® EI-162BN Split-Core Transformer Users Manual PN 2842250 June 2007 © 2007 Fluke Corporation, All rights reserved. Printed in the Netherlands. All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days.
Table of Contents Title Introduction .......................................................................................... Unpacking............................................................................................. Packing ................................................................................................. Safety Regulations ................................................................................ Symbols ..................................................................
EI-162BN Users Manual ii
List of Tables Table 1. 2. Title Page Features and Functions ......................................................................... 5 Transformation Ratios ..........................................................................
EI-162BN Users Manual iv
List of Figures Figure 1. 2. 3. 4. Title Features................................................................................................. Installing Transformer Around Pylon ................................................... Transformation Ratio Connections ....................................................... Test Measurement Setup.......................................................................
EI-162BN Users Manual vi
EI-162BN Split-Core Transformer Introduction The Fluke EI-162BN Split-Core Transformer (hereafter referred to as the “Transformer”) is used with an earth ground tester (hereafter referred to as the “Tester”) to make selective earth ground resistance measurements (RE) on transmission line pylons. The Transformer is designed to work with Fluke 1625 and 1623 GEO Earth Ground Testers. This instrument is manufactured in compliance with quality assurance system DIN ISO 9001.
EI-162BN Users Manual Safety Regulations This device is only to be installed and operated by qualified personnel in compliance with the safety precautions and regulations that follow. Additionally, use of this device requires compliance with all legal and safety regulations pertaining to each specific application. Similar regulations apply to the use of accessories.
Split-Core Transformer Symbols • Assume that safe operation of the device is not possible if it shows visible damage. • Assume that safe operation of the device is not possible if it has been exposed to unfavorable conditions (for example, storage beyond the permissible climatic limits without adaption to the ambient climate and dewing).
EI-162BN Users Manual Accessories The following accessories are shipped with your Transformer: 4 • Two fasteners for holding Transformer halves together • One cable bobbin with two 12-meter (40-foot) test leads for connecting the Transformer to the Tester’s jack. The female red and blue leads then plug onto the male red and blue banana plugs on the sensing cable adapter used with the Fluke 1623 and 1625 for selective resistance measurements. (Sensing cable adapter, Fluke part number 2539195).
Split-Core Transformer Features Features See Figure 1 and Table 1 for Transformer features and functions. 1 3 A RM NO 1 621 0 805 A6 ! 0 100 500 200 2 evx01.eps Figure 1. Features Table 1.
EI-162BN Users Manual Using the Split-Core Transformer Installing Transformer around Pylon Footing To install the Transformer around a pylon footing: 1. Loosen (or if required, remove) the fasteners. See Figure 2. If extra leverage is needed to loosen a fastener, insert a lever (like a small screwdriver) into the 4 mm bore hole in the fastener. 2. On the end face with the slotted bolt hole, pivot the fastener/bolt out of the way, and then separate the two halves of the Transformer. See Figure 2. 3.
Split-Core Transformer Using the Split-Core Transformer evx02.eps Figure 2.
EI-162BN Users Manual Determining Transformation Ratio Connections Before you connect the Transformer to the Tester, you need to determine a suitable transformation ratio for the minimum measuring and maximum parasitic currents expected to flow through the transmission line pylon. The Transformer has 1000 windings, with connections at winding ratios of 1000, 500, 200 and 0 (⊥).
Split-Core Transformer Using the Split-Core Transformer 1 : 200 00 10 0 50 0 20 0 50 0 10 00 20 1 : 300 00 10 0 50 0 20 1 : 500 00 10 0 50 00 2 1 : 800 00 10 0 50 00 2 1 : 1000 00 10 0 50 00 2 evx03.eps Figure 3.
EI-162BN Users Manual Connecting Transformer to Earth Ground Tester W Caution Corrosion and paint on a pylon can impede the connection between the contact clamp and the pylon’s frame. When installing the contact clamp, ensure the tip of the clamp fastener penetrates all layers of paint and corrosion. 1. Install the contact clamp to the pylon and tighten the clamp fastener. The contact clamp can now be used as the connection point for the Tester’s earth ground electrode test lead. See Figure 4. 2.
Split-Core Transformer Using the Split-Core Transformer Parasitic Current Aux. Earth Electrode Probe FLUKE 1623 Earth/Ground Tester plus max 50 V FLUKE Measuring Current Red evx04.eps Figure 4.
EI-162BN Users Manual Maintenance Only trained and qualified staff should perform maintenance on this instrument. In all repair and reconditioning work, ensure the Transformer’s design parameters are not modified to the detriment of safety, that only authorized parts are used, and that parts are reassembled to their factory-issued configuration. Cleaning W Caution To prevent damage to the Transformer when cleaning: • Do not use strong cleaning detergents or solvents (like trichloroethylene).
Split-Core Transformer Specifications Specifications Note Fluke reserves the right to modify specifications without notice for the purpose of product improvement. General Temperature Range Working Temperature ......................................... -10 °C to +50 °C (+14 °F to +122 °F) Storage Temperature ......................................... -30 °C to +60 °C (-22 °F to +140 °F) Dimensions Outer diameter.................................................... 377 mm (15 in) Inner diameter................
EI-162BN Users Manual Service If your Transformer is operated and handled properly, it should not require servicing. However, if you suspect that the Transformer has failed, review this manual to ensure you are operating it correctly. If it still fails to operate properly, pack securely using the original packing material (if available) and forward, postage paid, to the nearest Fluke Service Center. Include a brief description of the problem. Fluke assumes no responsibility for damage in transit.
