Fluke EI-162BN User manual

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.

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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. This warranty
extends only to the original buyer or end-user customer of a Fluke authorized reseller,
and does not apply to fuses, disposable batteries, or to any pro duct which, in Fluke's
opinion, has been misused, altered, neglected, contaminated, or damaged by accident or
abnormal conditions of operation or handling. Fluke warrants that software will operate
substantially in accordance with its functional specifications for 90 days and that it has
been properly recorded on non-defective media. Fluke does not warrant that software will
be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end­user customers only but have no authority to extend a greater or different warranty on
behalf of Fluke. Warranty support is available only if product is purchased through a Fluke
authorized sales outlet or Buyer has paid the applicable international price. Fluke re­serves the right to invoice Buyer for importation costs of repair/replacement parts when
product purchased in one country is submitted for repair in another country.

Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price,
free of charge repair, or replacement of a defective product which is returned to a Fluke
authorized service center within the warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center to obtain
return authorization information, then send the product to that service center, with a de­scription of the difficulty, postage and insurance prepaid (FOB Destination). Fluke as­sumes no risk for damage in transit. Following warranty repair, the product will be re­turned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that failure
was caused by neglect, misuse, contamination, alteration, accident, or abnormal condition
of operation or handling, including overvoltage failures caused by use outside the prod­uct’s specified rating, or normal wear and tear of mechanical components, Fluke will pro­vide an estimate of repair costs and obtain authorization before commencing the work.
Following repair, the product will be returned to the Buyer transportation prepaid and the
Buyer will be billed for the repair and return transportation charges (FOB Shipping Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF
ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PAR­TICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF
DATA, ARISING FROM ANY CAUSE OR THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty,
or exclusion or limitation of incidental or consequential damages, the limitations and ex­clusions of this warranty may not apply to every buyer. If any provision of this Warranty is
held invalid or unenforceable by a court or other decision-maker of competent jurisdiction,
such holding will not affect the validity or enforceability of any other provision.

11/99

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Table of Contents

Title Page

Introduction .......................................................................................... 1

npacking............................................................................................. 1

U

Packing................................................................................................. 1

Safety Regulations................................................................................ 2

Symbols................................................................................................ 3

Accessories........................................................................................... 4

Features................................................................................................. 5

Using the Split-Core Tr

Installing Transformer around Pylon Footing................................... 6

Determ

ining Transformation Ratio Conne

Connecting Transformer to Earth

Maintenance.......................................................................................... 12

Cleaning............................................................................................ 12

Corrosion Prevention........................................................................

Specifications........................................................................................ 13

General..............................................................................................

Technical Data for Selective Earth Resistance Measurements.......... 13

Service.................................................................................................. 14

Storage.................................................................................................. 14

er......................................................... 6

ansform

ctions.............................. 8

Ground Tester.............................. 10

12

13

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List of Tables

Table Title Page

1. Features and Functions ......................................................................... 5

2. Transformation Ratios .......................................................................... 8

iii

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List of Figures

Figure Title Page

1. Features................................................................................................. 5

2. Installing Transformer Around Pylon................................................... 7

3. Transformation Ratio Connections....................................................... 9

4. Test Measurement Setup

....................................................................... 11

v

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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 (R
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. Compliance with current applicable EMC regulations is
documented by the attached P sign.

Unpacking

Refer to “Accessories” while unpacking the Transformer and its accessories
from the shipping carton. Keep the packing material for later transport.

Check for missing parts and inspect the unit carefully for damage, like cracks,
dents or bent parts. If items are missing or any physical damage is apparent,
call Fluke for assistance. Refer to “Service” for information on contacting
Fluke.

E) on

Packing

Use only the original packing material to ship the Transformer.

1

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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.

Qualified personnel are persons familiar with the setup, installation and
operation of the device, are formally qualified to perform activities like
training and instruction, and are authorized to switch on and off, isolate,
ground, and label electric circuits and instruments/systems in accordance with
safety engineering standards.

In this manual, a WWarning identifies hazardous conditions and actions that
could cause bodily harm or death. A WCaution identifies conditions and
actions that could damage the instrument or the equipment under test, cause
permanent loss of data, or impair instrument performance. Disregarding
warning and caution notices can lead to serious physical injury and material
damage.

Fault-free and safe operation of this device requires suitable transport, storage,
setting up, and assembly, as well as careful operation and maintenance.

If there is reason to believe that safe operation is no longer possible, the device
must be put out of operation immediately and must be protected against
accidental usage.

XW Warning

Operating electrical devices implies that parts of the
device could carry dangerous voltages. To avoid electrical
shock or damage to the device:

• If this product is used in a manner not specified by the

product specifications, the protection provided may be
impaired.

• While a measurement is in progress, do not touch the

Transformer, transmission line pylon, earth ground
electrode, auxiliary electrode, or probe.

2

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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).

• Assume that safe operation of the device is not possible

if it has been exposed to major strain during transport
(for example, dropped from some height without visible
external damage).

Symbols

The following symbols are found on the Transformer or in this manual.

X Hazardous voltage. Voltage >30 V dc or ac peak might

be present.

W Risk of danger. Important information. See Users

Manual.

⊥ Common

P Conforms to relevant European Union directives

J Earth ground

3

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EI-162BN

Users Manual

Accessories

The following accessories are shipped with your Transformer:

• 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).

