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CTT-4
CTT-4
4 PT100 sensors.
2 alarm levels.
Maximum values.
RS485.
AO.
DEVICES FOR PROTECTION, CONTROL, THERMIC MONITORING OF TRANSFORMERS,
MOTORS, GENERATORS, INDUSTRIAL APPLICATIONS
Temperature measuring unit. 4 PT100 RTD sensors. Control and safety of power transformers.
| Introduction |
| Range |
CTT |
| Product name |
CTT- 4 |
| Product type |
Temperature monitor device |
| Technical characteristics |
| Device application |
Temperature monitoring of power transformers |
| Type of measurement |
Display of instantaneous and maximum temperature
Double intervention level: alarm (ALARM) and trip (TRIP)
Self-diagnosis function for anomalies or incorrect installation (FAULT)
Possibility of activating forced ventilation (FAN)
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| Supply voltage |
20...250 VAC/DC
115-230-400 VAC 50...60 Hz (optional) |
| Power consumption |
4 VA |
| Display type |
LED 7 digit |
| Measure inputs |
4 PT100 RTD (not included) |
| Sensor type |
3 wires (2 and 4 wire versions also supported) |
| Specific error |
1 degree every 0,39 ? |
| Measurement range |
0...220 °C +/- 2 |
| Compensation |
20 ? max |
| Tripped delay/hysteresis |
5 s/2 °C |
| Output relays |
4 |
| Output type |
NA-C-NC |
| Programmable functions |
Alarm
Trip
Fan
Self-diagnosis |
| Mounting mode |
Flush mount 96x96 mm |
| Standards |
CEI EN 50081-2
CEI EN 50082-2
CEI 14.1
CEI EN 60255 |
| Weight |
500g |
| Environment |
| IP degree of protection |
IP52 front
IP20 terminals |
| Relative humidity |
5...90% |
| Operating temperature |
-10...+55 °C |
| Storage temperature |
-25...+80 °C |
| Options |
| Transparent cover IP65 |
| Number of analog outputs |
1-4 AO |
| Communication port |
RS485 Modbus |
APPLICATIONS
Overtemperatures caused by overloads or internal failure due to degradetion of the dielectric qualities of insulating materials in transformers and electrical machines, inevitably leads to a reduced efficiency andenergy loss in ditribution systems. To prevent and control degradation ofinsultaing materials in electrical machines due the thermal stress, it sinecessary to use integrated measurement systems such as CTT control units.
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