DUT250VG-300/G Type 1+2+3, 3-phase surge protector
DUT250VG-300-G-cau-tao
DUT250VG-300/G Type 1+2+3, 3-phase surge protector
DUT250VG-300-G-cau-tao
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  • Series
    DUT250VG
  • Model
    DUT250VG-300/G
  • Brand / Made in
    CITEL / FRANCE
  • Type 1+2+3, 3-phase surge protector
  • Common and differential mode
  • Very compact monobloc enclosure
  • Iimp by pole/total : 25kA
  • Internal disconnection, status indicator
  • Optimized to TOV
  • EN 61643-11, IEC 61643-11 and UL1449 ed.5 compliance

The DUT250VG is a compact and heavy duty Type 1+2+3 SPD, designed to be connected at the entrance of the electrical installation, on a 3-phase 230/400 V AC network. The Spark gap + Varistor technology allows a very low level of protection and an absence of following current. The DUT250VG is a 3-phase SPD and provides a common and differential mode protection. This SPD is built in a compact enclosure for DIN rail mounting.

Electrical Characteristics

  • SPD type (following IEC tests): 1+2+3
  • Network: 230/400 V 3-phase+N
  • AC system: TT-TNS
  • Nominal line voltage Un: 230/400 Vac
  • Max. AC operating voltage Uc: 255 Vac
  • Temporary Over Voltage (TOV) Charasteristics - 5 sec (Without disconnection) UT: 335 Vac withstand
  • Temporary Over Voltage (TOV) Charasteristics - 120 mn (Without disconnection or with safety disconnection) UT: 440 Vac disconnection
  • Temporary Over Voltage N/PE (TOV HT) (Without disconnection or with safety disconnection) UT: 1200 V/300A/200 ms withstand
  • Residual CurrentLeakage current to Ground Ipe: None
  • Follow current If: None
  • Nominal discharge current (15 x 8/20 µs impulses) In: 40 kA
  • Max. discharge current (max. withstand @ 8/20 µs by pole) Imax: 100 kA
  • Impulse current by pole (max. withstand 10/350µs by pole) Iimp: 25 kA
  • Total lightning current(max. total withstand @ 10/350µs) Itotal: 50 kA
  • Withstand on Combinaison waveform IEC 61643-11 Class III test: 1.2/50µs - 8/20µs Uoc: 6 kV
  • Withstand on overvoltages IEEE C62.41.1: 20 kV
  • Admissible short-circuit current Isccr: 50000 A
  • Connection mode(s): L/N and N/PE
  • Protection mode(s): Common/Differential mode
  • Residual voltage @ In (8/20 µs) Up-in: 1.1 kV
  • Protection level L/N @ In (8/20µs) Up L/N: 1.5 kV
  • Protection level N/PE @ In (8/20µs) Up N/PE: 1.5 kV
  • Specific energy by pole max. withstand 10/350 µs W/R: 156 kJ/ohm
  • Mechanical Characteristics
  • Technology: VG
  • SPD configuration: 3-phase + N
  • Connection to Network: By screw terminals: 6-35mm² / by bus
  • Format: Multipolar modular box
  • Mounting: Symmetrical rail 35 mm (EN 60715)
  • Housing material: Thermoplastic UL94 V-0
  • Operating temperature: -40/+85°C
  • Protection rating: IP20
  • Failsafe mode: Disconnection from AC network
  • Disconnection indicator: 3 mechanical indicator by pole
  • Remote signaling of disconnection: Output on changeover contact
  • Dimensions: See diagram

Disconnectors

  • Thermal disconnector: Internal
  • Installation ground fault breaker: Type S or delayed
  • Fuses: Fuses Type gG - 315 A

Standards

  • Standards compliance: IEC 61643-11 / EN 61643-11 / UL1449 ed.4
  • Certification: EAC

INSTALLATION

DUT250VG-300/G Type 1+2+3 AC surge protector - 3-phase+N are connected in parallel on the AC network and must be equipped with external fuses for short-circuit current protection

  • The total length of parallel connection wires to AC network must be lower than 0.5 m in order not to increase the protection level (Up) provided by the SPD.
  • Wiring is made by screw connections. On some models, a distribution bus can be used.
  • The protection wire coming from the SPD must be connected to the bonding bar of the electrical panel. Paralleling the protection wire with phases conductors must be avoided.
  • The cross sectional wire must be 6 mm² minimum for Type 2 SPD and 16 mm² for Type 1.
  • Local earthing resistance must be in compliance with the electrical rules.

Further information can be found in IEC 61643-12 standard (selection and application principles for low voltage SPD).

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