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CA Instruments 3091LD AC eLoad

Manufacturer part number: 3091
3000–12000 VA
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The 3091LD is designed to provide precisely controlled, non-linear loads for testing AC power generation equipment such as UPS’s and AC sources. In addition, any active or passive current-carrying devices such as switches, circuit breakers, fuses, connectors, and power semiconductors can be tested. Traditionally, many of these products are tested using resistive load banks. This approach does not simulate real-world conditions such as switching DC/AC converters found in many AC powered products. This type of conventional testing does not fully exercise the equipment under test (EUT) under worst-case operating conditions. High peak currents and low power factor loads can significantly impact the operating characteristics of a UPS or AC power product. The 3091LD AC Load can simulate high crest factor and variable power factor load conditions. This provides an effective method of testing AC products against real-world conditions and can significantly increase product reliability. Unless properly exercised, product defects may go undetected until a unit is used at a customer site, resulting in costly field returns.

Ratings
Power3000 W @ 0-37° C; 2400 W @ 38-50° C
Current30 ARMS
Voltage50 to 350 VRMS
Frequency45 to 440 Hz
Max. Peak Power13 kW (up to 20% duty cycle)
Max. Peak/Surge Current90 APEAK Surge: 300 APEAK for 50 ms
Max. Peak Voltage500 VPEAK
Operating Modes
Constant CurrentRange: 0 to 30 ARMS; Accuracy: 0.2 % of full scale; Resolution: 0.05 % of full scale; Min. Set Current: Voltage / Maximum Set Resistance
Constant VoltageRange: 50 to 350 VRMS; Accuracy: 0.2 % of full scale; Resolution: 0.05 % of full scale
Constant ResistanceRange: 2.5 to 100 Ohms, 100 to 1000 Ohms; Accuracy: 1% FS, 5% FS; Resolution: 0.05 % FS; Max. Set Resistance: 1 / (Freq.*1.3e-5)
Constant PowerRange: 3000 W @ 0-37° C,2400 W @ 38-50° C; Accuracy: 0.5% of full scale; Resolution: 0.1% of full scale
Crest FactorRange: 1.4142 to 4.0, limited to 90 Apeak; Accuracy: 1 % of full scale; Resolution: 0.1 % of full scale
Power FactorRange: 0 to 1 lead or lag limited by Crest factor settings; Accuracy: 1 % of full scale; Resolution: 0.1 % of full scale
Short Circuit ModeMax. Surge current: 300 APEAK, up to 50 msec; Max. Cont. current: 30 ARMS; Max. Voltage drop: 2.5 VRMS
Measurements
FrequencyRange: 45 to 440 Hz; Accuracy: 0.1% FS; Resolution: 0.05% FS
VoltageRange: 50 to 350 VRMS; Accuracy: 0.1% FS; Resolution: 0.05% FS
Peak VoltageRange: 50 to 500 V; Accuracy: 0.5% FS; Resolution: 0.1% FS
CurrentRange: 0 to 30 ARMS; Accuracy: 0.2% FS; Resolution: 0.1% FS
Peak CurrentRange: 0 to 90A; Accuracy: 0.5% FS; Resolution: 0.1% FS
Crest FactorRange: 1,4142 to 4.0; Accuracy: 0.5% FS; Resolution: 0.1% FS
Apparent PowerRange: 0 to 3000 VA; Accuracy: 0.5% FS; Resolution: 0.1% FS
True PowerRange:0 to 3000 W; Accuracy: 0.5% FS; Resolution: 0.1% FS
Peak PowerRange: 0 to 45,000 W; Accuracy: 1% FS; Resolution: 0.1% FS
Reactive PowerRange: 0 to 3000 VA; Accuracy: 0.5% FS; Resolution: 0.1% FS
Power FactorRange: 0 to 1; Accuracy: 0.5% FS; Resolution: 0.1% FS
Resistance: Range2.5 to 100 Ohms,100 to 1000 Ohms; Accuracy: 1% FS, 5% FS; Resolution: 0.05%
FS Protection Over
Description

The 3091LD is designed to provide precisely controlled, non-linear loads for testing AC power generation equipment such as UPS’s and AC sources. In addition, any active or passive current-carrying devices such as switches, circuit breakers, fuses, connectors, and power semiconductors can be tested. Traditionally, many of these products are tested using resistive load banks. This approach does not simulate real-world conditions such as switching DC/AC converters found in many AC powered products. This type of conventional testing does not fully exercise the equipment under test (EUT) under worst-case operating conditions. High peak currents and low power factor loads can significantly impact the operating characteristics of a UPS or AC power product. The 3091LD AC Load can simulate high crest factor and variable power factor load conditions. This provides an effective method of testing AC products against real-world conditions and can significantly increase product reliability. Unless properly exercised, product defects may go undetected until a unit is used at a customer site, resulting in costly field returns.

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