Network Transformers - Augier

TED MTT - 16, 25, 32, 50 kVA
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
Delectric : oil
Power rating : 16 - 25 - 32 - 50 kVA
Nominal power depending on public
lighting standards : 12.8 - 20 - 25.6 - 40 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 leaflet 60 10472)
Maximum current : 80 A
Maximum overall cable diametre : 44.5 mm, maximum
allowance included.
On request : elbow bent terminals.
b- «Lead-through» connection in transformer.
TAP CHANGER FOR VOLTAGE ADJUSTMENT
Adjustment by strips off voltage, taps + 5, + 7,5 % (3)
MV PROTECTION
By means of two HRC fuses, rupturing capacity 15 kA.
PHASE SELECTOR
By means of a switching device, allowing even load
distribution among the three phases of supply network.
(1) On request : other voltages compatible with primary winding
insulation level.
(2) On request : other voltages compatible with secondary
winding insulation level.
(3) Other percentage values on request.
LV OUTLET
Two-pole 6 meter-long H.07.RN.F cable
16 kVA : cross-section 25 mm²
Two single-pole 6 meter-long H.07.RN.F cable
25 kVA : cross-section 50 mm²
32 kVA : cross-section 50 mm²
50 kVA : cross-section 95 mm²
On request for the 16 kVA : two-pole plug-in terminal
for H.07.RN.F cable with 25 mm² maximum cross-section.
LV PROTECTION
Without low voltage protection. On request, the cut-out
device ensures direct magnetic protection and thermal
protection by means of a probe incorporated in the
windings (only for the 16 and 25 kVA).
Breaking capacity : 16 kVA : 85 kA - 25 kVA : 85 kA
Protection by HRC fuses.
LV POTENTIAL CONDITION
One end of the LV winding is connected to the earthing
terminal (blue lead).
On request: Centre tap of the LV winding connected to
earthing terminal.
EARTHING TERMINAL
By means of a M10 threaded rod, connected internally to
magnetic circuit.
DIELECTRIC TESTS
Impulse withstand : 60 kV - Wave 1 / 50
Power frequency withstand voltage : 22 kV - 50 Hz -
1 minute.
USE INFORMATION WRITTEN ON COVER
MV cable terminal assembly instructions :
manual available on request for different cable types.
EQUIPMENTS
The transformers are delivered with:
Two MV plug-in terminals for assembly.
Two non-waterproof blanking off taps.
BIP is delivered separately.
Handling ropes.
One technical leaflet for assembling MV plug-in
terminals.
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