EL4900-series regenerative electronic loads
- Technology
- DC electronic loads
- Partner
- Keysight
Power Without Compromise
The Keysight EL4900 series are compact, regenerative DC electronic loads for midrange applications. Available in 1U and 2U sizes, they return absorbed energy to the grid, cutting power use and cooling costs. Their space-efficient design lowers energy costs, saves floor space, and speeds integration—while delivering reliable performance and flexible features in one solution. Paired with PathWave advanced Power Suite, the EL4900 adds fast automation, deeper insights, and efficient validation of complex power devices—without compromise.
Up to 6 kW in 1U models available from 2 kW to 12 kW, parallelable up to 192 kW. Sink power efficiently with up to 95% returned to the grid.
Range features
A high level overview of what this range offers
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Deliver a complete regenerative load for versatile testing needs.
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Provide voltage options of 80 V, 500 V, and 800 V, with current sinking up to 240 A for broad application coverage.
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Up to 6 kW in 1U models available from 2 kW to 12 kW, parallelable up to 192 kW. Sink power efficiently with up to 95% returned to the grid. Maximize rack efficiency with industry-leading compact 1U or 2U designs.
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Save valuable rack space with stackable parallel connections, up to 16 units.
What’s in this range?
All the variants in the range and a comparison of what they offer
| Parameter | EL4913A | EL4915A | EL4916A | EL4923A | EL4925A | EL4926A | EL4933A | EL4935A | EL4936A | EL4943A | EL4945A | EL4946A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Power class | 2 kW | 2 kW | 2 kW | 4 kW | 4 kW | 4 kW | 6 kW | 6 kW | 6 kW | 12 kW | 12 kW | 12 kW |
Voltage rating | 80 V | 500 V | 800 V | 80 V | 500 V | 800 V | 80 V | 500 V | 800 V | 80 V | 500 V | 800 V |
Current rating | 40 A | 12 A | 8 A | 80 A | 24 A | 16 A | 120 A | 36 A | 24 A | 240 A | 72 A | 48 A |
Power rating | 2 kW | 2 kW | 2 kW | 4 kW | 4 kW | 4 kW | 6 kW | 6 kW | 6 kW | 12 kW | 12 kW | 12 kW |
Programming accuracy – Voltage | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV |
Programming accuracy – Current | 0.1% + 40 mA | 0.1% + 12 mA | 0.1% + 8 mA | 0.1% + 80 mA | 0.1% + 24 mA | 0.1% + 16 mA | 0.1% + 120 mA | 0.1% + 36 mA | 0.1% + 24 mA | 0.1% + 240 mA | 0.1% + 72 mA | 0.1% + 48 mA |
Programming accuracy – Resistance | 3 mΩ | 10 mΩ | 10 mΩ | 3 mΩ | 10 mΩ | 10 mΩ | 3 mΩ | 10 mΩ | 10 mΩ | 3 mΩ | 10 mΩ | 10 mΩ |
Programming accuracy – Power | 0.5% + 10 W | 0.5% + 10 W | 0.5% + 10 W | 0.5% + 20 W | 0.5% + 20 W | 0.5% + 20 W | 0.5% + 30 W | 0.5% + 30 W | 0.5% + 30 W | 0.5% + 60 W | 0.5% + 60 W | 0.5% + 60 W |
