Network Transformers - Augier

TYPE
Single-phase transformer for three -phase networks. Cast
in resin, corrosion resistant, water-tight, plug-in
connection designed for directly buried installation.
Protection degree : IP 68
Primary voltage : 5500 V (1)
Primary winding insulation level : 7.2 kV
Secondary no-load voltage : 237 V (2)
Secondary winding insulation level : 1.1 kV
Coupling : single-phase
Dielectric : oil
Power rating : 2 - 3 - 5 - 10 kVA
Nominal power depending on public lighting
standards : 1.6 - 2.4 - 4 - 8 kVA
Transformers comply with NFC 52410 standards.
OPERATING CONDITIONS
Environmental condition AD7: can be partly or completely
immersed in water, for a limited time period.
MV INLET
a- Three-phase plug-in connection for three-phase cable,
6 kV, belt or radial field type (see description 60 10472)
Maximum current: 80 A
Maximum overall diameter of cable: 44,5 mm, maximum
allowance included.
b- «Lead-through» connection in transformer.
TAP CHANGER FOR VOLTAGE ADJUSTMENT
No voltage adjustment provided.
MV PROTECTION
By means of two HRC fuses, rupturing capacity 10 kA.
PHASE SELECTOR
Medium Voltage fuses allows even load distribution
among the three- phases of supply network.
(1) On request : other voltages compatible to the primary
winding insulation level.
(2) On request : other voltages compatible to the secondary
winding insulation level.
TED MTT - 2, 3, 5, 10 kVA
LV OUTLET
Two-pole 6 m. H.07 cable :
2 to 5 kVA: cross-section 6 mm²
10 kVA: cross-section 10 mm²
On request: Two-pole plug-in terminal for H.07.RN.F
cable with maximum cross-section 25 mm².
LV PROTECTION
Without Low Voltage protection
On request:
The cut-out device ensures direct magnetic and thermal
protection by means of a probe incorporated in the
windings, breaking capacity: 6 kA
*single-pole + neutral, curve B, for TED ≤ 6 kVA:
*two-pole, curve B for TED > 6 kVA
By HRC fuses.
LV ELECTRICAL POSITION
The end of the LV winding is linked to earthing terminal
(blue conductor).
On request: Centre tap of LV winding connected to the
earthing terminal. In this case, possible LV protection
must be two-pole.
EARTHING TERMINAL
By means of a M10 threaded rod, connected internally to
magnetic circuit.
DIELECTRIC TESTS
Impulse withstand: 60 kV - Wave shape 1 / 50
Power frequency
withstand voltage: 22 kV - 50 Hz -1 minute
USER INFORMATION WRITTEN ON COVER
MV cable terminal assembly instructions : manual
available on request for different cable types.
EQUIPMENTS
Transformers are delivered with:
Two MV plug-in terminals for assembly.
Two non-waterproof transport only taps.
BIP delivered separately.
Handling ropes.
One technical leaflet for assembling MV plug-in
terminals.
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