Network Transformers - Augier

TEH TTT - 50, 63, 80, 100, 125, 160 kVA
TYPE
Outdoor, watertight, metal tank specially treated against
corrosion, buriable in a visible in concrete pit.
Protection level : IP 68
Primary voltage : 5500 V (1)
Primary winding insulation : 7.2 kV
Secondary no-load voltage : 410 V (2)
Secondary winding insulation : 1.1 kV
Vector group : 50 kVA : Yzn 11
80 - 100 kVA : Dyn 11
Dielectric : oil
Rated power : 50 - 80 - 100 - 125 - 160 kVA
Nominal power depending on public lighting standards :
40 - 50.4 - 64 - 80 - 100 - 128 kVA
The transformers conform to NFC 52 410 standards.
CONDITIONS OF USE
Environment class AD7 : can be partially or wholly
immersed in water for limited time period.
MV CONNECTION
a- Right three p-hase, plug-in terminals with shield for
three- phase, 6 kV, belt or radial field type cable (see
leaflet ). 60 10472)
Maximum current : 80 A
Maximum cable diameter : 44,5 mm (maximum
allowance included)
Optional : bent plug-in terminals.
b- «Lead-through» connection of the network to the
Transformer.
TAP CHANGER FOR VOLTAGE ADJUSTMENT
By switch, only to be operated off-load
Off-load adjustment plugs : + 5, + 7,5 % (3)
MV PROTECTION
By three H.R.C. fuses with breaking capacity 15 kA
(1) Other voltage values on request ; must be compatible with
insulation level of primary winding (7,2 kV)
(2) Other voltage values on request ; must be compatible with
insulation level of secondary winding (1,1 kV)
(3) Other percentages on request
LV OUTPUT
Four single-pole 6 metre-long H.07.RN.F cable
50 - 63 - 80 kVA : 1 x 35 mm² cross section
100 kVA : 1 x 50 mm² cross section
125 kVA : 1 x 70 mm² cross section
160 kVA : 1 x 70 mm² cross section
LV PROTECTION
Without low voltage protection. Three- thermal probes
incorporated in the windings are opened on the H 07 RNF
2 x 2,5 mm² cable and ensure thermal protection of
equipment.
LV ELECTRICAL POSITION
LV neutral is connected to earth terminal inside the
transformer.
Optional : neutral not connected inside the transformer
EARTH CONNECTION
The rods are welded onto the cover and tank.
DIELECTRIC TESTS
Impulse withstand voltage : 60 kV - wave 1 / 50
Power frequency withstand : 22 kV - 50 Hz - 1 minute
USER INSTRUCTIONS WRITTEN
CLEARLY ON COVER
MV cable terminal assembly instructions :
technical leaflets available on request, according to cable
type.
EQUIPMENTS
The transformers are delivered with:
Two HV preparation leaflets.
Non-waterproof transport plugs.
BIP delivered separately.
Handling ropes.
One technical leaflet for assembing MV plug-in
terminals.
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