Monitoring Relays

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Monitoring Relays

What is a Monitoring Relay?

We are Carlo Gavazzi Monitoring Relay Suppliers, Distributors & Importers in Mumbai, Gujarat, India. A Monitoring Relay is essentially an electrically operated device applied in electric installations to supervise the level of current, voltage, phase sequences, and other parameters for protection and economization purposes. The basic task that it undertakes continuously by observing these parameters is protection against damage from abnormalities such as overcurrents, undercurrents, voltage dips, or surges to electrical equipment.

Monitoring Relays are designed to ensure the safety and efficiency of your electrical systems by providing accurate over- or under-current monitoring. Available in two versatile types—DIB01 for DIN-rail mounting and PIB01 for plug-in modules—these relays cater to various industrial applications with ease.

Carlo Gavazzi Monitoring Relays

Types of Monitoring Relays

  • DIB01: Designed for DIN-rail mounting, this type provides direct current measurement or via a current transformer. Suitable for installations requiring compact and easy-to-mount solutions.
  • PIB01: A plug-in module variant that offers similar monitoring capabilities as the DIB01, with the added flexibility of quick module replacements and adjustments

Product Description

The DIB01 and PIB01 are precise TRMS AC/DC monitoring relays designed for overcurrent or undercurrent detection, selectable via a DIP switch. They can measure current directly or through a current transformer. Thanks to the built-in latch function, the relay output can maintain its ON position. Additionally, an inhibit function is available to prevent relay operation during undesirable conditions, such as maintenance or transitions. The relays feature LED indicators that display the status of the alarm and output relay. With the integrated shunt, they can monitor loads up to 10 A AC/DC.

Key Features:

  • Current Measurement: Through internal shunt
  • Range Selection: Measuring range selection via DIP switches
  • Measuring Ranges: From 0.1 mA to 10 A AC/DC
  • Adjustable Current: Set on a relative scale
  • Adjustable Hysteresis: Set on a relative scale
  • Delay Function: Adjustable from 0.1 to 30 seconds
  • Latching/Inhibit Function: Programmable latching or inhibiting at set level
  • Output: 8 A SPDT relay, selectable as Normally Open (N.O.) or Normally Closed (N.C.)

Installation and Design:

  • Mounting: DIN-rail mounting by DIN/EN/EC 60715 (DIB01) or plug-in module (PIB01)
  • Housing: 22.5 mm Euronorm housing (DIB01) or 36 mm plug-in module (PIB01)

Indications:

  • LED Indication: For relay status, alarm, and power supply ON
  • Power Supply: Galvanically separated for safety

Ordering Key:

  • Housing: DIB01/PIB01
  • Function: Over or Under Current Monitoring
  • Item Number: Dependent on model and measuring range
  • Output: SPDT relay
  • Power Supply: 24 to 48 VAC/DC or 115/230 VAC
  • Measuring Range: 0.1 mA to 10 A AC/DC

Type Selection:

  • Mounting: DIN-rail or plug-in
  • Output: SPDT relay
  • Measuring Range:
    1. 0.1 to 5 mA AC/DC
    2. 1 to 50 mA AC/DC
    3. 10 to 500 mA AC/DC
    4. 0.1 to 5 A AC/DC
    5. 1 to 10 A AC/DC
  • Supply:
    1. 24 to 48 VAC/DC (D48)
    2. 115/230 VAC (B23)

Input Specifications:

  • DIB01/PIB01 Terminals: Y1, Y2, 5, 7
  • Selectable by DIP switch:
    1. 0.1 to 1 mA AC/DC to 1 to 10 A AC/DC
    2. Internal resistance and maximum current vary by range.
  • Max. Current for 1 s: Up to 50 A for 10 A range

Output Specifications:

