3
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Instructions for installation, use and
maintenance for current and voltage
transformers
1. Service conditions
The transformers should be mounted in dry indoor
conditions where the ambient air is not signifi-
cantly polluted by dust, smoke, corrosive gases,
vapours or salt.
The transformers are designed for standard ambi-
ent temperature between –5°C and +40°C. The al-
titude for use should be lower than 1000 m above
the sea level. The transformers may be used also in
higher or lower ambient temperatures and higher
altitudes when agreed between the manufacturer
and purchaser.
2. Technical details
The technical details for each individual trans-
former are mentioned on the rating plate fastened
on the transformer. Values mentioned on the rat-
ing plate must not be exceeded. Markings used on
the rating plate are as follows:
Where:
1VLT5116001275
serial barcode
TPU 60.23
transformer type code
or.n. 544234
order number
150-
300//5/5A+CD
rated transformer ratio + capacitive
divider
50 Hz
rated frequency
1S1-1S2
terminal marking for core number 1,
first tap
1S1-1S3
terminal marking for core number 1,
second tap
2S1-2S2
terminal marking for core number 2
2S1-2S3
terminal marking for core number 2
0.5FS10, 10P10
accuracy classes
10 VA
rated output
ext
extension
Ck-PE
capacitive voltage divider
specifications (see page 5.)
Icth
rated thermal current
24/50/125 kV
highest voltage for equipment /
power-frequency withstand voltage
/ rated lightning-impulse voltage
Ith
rated short time thermal current
(thermal time)
40°C
ambient temperature
IEC 61869-2
referred standard(s)
Idyn
rated dynamic current
E
temperature class
2016
year of production
—
01
—
01 Example of current
transformer label
This installation, use and maintenance
guide is valid for current and voltage
transformers operating in indoor
conditions.
These instructions are valid for
Current transformer type:
TPU; TPE; TTR; BB; BBO; KOKS; KOFA; IHBF
Voltage transformers types:
TJE; TJCL; TJC; TJCH; TDC; TJP; TJPH; TDP; KGUG; KGUGI
