The Avtron K571 is a portable, air-cooled, resistive DC load bank designed for indoor use in testing DC power sources such as generating systems, converters, transformer-rectifier units, and battery systems. It is built with a robust aluminized steel enclosure for corrosion protection and features Helidyne™ resistive elements made from a corrosion-resistant chromium alloy, designed to operate at low temperatures to ensure extended, reliable performance without requiring a cool-down period after use. The unit is self-contained, incorporating a heavy-duty industrial blower for cooling the load resistor elements, with a special air switch to protect these elements against loss of cooling air.
**Technical Specifications**
* **Product Type:** Portable DC Resistive Load Bank
* **Intended Use:** Testing DC power sources (generating systems, converters, transformer-rectifier units, battery systems, controls)
* **Cooling:** Air-cooled via a self-contained 0.5 HP blower
* **Resistive Elements:** Helidyne™ resistive elements, made of corrosion-resistant chromium alloy
* **Operation:** Continuous duty cycle with no limitations
* **Operating Environment:** Designed for indoor operation
* **Ambient Temperature Range:** -20°F to 120°F (-28°C to 50°C)
**Electrical Specifications**
* **Input Power (Control & Blower):** 120 VAC, single phase, 60 Hz, supplied externally
* **Load Voltage Ratings:** Available in various DC voltage configurations, including 28 VDC and 52 VDC as common ratings
* Typical configurations include:
* 1000 Amps at 28 VDC
* 1000 Amps at 52 VDC
* 250 Amps at 270 VDC
* **Load Step Resolution:** Varies by model, common resolutions include 1A, 5A, 10A, 50A
* **Maximum Load Capacity:** Up to 1000 Amps
* **Control and Blower Power Source:** External 120 VAC, single phase, 60 Hz source
**Interfaces and Controls**
* **Load Control:**
* ON-OFF load control for each load step
* MASTER LOAD ON-OFF control for total load
* Local manual control with toggle switches
* **Monitoring:**
* Digital volt and ammeter available, mounted on the control panel for accurate measurements
* **Connections:** Easy access terminals located behind an access door on the front of the unit
* **Safety Features:**
* Safety interlock switch disables load application if the access door is opened
* Cooling air loss protection via a special air switch
* Over temperature protection standard on all models
* Door interlock circuit prevents operation if the main hinged door is not secured
* Air intake protected to prevent ingestion of objects larger than 0.50″ diameter
**Physical Characteristics**
* **Construction:** Rugged, heavy-duty construction with an aluminized steel enclosure for superior corrosion protection
* **Portability:** Equipped with four rubber casters: two rigid and two swivel with foot-operated locks for easy maneuverability
* **Cooling Air Flow:** Screened air intake and outlet openings
* **Dimensions:**
* Width: 23 inches (584.2 mm)
* Depth: 28 inches (711.2 mm)
* Height: 63 inches (1600.2 mm)
* **Weight:** Approximate weight varies by configuration. The K571 model is listed with dimensions indicating a substantial unit.
**Compatibility**
* **Power Sources:** Suitable for testing DC generating systems, converters, transformer-rectifier units, battery systems, and controls
* **Legacy Models:** The Avtron K571 has been succeeded by the ASCO Model 2400.
**Why Choose Aumictech for Avtron K571?**
At Aumictech, we specialize in supplying high-end DC load bank equipment. Whether you need robust testing solutions for your DC generating systems, reliable calibration equipment for your converters, or precise load banks for battery systems, our team ensures the Avtron K571 delivers maximum performance for your application.