• One contact clamp for establishing an earth ground electrode

connection point on the transmission line pylon. The clamp features a
fastener that secures the clamp to the pylon’s frame. The clamp also
has a 4-mm bore hole that fits a standard banana plug, with a
tightening screw for securing the plug.

• One carrying case

• Users manual

4

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Split-Core Transformer
Features

Features

See Figure 1 and Table 1 for Transformer features and functions.

1

3

NORMA

1000

500

A 6805 06211

200

!

2

Figure 1. Features

evx01.eps

Table 1. Features and Functions

Item Description

A

Transformer half (2)
Transformer end faces have bolts that pivot to aid in separating

the Transformer halves
One Transformer end face has a slotted bolt hole that allows the

bolt to pivot out of the end face

B
C

Transformation ratio connections: ⊥, 200, 500, and 1000
Fastener (2)

5

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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. Install the Transformer around the pylon footing. See Figure 2.

W Caution

• Damage to the Transformer end faces can greatly impair

performance. Use care when joining the end faces
together.

• Foreign substances on the end faces can distort

measurement results. Before fastening together, ensure
the end faces are clean. If required, see “Cleaning.”

• Airgaps between the end faces can distort measurement

results. When fastening the end faces together, ensure
the fasteners are tightened firmly.

4. Join the two halves of the Transformer so the end faces meet. On the

end face with the slotted bolt hole, pivot the fastener/bolt into place.
If fasteners were removed, install the fasteners. Tighten fasteners
firmly. See Figure 2.

If extra leverage is needed to tighten a fastener, insert a lever (like a
small screwdriver) into the 4 mm bore hole in the fastener.

6

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Split-Core Transformer
Using the Split-Core Transformer

Figure 2. Installing Transformer Around Pylon

evx02.eps

7

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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 (⊥). Depending on the combin ation of connections used,
the Transformer can provide transformation ratios of 1:1000, 1:800, 1:500,
1:300, and 1:200.

See Table 2 to determine a suitable transformation ratio for the expected
minimum measuring and maximum parasitic currents, and then see Figure 3
for the Transformer connections that will provide that ratio. These connections
will be used for connecting the Transformer to the Tester’s Ajack.

Note

Be sure to adjust your earth ground tester to the selected
transformation ratio.

Table 2. Transformation Ratios

Current

1:1000

Min. Measuring
Current

Max. Parasitic
Current

[1]

[2]

[3]

For nearly all selective earth ground resistance measurements, a ratio of

[1]

1:800 1:500 1:300 1:200

0.50 mA 0.40 mA 0.25 mA 0.15 mA 0.10 mA

3.0 A 2.4 A 1.5 A 0.9 A 0.6 A

1:1000 is recommended

Ratio

[2]

At 94, 105, 111, and 128 Hz

[3]

At 50, 60 and 16-2/3 Hz

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Split-Core Transformer
Using the Split-Core Transformer

1 : 200

1000

500

200

1000

500

200

1 : 300

1000

500

200

1 : 500

1000

500

200

1 : 800

1000

500

200

1 : 1000

1000

500

200

evx03.eps

Figure 3. Transformation Ratio Connections

9

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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. Install a test lead from the Tester’s earth ground electrode jack to the

contact clamp. Plug the test lead into the bore hole in the clamp and
tighten the tightening screw. See Figure 4.

For Fluke 1625 / 1623 GEO Earth/Ground Testers, the earth ground
electrode jack is labeled C1 or E.

3. Install the 12-m (40-ft) test leads from the Tester’s Ajack to the

Transformer’s transformation ratio connections. To determine which
transformation ratio connections to use, see “Determining
Transformation Ratio Connections.”

4. In accordance with the Tester’s users manual, install test leads from

Tester to the probe and auxiliary earth electrode, and then perform
your earth ground resistance measurement (R

10

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Split-Core Transformer

Using the Split-Core Transformer

Parasitic

Current

Probe

Earth Electrode

Earth/Ground Tester

FLUKE 1623

sulp

Aux.

m

FLUKE

Red

V 05 xa

Measuring

Current

Figure 4. Test Measurement Setup

evx04.eps

11

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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).

• Do not allow liquid to get inside the instrument.

• Do not use sharp tools to clean the end faces.

If your Transformer requires cleaning, wipe it with a cloth lightly dampened
with a mild rinsing agent.

Corrosion Prevention

To help prevent corrosion to the Transformer end faces, the cleavage planes
should be lightly oiled.

12

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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..................................................... 310 mm (12 in)

Depth ................................................................. 30 mm (1.25 in)

Weight

Split-core transformer......................................... 4.9 kg (11 lb)

Total (with accessories and packaging)..............7.7 kg (17 lb)

Transformation Ratios ......................................... 1 : 1000

1 : 800
1 : 500
1 : 300
1 : 200

Technical Data for Selective Earth Resistance Measurements

Insulation voltage .................................................2 kV (core against secondary winding)

Max. current through split-core transformer ..... 3 A (primary current, transformation

Additional Error for Selective Earth Resistance Measurements

Primary current >2.5 mA..................................... ±2 % (transformation ratio 1:1000)

Primary current <2.5 mA..................................... ±5 % (transformation ratio 1:1000)

13

ratio 1:1000)

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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.

To locate an authorized service center, call Fluke using the phone numbers
listed below:

You may visit us on the World Wide Web at
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Storage

When your Transformer is not going to be used, store it in the carrying case
provided.

14

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