W A TTS DC UPS

Features

• Ultra-low noise output

• Independent load & battery charging current

limiting

• DC output OK & battery OK alarms & LEDs

• Battery-LVD and low alarm

• Over-temperature protection

• Battery fuse fail LED

Specifications

INPUT

Voltage

190...264 vac, or 190...400VDC

Line regulation

0.2% typical

Current

3A maximum

Inrush current

15A on cold start

Frequency

45 to 65 Hz

OUTPUT

Voltage

See table

Current

See table

Load regulation

2% typical

Current limit type

(Load circuit)

Constant current > LVD volts

Foldback & hiccup < LVD volts

Current limit type

(Battery circuit)

Constant current

Short circuit protection

Indefinite, auto-resetting

Over-voltage protection

15.5 to 19.5 V latching (13.8Vdc output)

31.5 to 39 V latching (27.6Vdc output)

Ripple & noise

25 mVp-p (13.8Vdc output)

45mVp-p (27.6Vdc output)

ENVIRONMENTAL

Operating temperature &

humidity

0 to 50oC ambient with derating;

5 to 90% relative humidity (noncondensing)

Over-temperature protection

Automatic & auto-resetting

Cooling requirement

Natural convection

Efficiency

80% minimum

STANDARDS & APPROVALS

Safety

Complies with AS/NZS 60950, class 1

EMC

Emissions comply with AS/NZS CISPR11, Group

1, Class B. Complies with ACA EMC Scheme, C-

Tick

Isolation input - output

input - ground

output - ground

4242VDC for 1 minute

2121VDC for 1 minute

707VDC for 1 minute

ALARMS & BATTERY SPECIFIC FUNCTIONS

Charger output OK alarm

Indicated by voltage-free changeover relay

contacts & green LED: ON=OK

Battery low alarm

Indicated by voltage-free changeover relay

contacts & green LED: ON=OK

Low voltage disconnect:

10.8V (Typical for 12Vdc battery)

21.6V (Typical for 24Vdc battery)

Battery over-load protection

Electronic circuit breakerauto-reset

Reverse polarity protection

Internal fuse

Battery to load voltage drop

0.4 V (13.8V output)

0.2 V (27.6V output)

MECHANICAL

Case size

230 L x 93 W x 46 H (mm)

Weight

850g