Lumasense-technologies LumaSHIELD Controller Installation Guide: Winding Bedienungsanleitung PDF herunterladen

LumaSHIELD Installation Guide: Winding Temp. Sensors

Introduction

One of the most common causes of ﬁber optic sensor

systems failure is a faulty installation. To ensure proper

sensor installation, this guideline should be read and fol-

lowed carefully.

LumaSense offers a unique and easy method for install-

ing ﬁber optic temperature sensors into power trans-

formers. This method is based on LumaSense all-dielectric

ﬁber-optic TC connector and on its specially grooved key

spacer Because the all-dielectric ﬁber optic TC connector

can be placed anywhere in the transformer, this method

eliminates the cumbersome and hazardous operation of

cable spooling and handling during installation.

The specially grooved mounting disk, unique to Luma-

sense, ensures full protection against mechanical stresses

that often cause sensor damage when installed in the

transformer key spacer. Because the sensor’s sensing tip

is held loose in the groove (see Figure 10 in the next sec-

tion), it is much less exposed to the compressive stresses

during the winding compression manufacturing step of

the power transformer.

The following guidelines cover the installation of the

temperature sensors in the winding with or without the

optional mounting disk.

Figure 1: Tip of sensor with optional factory-installed

mounting disk.

Figure 2: Overview of sensor installation in transformer tank showing the TC connectivity solution.

The following ﬁgure shows the all dielectric TC connec-

tion schematic.

Since the TC connection can be placed anywhere in the

transformer, only short ﬁber optic cable lengh is needed:

this avoids conveying and handling long spans of ﬁber-

optic cable during sensor installation and reduces the

chances of sensor damage.

Figures 3, 4, and 5 show a typical installation in the power

transformer winding.

General Overview of the TC Connectivity Solution

1 2 3 4

Inhaltsverzeichnis

Seite 1 - Introduction

LumaSHIELD Installation Guide: Winding Temp. SensorsIntroductionOne of the most common causes of ﬁber optic sensor systems failure is a faulty install

Seite 2 - Installing a Sensor Equipped

Installing a Standard SensorThis section gives some advice for installing a standard sensor (without the optional mounting disk) into a key spacer.The

Seite 3

The customer must prepare its own key spacers for install-ing the ﬁber optic sensor. A groove and an opening have to be made in the spacer. The ﬁber o

Seite 4

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Lumasense-technologies LumaSHIELD Controller Installation Guide: Winding Bedienungsanleitung

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Inhaltsverzeichnis

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