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T119
TECSYSTEM S.r.l ®
1) TECHNICAL SPECIFICATION
AUXILIARY POWER SUPPLY
• Rated voltage 24-240 Vac-dc
• Maximum ratings 20-270 Vac-dc
• Vdc with reversible polarities
INPUTS
• 3 series of PTC inputs:
- 1 serie for ALL1
- 1 serie for ALL2
- 1 serie for FAN
• removable rear terminals
• input channels protected against electromagnetic noises and
spikes
OUTPUT
• 2 alarm relays (ALL1-ALL2)
• 1 alarm relay for fan control (FAN) with time delay off ( 5-10-20-
40 min)
• output contacts capacity: 5A-250Vac res.
TESTS AND PERFORMANCES
• assembling in accordance with CE rules
• protection against electrical and magnetic noises CEI-EN50081-
2/50082-2
• dielectric strength 2500 Vac for 1 minute from relays to sensors,
relays to power supply, power supply to sensors
• ambient operating temperature –20°C to +60°C
• humidity 90% no-condensing
• ABS self-extinguishing housing – NORYL 94V0
• Opt. Protection treatment of electronic part
• Frontal in polycarbonate – IP54
• Burden 2 VA
• Data storage 10 years minimum
• Self-diagnostic circuit
• (*) Vibration test IEC 68-2-6
Amplitude ± 1 mm from 2Hz to 13.2Hz
Acceleration ± 0.7G from 13.2Hz to 100Hz.
• (*) Seismic test under according to IEEE 344-1.987
*T119 Cross reference T154 for constructive analogy
DISPLAYING AND DATA MANAGEMENT
• Led indicating alarm. Trip channel or fan
• Led indicating fault
• 2 alarm thresholds
• 1 alarm ON threshold for fan control
• entering the programming by frontal push button
• automatic output from programming cycle after 1 minute of no-
operation
T119 DIMENSIONS
• 48X96mm DIN 43700 depth 150 mm (with rear terminals) panel
cutout 44x92 mm
T119DIN DIMENSIONS
• 106x58 mm DIN 43880 depth 90mm
The T119 is the most advanced unit on the market as regards temperature monitoring units for MT cast resin transformers, which utilize
PTC sensors. The unit gives the ALL1 pre-alarm and TRIP signals when the temperature limits pointed out by the PTC of the windings
are reached. The T119 is arranged to control the cooling ventilation of the transformer. The unit controls continuously the efficiency of
PTC sensors and when one of these is defective, you have immediately a signal of defective sensor. The FAN relay is energized until
temperature is superior than dNAT value; when the temperature gets down under this value, the relay is still energized for the established
ventilation time (5-10-20-40’ delay function). As the PTC actually produced by all the European manufacturers have different specifica-
tions among them, Tecsystem Srl is not answerable for wrong functioning of the control system, caused by PTC with different resistance
values, from those indicated in the following table (table 1).
Table 1
FUNCTION
RESISTANCE FOR SINGLE PTC
OR MULTIPLE IN SERIE
NO ALARM
Temperature of the machine under the alarm set
HIGHER THAN 50W
ALARM
Alarm set reached for FAN-ALL-TRIP
HIGHER THAN 1800W
FOC
Sensor circuit OPEN
HIGHER THAN 200KW
With fast increase Í3”
FCC
Sensor circuit SHORT CIRCUIT
LOWER THAN 15W
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