Readback accuracy – Voltage | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV | 0.03% + 24 mV | 0.03% + 150 mV | 0.03% + 240 mV |
Readback accuracy – Current | 0.1% + 60 mA | 0.1% + 12 mA | 0.1% + 8 mA | 0.1% + 120 mA | 0.1% + 24 mA | 0.1% + 16 mA | 0.1% + 200 mA | 0.1% + 36 mA | 0.1% + 24 mA | 0.1% + 380 mA | 0.1% + 72 mA | 0.1% + 48 mA |
Readback accuracy – Power | 0.5% + 10 W | 0.5% + 10 W | 0.5% + 10 W | 0.5% + 20 W | 0.5% + 20 W | 0.5% + 20 W | 0.5% + 30 W | 0.5% + 30 W | 0.5% + 30 W | 0.5% + 60 W | 0.5% + 60 W | 0.5% + 60 W |
Load regulation – Voltage | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV |
Load regulation – Current | ≤ 40 mA | ≤ 12 mA | ≤ 8 mA | ≤ 80 mA | ≤ 24 mA | ≤ 16 mA | ≤ 120 mA | ≤ 36 mA | ≤ 32 mA | ≤ 240 mA | ≤ 72 mA | ≤ 64 mA |
CV range | 0 to 80 V | 0 to 500 V | 0 to 800 V | 0 to 80 V | 0 to 500 V | 0 to 800 V | 0 to 80 V | 0 to 500 V | 0 to 800 V | 0 to 80 V | 0 to 500 V | 0 to 800 V |
CV resolution | 1 mV | 10 mV | 10 mV | 1 mV | 10 mV | 10 mV | 1 mV | 10 mV | 10 mV | 1 mV | 10 mV | 10 mV |
CV tempco | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C | ≤ 30 ppm/°C |
CC range | 0 to 40 A | 0 to 12 A | 0 to 8 A | 0 to 80 A | 0 to 24 A | 0 to 16 A | 0 to 120 A | 0 to 36 A | 0 to 24 A | 0 to 240 A | 0 to 72 A | 0 to 48 A |
CC resolution | 10 mA | 1 mA | 1 mA | 10 mA | 1 mA | 1 mA | 10 mA | 1 mA | 1 mA | 10 mA | 10 mA | 10 mA |
CC tempco | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C | ≤ 50 ppm/°C |
CR load resistance range | 0.03 to 2,400 Ω | 0.3 to 15,000 Ω | 0.45 to 22,500 Ω | 0.015 to 1,200 Ω | 0.15 to 7,500 Ω | 0.22 to 11,250 Ω | 0.01 to 800 Ω | 0.1 to 5,000 Ω | 0.15 to 7,500 Ω | 0.005 to 400 Ω | 0.05 to 2,500 Ω | 0.08 to 3,750 Ω |
CR resolution | 1 mΩ | 10 mΩ | 10 mΩ | 1 mΩ | 10 mΩ | 10 mΩ | 1 mΩ | 10 mΩ | 10 mΩ | 1 mΩ | 10 mΩ | 10 mΩ |
CP range | 0 to 2 kW | 0 to 2 kW | 0 to 2 kW | 0 to 4 kW | 0 to 4 kW | 0 to 4 kW | 0 to 6 kW | 0 to 6 kW | 0 to 6 kW | 0 to 12 kW | 0 to 12 kW | 0 to 12 kW |
CP resolution | 1 W | 1 W | 1 W | 1 W | 1 W | 1 W | 1 W | 1 W | 1 W | 1 W | 1 W | 1 W |
Maximum slew rate (rise/fall slope) | 10 A/ms | 3 kA/s | 2 kA/s | 20 A/ms | 6 kA/s | 4 kA/s | 30 A/ms | 9 kA/s | 6 kA/s | 60 A/ms | 18 kA/s | 12 kA/s |
Line regulation – Voltage | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV | ≤ 16 mV | ≤ 100 mV | ≤ 160 mV |
Line regulation – Current | ≤ 24 mA | ≤ 7.2 mA | ≤ 4.8 mA | ≤ 48 mA | ≤ 14.4 mA | ≤ 9.6 mA | ≤ 72 mA | ≤ 28.8 mA | ≤ 14.4 mA | ≤ 144 mA | ≤ 57.6 mA | ≤ 28.8 mA |
Protection – Overvoltage | 82 V | 530 V | 835 V | 82 V | 530 V | 835 V | 82 V | 530 V | 835 V | 82 V | 530 V | 835 V |
Protection – Overcurrent | 42 A | 12.5 A | 8.4 A | 84 A | 25 A | 16.8 A | 26 A | 37 A | 25.2 A | 252 A | 75 A | 50.4 A |
Protection – Overpower | 2,040 W | 2,040 W | 2,040 W | 4,080 W | 4,080 W | 4,080 W | 6,120 W | 6,120 W | 6,120 W | 12,240 W | 12,240 W | 12,240 W |
