Positron 3782091C/50, User Manual

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Overview
7
2.0 Introduction to the Composite Insulator Testers
2.1 Personnel Terminology Used in this Guide
The Composite Insulator Tester is used by the High-voltage Tower Workers/Technicians. In this
guide, the High-voltage Tower Worker/Technician who uses the tester to scan the composite
insulator is referred to as the “Probe Operator”.
The Foreman or other members of the supporting Ground Crew operate the Tablet/Laptop used
in the field. In this guide they are referred to as the “Tablet Operator”.
2.2 General
The document describes the operation of Positron’s Composite Insulator Tester, enabling
GO/NOGO decision-making for live-line testing of High Voltage Insulator performance:
Model # 3782091C/50: Composite Insulator Tester, 50Hz
Model # 3782091C/60: Composite Insulator Tester, 60Hz
Refer to Figure 1 for a detailed drawing of the unit.
With the Composite Insulator Tester field Probe mounted onto a user-supplied hot-stick, the
Probe Operator passes the Insulator Tester along the length of the composite insulator. Any
conductive defect in an insulator will cause a change in the electric field surrounding the insulator.
This perturbation of the electric field indicates a faulty insulator. The fault is detected and
identified by the Probe, and the data is downloaded to a database installed on the Tablet/PC for
analysis. The graph displaying the E-Field of the insulator is clearly displayed on the Tablet/Laptop
while in the field enabling GO/NOGO decision-making on-the-spot.
The skirts, or sheds, of Polymeric or Composite insulators are counted by the field Probe’s two
integrated infrared detectors, referred to as IR1 and IR2 (see Figure 1), and the electric field of
each insulator is recorded. Defective insulators are easily identified using the resulting data graphs
that present the contour of the electric field along the length of the composite insulator. The field
Probe contains a microprocessor-based recording system.
After a Composite insulator is scanned by the Probe Operator, the Tablet Operator downloads the
Probe’s data via a long range Bluetooth communication link to the Tablet/Laptop for immediate
GO/NOGO analysis.
The data is stored in ASCII format in order to be compatible with any text editor, including Excel
spreadsheet and Microsoft NOTEPAD, plus the ASCII data can be imported into existing customer
databases. A copy is also available in JSON format to simplify the upload to a server.

Verify the Date and Time settings of the Tablet/Laptop

It is important to disable the WIFI of the Tablet/Laptop to avoid long operating system
updates and interference with the long range Bluetooth communication link while preparing
for or performing a testing session.
N
OTE