Elgar CW 1251P Continuous Wave Low Profile AC Source 1250 VA
Description
The ContinuousWave (CW) Series of AC power sources provide clean single phase power at an impressive price/performance ratio. These compact switch mode sources come in two series, manual (CW-M) or programmable (CW-P) with standard IEEE-488.2 or RS-232 control. Both series have three power levels, 800 VA, 1250 VA and 2500 VA. The 800 and 1250 VA models are 2U (3.5″) high and allow the unit under test to be connected to the front or rear panel. The 2500 VA model is 3U (5.25″) high with rear panel output connections. All models can be operated in a benchtop or rackmount configuration.
The front panels have two bright four digits, seven segment displays. Power Factor Corrected (PFC) universal input voltage allows maximum power to be delivered from an AC outlet without the user selecting the range. Fully rated current is delivered for either output voltage range of 135 VAC or 270 VAC over a standard frequency range of 45 to 500 Hz. Both series can be paralleled to provide extra power. A separate output-on switch controls power to the load. Remote voltage sense is standard. Transformer coupled output is protected against overvoltage and overcurrent. The unit is also protected against over temperature conditions. A two-speed fan results in quieter operation at lower power levels. All models are CE marked.
Features
- Wide range PFC Input
- Low THD and AC noise
- Advanced Measurement Available
- Field Parallel Configurable
- Multiple Units Configurable for Poly-Phase Operation
- Power: 2500VA
- Voltage: 0-135 Vrms, 0-270Vrms, user selectable
- Current: 18.6 Arms, 9.3Arms
Elgar CW1250P Applications
The ContinuousWave (CW) is designed for testing single or polyphase electronics. The CW is well suited for applications requiring a cost-effective low profile AC source.
Applications Include
- Testing for real world sine wave power conditions
- 400 Hz testing for avionics equipment
- 50/60 Hz margin testing
- Ballast testing
- Components testing
- Power supply testing for AC to DC converters
Specifications
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Model |
CW 801M |
CW 1251M |
CW 2501M |
CW 801P |
CW 1251 P |
CW 2501P |
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Power |
800 VA |
1250 VA |
2500 VA |
90 – 264 VAC |
1250 VA |
2500 VA |
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Voltage |
90 – 264 VAC |
103 – 264 VAC |
180 – 264 VAC |
90 – 264 VAC |
103 – 264 VAC |
180 – 264 VAC |
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Current |
13 ARMS max |
18.5 ARMS max |
19.5 ARMS max |
13 ARMS max |
18.5 ARMS max |
19.5 ARMS max |
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Frequency |
47 to 63 Hz |
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Phases |
single-phase |
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Power Factor |
>0.99 typical at full load nominal line |
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Efficiency |
>73% typical at full load |
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Output |
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Model |
CW801M |
CW 1251M |
CW 2501M |
CW 801P |
CW 1251P |
CW 2501P |
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Power |
800 VA |
1250 VA |
2500 VA |
90 – 264 VAC |
1250 VA |
2500 VA |
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Voltage |
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Voltage ranges |
0 to 135 Vrms, 0 to 270 Vrms, user selectable |
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Accuracy (>5VAC) |
± 1% of range |
±0.1% of range <100 Hz, ± 0.2% of range >100 Hz |
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Resolution |
0.1 Vrms |
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Total harmonic distortion |
0.25% typical <100Hz add 0.5%/100 Hz above 100 Hz |
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AC noise level (typical) |
<50 VRMS |
<50 VRMS |
<100 VRMS |
<50 VRMS |
<50 VRMS |
<100 RMS |
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Amplitude stability¹ |
±0.1% of full scale |
±0.05% of full scale |
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Load regulation |
±0.1% of full scale voltage for a full resistive load to no load (<10 mVRMS typical, measured at point of sense) |
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Line regulation |
±0.1% of full scale voltage for a ±10% line change from nominal line voltage (<5 mVRMS typical, measured at point of sense) |
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Remote voltage sense |
5 Vrms total lead voltage drop |
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Current |
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135VAC Range |
6.0 ARMS |
9.4 ARMS |
18.6 ARMS |
6.0 ARMS |
9.4 ARMS |
18.6 ARMS |
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270VAC Range |
3.0 ARMS |
4.7 ARMS |
9.3 ARMS |
3.0 ARMS |
4.7 ARMS |
9.3 ARMS |
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Accuracy |
± 0.5% typical |
± 0.5% max |
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Resolution |
0.1 ARMS |
0.01 ARMS |
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Frequency range |
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Range |
45 to 500 Hz |
45 to 500 Hz, 45 to 1000 Hz (option) |
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Accuracy |
±0.5% typical |
±0.02% max |
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Resolution |
0.1 Hz |
0.1 Hz, 0.01 Hz for remote programming |
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Phase |
All models single phase output. Multi-phase system configuration with Digital Expansion Cable |
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Power factor of load |
0 lag to 0 lead |
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Physical |
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Model |
