Load Banks

ASCO SIGMA Load Bank Control

SIGMA is a multi-functional embedded load control system specifically designed for ASCO Avtron and ASCO Froment load banks. Flexible, Feature Rich and Cost Effective it is best-in-class providing a solution for any application.

Best Suited For
  • Construction and Engineering
  • Data Center/Colocation/Hosting
  • Manufacturing
  • Military, Defense, Aerospace and Missile
  • Marine
  • Oil and Gas
  • Power Generation
  • Power/Gas Transmission and Distribution
Parts and labour are covered by Froment's standard 12 month warranty as described in the terms and conditions of sales.
How to buy


*To see model-specific downloads, you will need to go to the model-specific product page by selecting the model name in the specifications chart above.


SIGMA is available in two platforms: SIGMA LT and SIGMA 2.
SIGMA LT is a cost effective load bank control system specifically designed for lower capacity resistive load banks giving best in class control flexibility and utilisation.
SIGMA LT control types: digital toggle switches, hand-held.
SIGMA 2 has increased control and functionality with enhanced test features, instrumentation and user benefits.
SIGMA 2 control types: Decade switches, Intelligent hand-held terminal (IHT), PC basic, PC software, site load correction, mod bus communication protocol.


Fast and accurate testing with maximum efficiency. SIGMA provides cost effective data acquisition, is accurate, automated and easy to use.
No-need for any pre calculations.
Multiple load banks of different capacities and combinations can be connected and controlled in one place.
Automatic load control provides up to 16 timed load steps including manual override and cyclic testing.

Services & Support


Frequently Asked Questions
Which Sigma control type do I need?
The type of Sigma control you need depends on the application and what you want to achieve. Contact a member of our sales team to find which type is right for you.
Do you offer Sigma control training?
Yes, we can come to a location of your choice for control training. Contact us to arrange a date of your choosing.
How many load banks can be linked together?
Sigma 2 load banks can have 14 load banks linked together and Sigma LT can I have 25 load banks linked together.
What is the difference between Sigma 2 and Sigma LT controls?
Sigma LT controls are only available on selected 2000 and 3000 series load banks offering cost effective, purely resistive load tests. Sigma 2 is available on all Froment load banks is the most comprehensive load control available.
Can the load banks be controlled by any other methods?
Our load banks are able to be configured to be controlled by certain systems. For more information please contact out sales team.


Sales In USA Change Location
Avtron Load Banks
Email Contact +1 216 573 7600 Fax +1 216 573 5953
6255 Halle Drive Cleveland Ohio 44125 USA
Product areas of focus: Load Banks
Support Change Location
Avtron Load Banks
Email Contact +1 216 573 7600 Fax +1 216 573 5953
6255 Halle Drive Cleveland Ohio 44125 USA
Product areas of focus: Load Banks


DCIM & IT Management

Remembering the IT Department Before Rolling out IT

Those who run IT departments have what I like to call ‘the burden of knowledge’. They know what can go wrong and how wrong it can go, so they also know how important it is to put the right safeguards in place to prevent that from happenin...

May 30, 2017
Availability & Uptime

Preventive Maintenance Services

November 25, 2016

Load Bank Testing to Ensure Generator Set Performance

With emergency generator sets becoming more mandated and commonplace, proper load bank testing becomes much more important. Selecting the proper type of load bank, be it either 100% resistive or combined resistive and inductive is critica...

April 01, 2017