Summit Technology's model 15KVP voltage probes are capable of connecting directly to 15 kilovolts. Traditionally, professionals who wished to measure 12,500 volt lines needed to locate a PT (potential transformer) and then connect to the low voltage output secondary of the PT. The 15KVP allows direct connection to the primary voltage. Bypassing the PT avoids any phase shift and linearity problems introduced by it. It also allows direct connection at any point of interest whether PTs already exist or not. The probes are used exclusively with the PowerSight® line of Energy Analyzers, manufactured by Summit Technology Inc.

Each 15KVP is 16 inches long and 1.5 inches in diameter. They connect to high voltage lines via an open hook that is 1.3 inches in diameter. The hook is screwed into the end of the probe. It can be replaced with other custom attachments. The bottom of the 15KVP has a recessed threaded coarse 5/8” hole for mounting to a hot stick.The 15KVP is lifted into position via a hot stick. Hot sticks are available as an accessory, STKS.

A typical installation includes three 15KVPs (one for each phase) and one PowerSight® energy analyzer. Each 15KVP is connected to the analyzer via safety banana jacks. Each is also always securely grounded via a hefty ground lead. Each lead is labeled to advise how to use it.

The output is linear to within ±2% for voltages between 2400 and 15000 Vrms. The ability to measure harmonics declines 1 db from 50 to 900 Hz (11% attenuation at 15th harmonic of 60 Hz or 18th harmonic of 50 Hz).