CW 801M |
CW 1251M |
CW 2501M |
CW 801P |
CW 251P |
CW 2501P |
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Height |
3.5 in. |
3.5 in. |
5.25 in. |
3.5 in. |
3.5 in. |
5.25 in. |
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Width |
19 in. |
19 in. |
19 in. |
19 in. |
19 in. |
19 in. |
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Depth |
20.07 in. |
20.07 in. |
20.07 in. |
20.07 in. |
20.07 in. |
20.07 in. |
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Weight |
48 lbs (22 kg) |
53 lbs (24 kg) |
86 lbs (39 kg) |
48 lbs (22 kg) |
53 lbs (24 kg) |
86 lbs (39 kg) |
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Shipping Weight |
56 lbs (25 kg) |
61 lbs (28 kg) |
94 lbs (43 kg) |
56 lbs (25 kg) |
61 lbs (28 kg) |
94 lbs (43 kg) |
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Environmental |
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Operating Temperature |
0 to 40°C |
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Storage Temperature |
-40 to +70°C |
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Humidity Range |
0 to 85% at 25°C derate to 50% at 40°C (non condensing) |
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Altitude |
Operating full power available up to 6,000 feet, non operating to 40,000 feet |
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Cooling |
Dual fan speed with side air intake, exhaust to rear |
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General |
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Regulatory compliance |
CE Mark |
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Measurements |
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Model |
CW 801M |
CW 1251M |
CW 2501M |
CW 801P |
CW 1251P |
CW 2501P |
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Power |
800 VA |
1250 VA |
2500 VA |
90 – 264 VAC |
1250 VA |
2500 VA |
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Voltage |
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Range |
0 to 270 Vrms |
0 to 270 Vrms, 0 to 310VRMS (option) |
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Accuracy² (VAC >5V) |
± 1% of full range |
±0.1% of range <100 Hz, ± 0.2% of range>100 Hz, |
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Resolution |
0.1 Vrms |
0.1 Vrms |
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Current³ |
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Range |
6.0 ARMS |
9.4 ARMS |
18.6 ARMS |
0 – 6.0 ARMS |
0 – 9.4 ARMS |
0-18.6 ARMS |
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Accuracy |
±2% of range for linear loads with current >0.2A, |
±0.5% of range for linear loads |
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Resolution |
0.1 ARMS |
0.01 ARMS |
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Current³ |
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Range |
– |
– |
– |
0 to 25 A |
0 to 35 A |
0 to 70 A |
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Accuracy |
– |
– |
– |
±1% of range |
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Resolution |
– |
– |
– |
0.1 A |
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Frequency |
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Range |
45 to 500 Hz |
45 to 500 Hz, 45 to 1000 Hz (option) |
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Accuracy |
±0.5% typical |
±0.02% max |
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Resolution of display |
0.1 Hz |
0.1 Hz |
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Measurements |
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Model |
CW 801MCW 1251M |
CW 2501MCW 801P |
CW 1251 PCW 2501 P |
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Power |
800 VA |
1250 VA |
2500 VA |
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Power³ |
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Range |
0 – 800 W |
0 – 1250 W |
0 – 2500 W |
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Accuracy |
±2% of range for linear loads |
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Resolution |
1 W |
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Apparent Power³ |
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Range |
0 to 800 VA |
0 to 1250 VA |
0 to 2500 VA |
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Accuracy |
±2% of range for linear loads |
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Resolution |
1 VA |
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Power Factor³ |
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Range |
0 to 1 |
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Accuracy |
±4% of range for linear loads |
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Resolution |
0.01 |
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Crest Factor |
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Range |
0 to 3.5 |
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Accuracy |
±5% of range |
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Resolution |
0.01 |
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Phase |
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Range |
-359 to +359 degrees. Positive indicates time lag from reference |
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Accuracy |
Within 100 microseconds of equivalent angle |
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Resolution |
1 degree |
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Note:
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1* Over 8 hours at constant line, load and temperature after 15-minute warm-up typical |
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2* Typical values measured at point of sense |
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3* In a parallel system (for programmable units only), the current/power displayed on the master unit is the sum of all units in the system |
