3
—
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:
serial number
transformer type code
order number
rated transformer ratio
rated frequency
accuracy classes
rated output
ext extension
I
cth
rated thermal current
weight
Ith rated short time thermal current
(thermal time)
ambient temperature
referred standard(s)
Idyn rated dynamic current
E temperature class
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:
Voltage transformers types:
Štítky k zakázce: 996691 / Labels for order: 996691
ÚV E404011568 - 3 ks
36/70/170 kV Ith: 16(1s) kA
Idyn: 40 kAIEC 61869-2
2024
81.1kg
40°C
Icth:120A
TCM 212/18-5547
s.n. 1VLT5124081571
50 Hz
100//1/1/1/5A
or.n.:996691
TPU 70.63
1S1-1S2 100/1A cl.5P20 5VA
Rct≤1.0Ω
100/1A cl.0.2SFS5 10VA ext.120%
100/1A cl.5P40 5VA
Rct≤2.0Ω
4S1-4S2 100/5A cl.0.2SFS5 10VA ext.120%
Made by ABB
E
1VLT5124081571
1VLT5124081572
1VLT5124081573
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