ZTZ Is The Pioneer in Transformer Monitoring

A Miami-Based American Company Since 1998.
All ZTZ Products are Hand-Made in USA and Carry a Lifetime Warranty

ZTZ on-line transformer monitoring systems help utility asset managers by detecting electrical nuances which are known to be indicators of near-term failure.  Over 5000 ZTZ systems are in service world-wide.  Since ZTZ was founded in 1997, hundreds of transformer bushings with symptoms of failure have been detected and taken out of service before catastrophic failure occurred.  All ZTZ systems are hand-built in USA and carry a lifetime warranty.  ZTZ Services is a Veteran Owned Business.

ZTZ Services has pioneered the development of on-line transformer bushing monitoring since the 1970s.  Our transformer monitoring systems have been further developed and refined ever since.  ZTZ monitoring systems use exclusive algorithms and methods to determine bushing health with the highest confidence level using only one connection to the bushing C1 test tap.  All ZTZ monitoring systems carry a lifetime warranty.  We offer full turnkey installation services.

Accurate and Reliable

ZTZ Services takes pride in the extremely high quality of their products. Bushing sensors are hand-made from billet aluminum or stainless steel in the USA. Redundant voltage-limiting circuitry ensures safety to installers in the event open ground connection. ZTZ bushing monitors provide condition data of the bushings while they are operating at system voltage. The measured parameters correspond closely to those from traditional off-line tests.

Innovative Solutions

ZTZ Services has continued to innovate where competitors have become stagnant. In 2012, ZTZ originated a new bushing monitor test method which uses both high and low side bushings. This method helps to eliminate uncertainty from varying system voltages or ambient temperatures outside of the optimal range. In 2018, ZTZ was awarded US Patent 10,126,348 B2 for our new method of detecting GIC with our existing bushing sensors, saving the cost of many extra sensors that are required by competing systems.

American-Made and serviced

ZTZ Services is a Veteran-owned company. All products are hand-made in USA. ZTZ service and support is based in Miami, Florida. All ZTZ monitoring products are available with full turnkey installation, field installation engineers dispatched from the home office in Miami, Florida.

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