20 Years Factory XJM7-J Measuring box (Infrastructure Energy Measurement Box) to Armenia Manufacturer


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With reliable quality process, good reputation and perfect customer service, the series of products produced by our company are exported to many countries and regions for 20 Years Factory XJM7-J Measuring box (Infrastructure Energy Measurement Box) to Armenia Manufacturer, Our aim is "blazing new ground, Passing Value", in the future, we sincerely invite you to grow up with us and make a bright future together!


XJM7-J metering box (infrastructure power metering box) is suitable in power supply system with AC 50HZ, rated voltage 380 / 220V , as the power measurement in construction site.


Meet GB7251.1-1997 and GB7251.3-1997 standards.

3C certificate:

XJM7-J Mgy Measurement Box)-2

How to read a compressor schematic to troubleshoot compressor issues on an HVAC unit. How to diagnose a compressor reading Ohms resistance and when all else fails, disconnect wiring on compressor.


Made in the USA

The Larson Electronics MGS-37.5KVA-20X120 heavy duty power transformer substation is designed for use for linear (motor) loads and converts 480 VAC single phase electrical current to single phase 120V AC. This unit provides operators the ability to safely tap into and distribute 480V AC power from a variety of sources including generators and direct grid power.

The MGS-37.5KVA-20X120 transformer provides a safe and effective way for operators in industrial settings to tap into and utilize power sources independently of the work area. This unit provides an effective power source for operators performing plant turnarounds, maintenance and cleaning in hazardous areas, equipment installations and repairs and any activities requiring an alternative to native power sources. This unit is designed to operate with 480 2P which it then steps down to 120V single phase. This transformer makes 120VAC available via 20 GFCI protected 120 volt receptacles (10 double gang), each protected by a dedicated circuit breaker.

20 feet of #4 Type-W cable connects line in power to a fusable breaker with ON/OFF disconnect switch which controls current to the 37.5 KVA, 480 Volt single phase transformer. The transformer is mounted to a 3/16” thick steel plate and the distribution assembly is mounted onto a rugged 2″ square carbon steel frame with four hard rubber casters and a top located lifting eyelet and skid pockets to allow easy transport.

Unlike many portable power distribution boxes made of plastic and utilizing thin gauge, low grade metals in their construction, this unit is designed for serious use and is ruggedly constructed to withstand demanding conditions and heavy duty industrial applications. The transformer and load assembly is mounted on a 3/16″ thick carbon steel mounting platform and the load center/distribution assembly is mounted to the standard 2″ x 2″ x 1/8″ square carbon steel tubing frame, resulting in an extremely stable, durable and well protected power distribution platform. This model is equipped with forklift skid pockets, locking polyurethane casters, and a top located lifting eyelet allows easy lifting with cable or chain hooks. This can be replaced with stainless steel, hot dip galvanized steel, or aluminum depending on the customer’s needs for an additional cost. Larger units are available upon request, and can be equipped with skids or trailer mounted.

This unit is configured for linear loads and as such is suited for use powering electric motors and industrial equipment. Features a NEMA 3R rating and is ideal for indoor or outdoor use and applications including but not limited to, construction sites, plant maintenance, plant turnarounds, shows, exhibits, and shipyard operations. These power distribution systems are popularly used in applications where external power sources are often necessary. We also offer class rated transformers for use within explosion proof and hazardous location environments.

Larson Electronics’ Larson Electronics is a manufacturer and as such can build portable transformer systems to your specifications. Although we carry several models of power distribution transformers, we can deliver custom ordered units almost as quickly as our prebuilt units If this model does not meet your needs, please contact us at 1-800-369-6671 or sales@larsonelectronics.com to discuss your specific requirements.


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