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Generator Test Set
TUV Certified, 15KW, 120/240VAC, 50-70 Hertz Load Bank
Model 635
A TUV Certified, Self-Contained Load Bank for Electrical Load Testing of AC Generator
What is a load bank?
A Generator Test Set, also known as a generator tester, a load bank or a dummy load, provides a fully controllable load that mimics the real load that the generator would see in normal operation. Its use allows the performance of both the engine and generator to be evaluated. It is also useful for restoring the full capacity to diesel powered generators by burning off the fuel deposits that have collected while operating under light loads. A third use is that of a UPS tester.

Now you can be sure that your generators and alternators are providing the output they should, and at the proper voltage and frequency. Generators up to 15KW can be loaded to full capacity. The generator test set combines two load banks in one, providing a 0-130A (0-15,600 watt) load at 120V, or 0-65A (0-15,600 watt) load at 240V. Larger generators can be tested using two test sets. This avoids purchasing a very large test set for only a small percentage of your generator inventory. 

The model 635 is similar to the model 632 but is designed to operate at a much lower cabinet temperature thus meeting all the applicable requirements of UL and CSA.

The Generator Test Set is comparable with those offered by other companies but at a much lower cost!

PRICE:   $2,175.00

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An Easy to Use Product at a Practical Price!
Fast and Easy
The test set is fully self-contained requiring only the adapters listed to mate with your generator.
Voltage Limits Identified
The proper voltage limits for both 120V and 240V generators are identified on the voltmeter face.

Continuous Load Controls

0-5A, 5A, 10A, 10A, 15A, 20A load controls are provided.

Ammeter Controls
Dual ranges of 0-10 and 0-100 amps.
Volt Meter Controls
Switchable between 125V and 250V input.
Direct Reading Frequency Meter
Frequency Meter: 50 - 70 Hz on an analog display for ease of viewing.

Self-Contained Cooling System
A self-contained fan allows the test set to operate on a continuous basis.

Built, Sold and Serviced in the U.S.
For over four decades Sotcher Measurement, Inc. has provided latest state-of-the-art electrical test equipment that is easy to use and maintain. Our customers rely on our products to verify the safety of the electrical devices they rent, use or manufacture. We feel this commitment very deeply. In response, we do our utmost to insure that the products we offer are of the highest quality and performance, consistent with good value.

We continue to design, manufacture and service all of our products in the United States. We are proud to be able to offer our customers fine American products that are easy to use at a practical price.

Control Input:       
120V, 60Hz
Load Input:  120/240V, 50-70Hz, single phase
Circuit breaker protection provided on each section
Load Capacity:     
0-15,600 Watts
Duty Cycle:            
30 minutes fully loaded
Power Factor:        
  • Frequency Meter:
+/-3% Center
  • Volt Meter: +/-3% FS. 
  • Ammeter: +/-5% FS. 
Input Plug:      
125/250V, 50A, 3 pole, 4 wire (type CS6375)
Approximately 48 pounds
24 inches high, 12 inches wide, 16 inches deep

The following adapters allow you to mate the test set with receptacles commonly found on portable generators. Most of the adapters connect to the test set through the master adapter (40608). This saves you the cost of larger 50 amp connector on every adapter. A good selection for most applications would include the 40608, 40611, 40612 and 40613.

40601: Adapter, 125/250V, 50A, with Clips
40608: Adapter, Master, 125/250V, 30A, Locking
40609: Adapter, 125/250V, 20A, Locking, mates with 40608
40610: Adapter, 125V, 30A, Locking, mates with 40608
40611: Adapter, 125V, 20A, Locking, mates with 40608
40612: Adapter, 125V, 15A, Non-Locking, mates with 40608
40613: Adapter, 250V, 20A, Locking, mates with 40608
40614: Adapter, 125/250V, 50A, Locking
40616: Adapter, 125/250V, 50A, with Lugs
40617: Adapter, 250V, 20A, Locking
40619: Adapter, 125/250V, 50A, 3 Phase, Locking (two test sets)
40690: Digital Volt Meter 
40692: Digital Frequency Meter 
40693: Digital Ammeter (two required per test set) 
$370 each

Model 635 15KW TUV Certified Generator Test Set
• User's Manual
• One Year Parts and Labor Warranty



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"I sent in my unit for expedited service and before I was able to cut the purchase order, I had the machine back. Your company is awesome! What great service
Robert Lopez
Proctor and Gamble 



Nationally Recognized Sotcher Measurement Inc. test equipment is in common use throughout the United States by major manufactures of power tools and appliances.