Relays and control elements

Offline insulation relay
Offline insulation relay
Offline insulation relay
Offline insulation relay
Offline insulation relay
Offline insulation relay

IMD-2R

IMD-2R, Monitoring relay for offline insulation. It controls and monitors the insulation resistance of the receivers that are occasionally disconnected from the electrical network,

Code: P33020.

    INFORMATION

    Description

    It is an IMD (insulation monitoring device), ohmic insulation relay, which is used to protect and monitor the insulation (kΩ, MΩ) between the phase/s of the receiver and the protection cable reference. It is not a permanent monitor (at rated voltage of the electrical installation). It is only used for loads disconnected from the voltage system. If it detects an installation fault, it prevents the connection of the network, anticipating a trip of the other protections through a circuit breaker with control coil.

    Applications

    Ideal for critical continuous service electrical installations:

    • Tunnels
    • Street lights
    • Pumping systems
    • Generators
    • Hospitals
    • etc.

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    SPECIFICATIONS

    AC power supply
    Installation category
    CAT III 300 V
    Consumption
    2,2 … 7 VA
    Frequency
    50 … 60 Hz
    Nominal voltage
    90 … 276 V~
    DC power supply
    Installation category
    CAT III 300 V
    Consumption
    1,3 … 1,9 W
    Nominal voltage
    90 … 276 Vdc
    Mechanical characteristics
    Size (mm) width x height x depth
    35 x 112 x 84 (mm)
    Envelope
    Polycarbonate V0
    Torque setting
    0,5 … 0,6 Nm
    Cable gauge at power supply terminals
    between 1 ... 1,5 mm2
    Weight (kg)
    0,16
    Environmental characteristics
    Protection class
    IP 20
    Relative humidity (without condensation)
    5 … 95 %
    Storage temperature
    -30 … +80 ºC
    Working temperature
    -10 … +55 ºC
    Electrical characteristics
    Earthing system
    TT-TN-IT
    Measurement circuit with insulation monitoring
    Impedance Zi at 50 Hz
    0,43 MΩ
    DC (Ri) internal resistance
    0,35 MΩ
    Maximum lm measured current (With RF = 0 Ω)
    10 µA
    Permanent allowable extraneous voltage (Ufg)
    300 Vcc
    Response time (tan) = 0.5 x Ran and Ce = 1 µF
    < 2 s
    Peak value measuring voltage (Um)
    10 Vcc
    Response value (Ran)
    100
    Hysteresis
    + 25%
    Standards
    Electrical safety, Maximum height (m)
    2000
    Electrical safety, Contamination level/class
    Category 2
    Standards
    IEC 61557-1, IEC 61557-8, IEC 61326-1, IEC 61010-1
    User interface
    LED
    7 LED: ON, AL1 (LED bar), AL2
    Keyboard
    3 keys
    Display type
    LCD (Backlight bicolor)
    PE connection fault measurement
    Fault detection
    Open circuit (> 100 kΩ)
    Digital relay outputs
    Quantity
    2
    Maximum current
    5 A
    Maximum open contact voltage
    250 V~
    Electrical life
    1 x 105 ciclos (250 Vca / 5A)
    Mechanical life
    15 x 106 Cycles
    Maximum switching capacity
    1250 VA

    DIMENSIONS

    CONNECTIONS

    VIDEOS

    DOWNLOADS

    User's manual
    Technical guide
    Dimensions
    Diagram connection
    Datasheet

    ACCESORIES

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