Common

Standard Features

1ø to 3ø programmable (TW 5250 only)
WaveForm trigger output (1 M Load Drive)
SYNC OUT

Programmed Settings

The Sync out selections are:
Even Cycle A phase (on)
None (off)
When change in programmed parameters occur (event)
External Summing Node 0 to 5 Vrms provides 0 to 100% output

Interface

IEEE-488.2 interface and RS-232

Protocol

SCPI protocol

Certifications

CE marked and FCC compliant

Calibration Interval

1 year

Input

Voltage Ranges

Factory configured 187 to 264 Vrms, 3ø L-L (3 wire). A chassis ground is also required.

Power Factor

0.6 (0.99 with input PFC option, 0.35 for European rectifier input)

Frequency Range

47 to 63 Hz

Efficiency

70% min, at full load

Ride Through

3 ms, min for rectifier input; 10 ms, min, with PFC option

Output

Power

1750 VA, 3500 VA or 5250 VA

Phase

1750 VA, 1 phase; 3500 VA, 1 or 2 phase; 5250 VA, 1, 2 or 3 phase

AC Output Voltage

0 to 156 Vrms L-N low range
0 to 312 Vrms L-N high range

DC Output Voltage

0 to 207V low range
0 to 414V high range

Current Per Phase

13A to 135V in 156V range; 6.5A to 270V in 312V range (per 1750 VA module); 16A to 115V in low range; 8A to 230V in high range (per 1850Va module)

Power Factor of Load

0 lagging to 0 leading

Crest Factor

4.0 (peak output current to rms output current)

Frequency Range

45 Hz to 500 Hz

Max Total Harmonic Distortion

0.3% max (Full Linear Load or No Load)

AC Noise Level

60 dB rms below full output voltage

Amplitude Stability With Remote Sense

±0.1% of full scale over 24 hours at constant line, load and temperature

Line Regulation

0.05% of full scale for a ± 10% change in line voltages

Load Regulation

0.15% of full scale

Voltage Accuracy

± 0.1% of full scale

Voltage Resolution

0.03% of full scale

Frequency Resolution

0.1 Hz

Phase Accuracy

Phase-to-Phase Balanced Linear Resistive Load: ±1°

Phase Angle Resolution

0.1°

Remote Output Voltage Sense

5 Vrms total lead drop, max

Environmental

Operating Temperature

0°C to 45°C (32°F to 113°F)

Storage Temperature

-40°C to 70°C (-40°F to 158°F)

Cooling

Air is drawn in primarily from the front, but also from the top, bottom, and sides and exhausted through the rear.

Humidity (Non-condensing)

0 to 85%, 31°C (88°F); derate to 50% at 40°C (104°F)

Altitude

Operating 6,500 ft. Non-operating 40,000 ft

Physical

Dimensions

Width: 19″ (483 mm)
Height: 8.75″ (222 mm)
Depth: 24.1″ (613 mm)

Weight

TW 1750 – 60 lbs. (27.3 kg), TW 3500 – 83 lbs. (37.7 kg), TW 5250 – 108 lbs. (49 kg)

Shipping Weight – US

TW 1750 – 130 lbs. (59 kg), TW 3500 -153 lbs. (69.5 kg), TW 5250 – 178 lbs. (80.9 kg)

Measurement Accuracy All at 25° ± 5°C

Power

2.5% of full scale

Voltage

0.3% of full scale + 0.2% of reading

Shipping Weight

12.7 lbs. (5.8 kg)

Current

0.3% of full scale + 0.5% of reading

Apparent Power

2.5% for output > 200 VA

Frequency

0.25%

Phase

0.5°

Protection and Safety

Overvoltage Shutdown

Programmable for 20V to 255V peak, 156V range; 40V to 510V peak, 312V range

Programmable Current Limit Shutdown

Settable to 1% of range (0.5A to 13A for 156V range; 0.5A to 6.5A for 312V range)

Programmable Current Limit
with Timed Shutdown

Settable to 1% for range; the timeout is settable from 10 ms to 10s

Programmable Constant Current

Settable to 1% of range (0.5A to 13A for 156V range; 0.5A to 6.5A for 312V range). For all current accuracies, add ± 1.5%/ kHz above 500 Hz. For paralleled amplifiers, add ± 1%.

Over temperature Shutdown

Automatic, not programmable