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MT 300

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Microprocessor temperature monitor system for electrical transformers with 2 inputs for PTC probes
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  • Two PTC inputs with fixed temperature level
    (see PTCK series sensors)
  • Possibility to connect up to six PTCK sensors in line for each channel (max. 1.5 Kohm for channel)
  • Interconnections among the relays contacts are shown in schema
  • Visualization correct working state
  • Visualization pre-alarm and alarm state
  • Intrinsic sure protection system with relays always on and signalling with switch off relays
  • Delay at power on (1 sec. about) for a direct connection with a shut down device
  • Assembly on rear panel by quick coupling with Din rail
  • Power supply (220 ÷ 240) Volt AC 50/60Hz
  • Tropicalization (optional)
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Technical features
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Dimensions

  • Standard box suitable for DIN rail 90x52X57 mm
  • Front panel 49×42 mm
  • Weight 0,2 Kg

Power Supply

  • Power supply (220 ÷ 240) Volt AC ± 10% 50/60Hz, absorption 2VA

Inputs

  • Two distinguished input channels for PTC sensors with possibility to connect max six sensors in serial connections on every branch
    (max 1.5 Kohm per branch)

Outputs

  • Output by relays with free contacts connected as per schema at the end of the manual.
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Characteristics

  • Self-extinguishable NORYL Box
  • Protection degree front panel in polycarbonate: IP30
  • Protection degree on terminal board side: IP20
  • Two 250V AC, 5A maximum relays contact (resistive load)
  • Dielectric strength between relays contacts and
    alimentation line 2,5KV for 60”
  • Working temperature of device from -40°C to 60°C
  • Max allowed dampness in the room 90% not condensing
  • Electrical connections with fast-polarised connectors
  • Technical manual in five languages (and more on request)
  • Construction in accordance with rules 
  • Tropicalization (optional)
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