Supply of Three Phase Transformers
Reference: 65-12-4406 9/2/2013, Location: Middle East
Category: Transformers
Scope of Work
Item 001 QTY=2, Three Phase Transformers hermetically sealed type for outdoor installation (off
shore-oil port ) with specifications as following:
IP55 , area zone (2) EExde-IIB-T4/T3
Humidity 95%
cooling type ONAN
continuous duty
Ambient temp. 55° c
vector group Dyn11
off load tap .changer on HV ± 2 x 2.5 %
Rated power 1 MVA , 50 HZ
Rated voltage
primary 3.3 KV
secondary 400/230 V
winding material HV , LV copper, HV and LV connection with Elephant nose or
equivalent boxes suitable for connect 3.3 kv cables (size 3x70 mm2) XLPE
through gland, and 4 cable size 1x240 at LV side through glands
terminal box for connecting control cable.
protection devices:
1- protection against high temperature (trip + alarm)
2- protection against low oil level (trip + alarm)
3- protection against high pressure (alarm + trip)
tank accessories filling and venting nipples
oil draining valve
pressure relief device
name plate for transformer specification
two earthling screws
two lifting eyes on the cover
four traction trolley on the under carriage.
Item 002 QTY=4, same as item (1) but 630 KVA
Item 003 QTY=2, same as item (1) but 500 KVA (IP65 , EExd -IIB/IIC-T4/T3)
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