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NT935 AD

NT935 AD

NT935 AD

Product catalog summary
Overview: The NT935 AD is an advanced electronic microcontroller unit designed for dry type and cast resin transformers. It features a dual display, VOTING function, and a high-performance microcontroller for enhanced operational capacity and data management.
Specifications: The device supports both analog (4-20mA) and digital (RS485 Modbus RTU) outputs. It includes 4 PT100 inputs for monitoring transformer and ambient temperatures. The unit is equipped with 5 protection relays: ALARM, TRIP, FAN1, FAN2, and FAULT.
Power Supply: The NT935 AD operates on a universal power supply ranging from 24 to 240 Vac-dc, with reversible polarities.
Inputs and Outputs: It features 4 RTD PT100 inputs with electromagnetic interference protection and cable compensation up to 500 meters. Outputs include alarm relays for temperature and fan control, and a fault relay.
Performance and Testing: The unit is CE compliant, with protection against electromagnetic noise and a dielectric strength of 1500 Vac. It operates within a temperature range of -20°C to +60°C and up to 90% non-condensing humidity.
Data Management: The NT935 AD includes two 13 mm displays for temperature and status messages, with LEDs indicating alarm and fan states. It supports temperature monitoring from 0°C to 240°C, with programmable alarm thresholds and diagnostic functions.
Options and Certifications: The unit can be certified for the American and Canadian markets, as well as for marine applications. It is available with a tropicalized coating for harsh climates and conforms to Railway Applications EN50121-5 standards.
Dimensions: The device measures 100 x 100 mm with a depth of 131 mm, fitting a panel cut-out of 92 x 92 mm.
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Catalog excerpts

NT935 AD-1

La NT935 AD e un dispositivo elettronico a microcontrollore appositamente studiato per i trasformatori incapsulati in resina e a secco. Costruita con il layout e i plus della Nuova Piattaforma (doppio display, funzione VOTING, microcontrollore piu performante con aumento della capacita operativa e di gestione dei dati), la NT935 AD mette a disposizione dell'utente in un unico prodotto, le uscite: In grado di monitorare la temperatura del trasformatore come la standard T154, grazie al sistema di comunicazione a distanza, oltre a trasmettere le temperature in tempo reale, offre la possibility di variare tutte le impostazioni desiderabili tra cui le soglie di intervento dei rele. E dotata di 4 ingressi PT100 per monitorare sia la temperatura degli avvolgimenti che la temperatura ambiente (4° canale). I rele di intervento sono 5: rele di ALARM per segnalare l'allarme ad alte temperature, rele di TRIP per sganciare il trasformatore nel caso raggiunga la soglia massima, rele di FAN1 e FAN2 per attivare il sistema di ventilazione, rele di FAULT per segnalare eventuali guasti. A richiesta la centralina puo essere certificata c(Jl)b per il mercato americano e canadese, nonche per applicazioni navali. 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). - NT935 BASIC centralina base senza uscite digitali o analogiche (cod. 1CN0131). The NT935AD is an electronic microcontroller based unit specifically designed for dry type and cast resin transformers. Developed with layout and advantages of the new technology platform (dual display, VOTING function, new microcontroller with increased operational capacity and data management), the NT935 AD provides the user, in a single product, the outputs: Able to monitor the temperature of the transformer as the T154 standards, thanks to the remote communication system, in addition to transmitting real-time temperatures, offers the possibility to vary all the settings including the relays intervention thresholds. It is equipped with 4 PT100 inputs to monitor the temperature of the windings and/or the ambient temperature (4° channel) and thanks to the versatility of the edition 2016, other sensor inputs are available. The protection relays are 5: ALARM relay to give a signal for high temperatures, TRIP TFr„v„TFM Ascolta, Realizza, Propone, Progetta. Listen, Realize, Propose, Design. relay to disconnect the transformer in case it reaches the maximum threshold, FAN1 and FAN2 relays to start the ventilation system, FAULT relay to signal eventual failures. On request, the unit is available with certification for Canadian and American market c(Ml)iii, as well as :£j£, for marine applications. 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. OTHER VERSIONS - NT935 BASIC unit without any outputs such as Analog or Digital (cod. 1CN0131).

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NT935 AD-2

Specifiche Tecniche - Alimentazione • Valori nominali 24-240 Vca-cc • 4 ingressi RTD PT100 a tre fili (sezione max 1,5 mm2) • Collegamenti su morsettiere estraibili • Canali ingresso protetti contro i disturbi elettromagnetici • Compensazione cavi per sonde fino a 500 m (1 mm2) • 2 rele di allarme (ALARM-TRIP) • 2 rele di gestione ventilazione (FAN1 e FAN2) • 1 rele guasto sonde o anomalia funzionamento (FAULT) • Rele di uscita con contatti da 10A-250 Vca-res COS$=1 • Costruzione in accordo alle normative CE • Protezione contro disturbi elettromagnetici CEI-EN61000-4-4 • Rigidita dielettrica:...

 Open the catalog to page 2

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*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.
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