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Programmable Power Supplies

Preen ADG-L Series

Programmable DC Power Supply, 5kW to 75kW, 3U Chassis

Not every DC power test application needs 1800kW of scalable output — many lab and production-line requirements sit comfortably in the 5kW to 75kW range, where a compact, cost-effective platform matters more than extreme power headroom. Preen's ADG-L series covers this range specifically, with 5kW, 10kW, and 15kW single-unit power levels all housed in a compact 3U chassis rather than the larger enclosures higher-power DC supplies typically require.

Output voltage flexibility comes from two connection modes: series connection of up to 2 units extends output voltage up to 2000V (from a 0-1000V standalone maximum), while parallel connection of up to 5 units extends total power to 75kW. Three-times auto range models add a further option, trading lower maximum voltage for proportionally higher current from a single chassis — useful where a test programme's actual voltage requirement is modest but current demand is high.

Active power factor correction (PFC) raises input power factor up to 0.99, reducing reactive power draw from the mains supply — a meaningful consideration where multiple units are installed on a shared facility power feed, since poor power factor across many instruments compounds into real facility-level power quality and capacity issues. A 5-inch touch screen with a rotary knob provides direct manual control, alongside remote sensing for accurate regulation at the load and screen lock password protection to prevent accidental setting changes during unattended operation.

Preen ADG-L Series compact programmable DC power supply
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ADG-L Series
Available as a Containerized / IP54 Option
Like Preen's BPS shore power series, the ADG-L Series can be built into a customized outdoor container or upgraded to an IP54-rated enclosure as an optional configuration — useful for ports, construction sites, remote installations, and other high humidity, heat, dust, or corrosion-exposed environments. Standard indoor chassis remain the default; contact Finch to configure a containerized or IP54 version for your application.
Preen ADG-L Series

ADG-L Series — 5kW Tier

5kW single-unit output across 8 models, 0-30V to 0-335V. Auto Range models trade lower voltage ceiling for higher current from the same chassis.
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Technical Specifications

Output Power Range5kW, 10kW and 15kW single-unit models (31 total), expandable to 75kW via parallel connection (max. 5 units)
Output Voltage Range0–30V up to 0–1000V per model; up to 0–2000V via series connection (max. 2 units)
Output CurrentUp to 2550A via parallel connection
Output ModeCV / CC / CP
Line Regulation≤ 0.03%–0.1% F.S. depending on model
Load Regulation≤ 0.1%–0.3% F.S. depending on model
Voltage Ripple (RMS)≤ 0.05%–0.3% F.S. depending on model
Transient Response≤ 5ms
Power Factor≥ 0.99 at max. power (active PFC)
Efficiency≥ 87–90% at max. power depending on model
ProtectionsOVP, OCP, OPP, OTP, Vin OV, Vin Unbalance, LDC OV (plus Remote Error & FAN Error on select models)
Remote Sensing≤ 5V compensation
Remote InterfacesStandard: RS-232, RS-485, Ethernet, USB, Analog · Optional: GPIB
HMI5'' touch screen with rotary knob; adjustable voltage resolution (0.1V/1V)
Standout FeaturesAuto Range function (higher current at lower voltage, or vice versa), master/slave parallel & series connection, screen lock password, optional Reverse Current Protection Module
Chassis15kW in 3U; 30kW (parallel) in 6U
Operating Temperature0°C to 40°C
Storage Temperature-20°C to 70°C
ModelPowerVoltageCurrent 
ADG-L-30-1705kW30V170AEnquire
ADG-L-40-1255kW40V125AEnquire
ADG-L-80-625kW80V62.5AEnquire
ADG-L-80-170-55kW80V170A (Auto Range)Enquire
ADG-L-115-455kW115V45AEnquire
ADG-L-160-325kW160V32AEnquire
ADG-L-335-155kW335V15AEnquire
ADG-L-335-45-55kW335V45A (Auto Range)Enquire
Preen ADG-L Series

ADG-L Series — 10kW Tier

10kW single-unit output across 11 models, 0-30V to 0-670V, the widest model spread in the ADG-L range.
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ModelPowerVoltageCurrent 
ADG-L-30-34010kW30V340AEnquire
ADG-L-40-25010kW40V250AEnquire
ADG-L-80-12510kW80V125AEnquire
ADG-L-80-340-1010kW80V340A (Auto Range)Enquire
ADG-L-115-9010kW115V90AEnquire
ADG-L-160-6310kW160V63AEnquire
ADG-L-335-3010kW335V30AEnquire
ADG-L-335-90-1010kW335V90A (Auto Range)Enquire
ADG-L-500-2010kW500V20AEnquire
ADG-L-670-1510kW670V15AEnquire
ADG-L-670-45-1010kW670V45A (Auto Range)Enquire
Preen ADG-L Series

ADG-L Series — 15kW Tier

15kW single-unit output across 12 models, 0-30V to 0-1000V — the highest-power ADG-L tier, expandable to 75kW via 5-unit parallel connection.
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ModelPowerVoltageCurrent 
ADG-L-30-51015kW30V510AEnquire
ADG-L-40-37515kW40V375AEnquire
ADG-L-80-18715kW80V187.5AEnquire
ADG-L-80-510-1515kW80V510A (Auto Range)Enquire
ADG-L-115-13515kW115V135AEnquire
ADG-L-160-9415kW160V94AEnquire
ADG-L-335-4515kW335V45AEnquire
ADG-L-335-135-1515kW335V135A (Auto Range)Enquire
ADG-L-500-3015kW500V30AEnquire
ADG-L-670-2315kW670V23AEnquire
ADG-L-1000-1515kW1000V15AEnquire
ADG-L-1000-45-1515kW1000V45A (Auto Range)Enquire

Frequently Asked Questions

When should I choose the ADG-L series over the higher-power ADG+ series?
The ADG-L series suits applications with power requirements up to 75kW where chassis compactness and cost efficiency matter more than extreme scalability. The ADG+ series is the right choice where a programme needs power beyond 75kW, or specifically needs the ADG+'s built-in solar array simulation function, which the ADG-L doesn't include.
What's the difference between series and parallel connection on this series?
Series connection (up to 2 units) increases the maximum available output voltage, useful where a test requires higher voltage than a single unit provides. Parallel connection (up to 5 units) increases total available current and power at the same voltage, useful where the requirement is more power at a voltage a single unit already covers.
What does a "3-times auto range" model actually provide?
These models automatically extend the current output range at the expense of maximum voltage, effectively trading voltage headroom for current headroom within the same physical unit — useful where a test programme's actual requirement is high current at comparatively low voltage, a combination the standard voltage/current tables don't cover as efficiently.
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