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

    DIMENSIONS

    CONNECTIONS

    VIDEOS

    DOWNLOADS

    User's manual
    Technical guide
    Dimensions
    Diagram connection
    Datasheet

    ACCESORIES

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