50 KVA Transformer Power Distribution - 480V 3P to 240/120

This unit is Made In China

The100A-50KVA-8X120.20A-2X240.60A portable power distribution system is designed to enable operators to connect to 480V three phase primary voltage and step it down to 240/120V single phase to operate lights and equipment. On the primary size, operators can connect up to four 100-amp, 480V devices. On the secondary side, operators can connect up to eight 120V, 20-amp devices and two 60-amp, 220V devices. This versatile system enables operators to make the most of a single 480V, 3-phase connection via 25` line-in cord.

 

Operation:

The 25` 4/3 SOOW line-in cord brings 480V three phase power to the 600-amp, 480V, 3-phase primary panel, which contains four 100-amp breakers protecting four 100-amp, 480V, 4100R7W pin and sleeve receptacles and one 125-amp breaker protecting the 50 KVA transformer. The NEMA 3R 50 KVA transformer converts 480V three phase power to 240/120V and passes the current to the secondary disconnect and panel. The secondary side of the transformer feeds a NEMA 3R 225-amp main breaker panel. This secondary panel contains eight 20-amp, 120V breakers protecting eight 120V, 20-amp, 5-20R duplex receptacles and two 60-amp, 220V breaker protecting two 60-amp, 360R6W receptacles. All receptacles are equipped with weatherproof covers.

 

Protective Construction

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 which allows easy lifting with cable or chain hooks. This can be replaced for an additional cost with stainless steel, hot dip galvanized steel, or aluminum depending on the customer's needs. Larger units are available upon request and can be equipped with skids or trailer mounted.

 

PARAMETERS

Line-In Cord: 25` 4/3 SOOW

Primary Voltage: 480V 3P

Primary Panel: 480V 3P N3R 600A

Primary Breakers: (4) 100A (480V RCPT), (1) 125A (XFMR) (1) 600A (Main)

Primary Outlets: (4) 100A 4100R7W All w/ Weatherproof covers

Transformer: 50KVA 480V-3P to 240/120V-1P N3R

Secondary Panel: 240/120V 1P N3R 225A

Secondary Breakers: (2) 60A (240V RCPT) & (8) 20A (120V RCPT)

Secondary Panel Outlets: (2) 360R6W (220V) & (8) 5-20R (120V) - All w/ Weatherproof covers

Form Factor: Square tube frame w/ skid pockets, top pick eye & locking 8" casters

Dimensions: 34"-L X 40"-W X 58"-H

Weight: 550lbs

Features:

Max Primary OCP: 600A @ 480V 3P

Max Secondary OCP: 225A @ 240V 1P

 

Grounding: Transformer is grounded to the frame and we provide a grounding lug on the frame for the earth ground.
~Please check all motor loads for dual rated motors that will work 208 or 240.~

 

Applications: This power distribution system 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.

 

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How many kW can a 50 kVA transformer handle?

45 kW

Transformer 50kVA is the capacity of the transformer, the power factor of the general transformer is about 0.85, active power is about 45 kW, can take up about 45 kW electrical appliances.

 

What's the primary line current for a fully loaded 45 kVA 480V to 120 240V three phase transformer?

The primary line current for a fully loaded 45 kVA, 480V to 120/240V, three-phase transformer is approximately 54.3 amps. This is calculated using the formula for three-phase line current. By substituting the transformer's specifications, we find the current to be around 54.3 amps.