video corpo

NT133-3

NT133-3

NT133-3

Product catalog summary
Overview: The NT133-3 is a comprehensive and user-friendly device designed for advanced temperature control of high voltage (HV) and medium voltage (MV) oil power transformers. It allows for the monitoring of oil temperature, management of the cooling system, and calculation of the thermal image of three windings using a unique algorithm.
Specifications:
  • Inputs: Includes one double PT100 input for redundant control and three universal inputs for current transformers (CTs) ranging from 0.8 to 5.2 A.
  • Outputs: Equipped with relays for ALARM, TRIP, FAN, PUMP, and FAULT indications. The output contacts have a capacity of 5A-250 Vac.
  • Power Supply: Universal input from 24 to 240 Vac-dc with reversible polarities.
  • Communication: RS485 output with Modbus RTU protocol for remote control functions.
Performance and Testing:
  • Assembled in accordance with CE standards, with protection against electromagnetic interference (CEI-EN61000-4-4).
  • Insulation exceeds 100 Mohm at 500 Vdc, and dielectric strength is 2 KV RMS at 50/60 Hz for one minute.
  • Accuracy: Oil and winding temperature measurements are accurate to ±1% full scale value ±1 digit.
  • Operating temperature ranges from -20°C to +60°C, with humidity tolerance up to 90% non-condensing.
Features:
  • Digital linearity of sensor signals and self-diagnostic circuit.
  • Optional tropicalization for resistance to harsh climates.
  • Displays include two 13 mm, 3-digit screens for temperature and message display, with LEDs indicating ALARM, TRIP, FAULT, FAN, PUMP, and RS485 communication status.
  • Temperature monitoring ranges from -40°C to +200°C for both oil and winding channels.
  • Includes thresholds for oil and winding channels, as well as ON-OFF thresholds for fan control.
  • Memory for maximum temperatures, alarms, and sensor faults, with a front reset button for alarms.
Dimensions: The unit measures 144 x 72 mm with a depth of 131 mm, and requires a panel cut-out of 139 x 67 mm.
See more

Catalog excerpts

NT133-3-1

La centralina NT133-3 e un apparecchio completo e semplice per un controllo evoluto della temperatura dei trasformatori di potenza in olio AT e MT. Con un unico apparecchio e possibile controllare la temperatura dell'olio, comandare il sistema di raffreddamento e calcolare I'immagine termica dei 3 avvolgimenti, grazie ad esclusivo algoritmo. La centralina e dotata di 1 ingresso per il collegamento ad una PT100 doppia con controllo ridondante e di 3 ingressi universali per trasformatori di corrente TA. In uscita sono disponibili i rele per la gestione di allarme (ALARM), sgancio (TRIP), comando ventilazione (FAN), comando pompe circolazione olio (PUMP) e segnalazione guasto (FAULT). E inoltre dotata di uscita RS485 Modbus per funzioni di controllo remoto. Tutte le nostre centraline possono essere fornite tropicalizzate, ovvero resistenti a situazioni climatiche difficili, in particolare caratterizzate da temperatura e tasso di umidita elevati (quali si trovano, appunto, nei climi tropicali). ALIMENTAZIONE UNIVERSALE Da 24 a 240 Vca-cc. The NT133-3 is a complete and simple unit, for a sophisticated temperature control of HVand MV Oil power transformers. With a single device you can control the oil temperature, you can drive the cooling system and you can calculate the thermal image of the 3 windings with an exclusive algorithm. The unit is equipped with 1 double PT100 input for a redundant control and 3 universal inputs for current transformers (CT). Output relays are available for: ALARM, TRIP, FAN cooling system driving, oil circulation PUMP control and FAULT indication. The unit is also equipped with Modbus RS485 output for remote control functions. All our units can be supplied with a special coating on the electronic cards, resistant to difficult weather conditions, particularly characterized by high temperature and humidity (which are in tropical climates). UNIVERSAL POWER SUPPLY With input from 24 to 240 Vac-dc. POWER SUPPLY OUTPUTS ALARM RELAYS USCITE RELE DI ALLARME Ascolta, Realizza, Propone, Progetta. Listen, Realize, Propose, Design.

 Open the catalog to page 1
NT133-3-2

• Valori nominali: 24-240 Vca-cc • Uscita RS485 con protocollo Modbus RTU • Collegamenti su morsettiere estraibili • Canali d'ingresso protetti contro i disturbi elettromagnetici • Compensazione cavi per sonde fino a 500 m (1 mm2) • 1 rele per ALARM (pre-allarme) Oil e Winding • 1 rele per TRIP (sgancio) Oil e Winding • 1 rele per PUMP (pompe) • 1 rele per guasto sonde o anomalia di funzionamento (FAULT) • Rele di uscita con contatti da 5A-250 Vca cos$=1 • Costruzione in accordo alle normative CE • Protezione contro i disturbi elettromagnetici CEI-EN61000-4-4 • Isolamento: maggiore di 100 Mohm...

 Open the catalog to page 2

All TECSYSTEM srl catalogs and technical brochures

  1. T1048 ETH

    2  Pages

  2. NT538 ETH

    2  Pages

  3. NT935 ETH

    2  Pages

  4. CONV ETH

    1  Page

  5. TCK

    1  Page

  6. PTFE

    1  Page

  7. PTSP

    1  Page

  8. PTO

    1  Page

  9. PTSW

    3  Pages

  10. PTSE

    1  Page

  11. PTC

    1  Page

  12. PT73

    1  Page

  13. VRT600

    2  Pages

  14. VRT200

    2  Pages

  15. MM453 AD

    2  Pages

  16. MT4X4 D

    2  Pages

  17. T512

    2  Pages

  18. NT538 AD

    2  Pages

  19. T412 2025

    2  Pages

  20. NTF999

    2  Pages

  21. T154

    2  Pages

  22. NT935 AD

    2  Pages

  23. NT511 AD

    2  Pages

  24. NT539

    2  Pages

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.
About DirectIndustry
DirectIndustry is a marketplace that offers B2B players a complete experience, from product sourcing to purchase. DirectIndustry is an entity of VirtualExpo Group.