  • Rated Insulation Voltage: 250 VAC
  • Contact Ratings:
    1. Resistive Loads AC 1: 8 A @ 250 VAC
    2. DC 12: 5 A @ 24 VDC
    3. Small Inductive Loads AC 15: 2.5 A @ 250 VAC
    4. DC 13: 2.5 A @ 24 VDC
  • Mechanical Life: ≥ 30 x 10⁶ operations
  • Electrical Life: ≥ 50 x 10³ operations at 8 A, 250 V
  • Dielectric Strength: ≥ 2 kVAC (rms)
  • Rated Impulse Withstand Voltage: 4 kV (1.2/50 µs)

Supply Specifications:

  • Power Supply Terminals: DIB01: A1, A2 or A3, A2 | PIB01: 2, 10 or 11, 10
  • Rated operational voltage:
    1. D48: 24 to 48 VAC/DC ± 15%
    2. B23: 115/230 VAC ± 15%
  • Power ON Delay: 1 s ± 0.5 s or 6 s ± 0.5 s
  • Reaction Time: < 100 ms
  • Alarm ON/OFF Delay: < 100 ms

General Specifications:

  • Indications:
    1. Power Supply ON: Green LED
    2. Alarm ON: Red LED (flashing 2 Hz during delay)
    3. Output Relay ON: Yellow LED
    4. Protection Degree: IP 20
    5. Pollution Degree: 2
    6. Operating Temperature: -20 to 60°C
    7. Storage Temperature: -30 to 80°C

Mode of Operation:

  • TRMS AC/DC Monitoring: Over or under current through internal shunt.
  • Latch Function: Relay output maintained in the ON position when the measured value exceeds or drops below the set level for more than the delay time.
  • Inhibit Function: Used to avoid relay operation during maintenance or transitions.
  • LED Indicators: Indicate alarm and output relay status.

Function/Range/Level and Time Delay Setting:

  • Upper Knob: Adjust hysteresis (0 to 30% on set value).
  • Center Knob: Adjust current level (10 to 110% on full scale).
  • Lower Knob: Set delay on alarm time (0.1 to 30 s).

Technical Specifications

  • Measuring Ranges:
    1. DIB01/PIB01: Ranges from 0.1 mA to 10 A AC/DC.
    2. Selectable Ranges via DIP Switches:
      1. 0.1 to 1 mA, 1 to 10 mA, 10 to 100 mA, 1 to 10 A, etc.
  • Power Supply:
    1. 24 to 48 VAC/DC ± 15% or 115/230 VAC ± 15%, with options for insulation and protection against overvoltage.
  • Environmental Conditions:
    1. Operating temperature: -20°C to 60°C.
    2. Protection degree: IP20, suitable for indoor use.
  • Physical Specifications:
    1. Housing: Polyamide or phenylene ether with polystyrene.
    2. Dimensions: 22.5 x 80 x 99.5 mm (DIB01) or 36 x 80 x 94 mm (PIB01).
  • Compliance and Standards:
    1. Conforms to IEC 60715, EN 60255-6, and EMC standards, ensuring reliability and safety.

Importance

  • Protection: Monitors electrical parameters to protect equipment from faults.
  • Flexibility: Adjustable settings for various applications.
  • Reliability: Built-in latching and inhibit functions prevent undesired operations
    • during maintenance.
  • Ease of Installation: Compatible with standard DIN rails and plug-in modules for easy installation.
  • Cost-effective: Saves from expensive repairs and replacements by mitigating the damages caused by electrical anomalies.

Features

  • True RMS AC/DC Current Monitoring: Able to monitor over or under current conditions.
  • Adjustable Parameters: Settings for current range, hysteresis, and delay are adjustable using DIP switches and knobs.
  • Internal Shunt: Measures current directly up to 10 A AC/DC.
  • LED indications: Provides visual status for relay operation, alarms, and power supply.
  • Selectable Functions: Overcurrent, undercurrent, latching, and inhibit functions.
  • Output Relay: 8 A SPDT, selectable normally de-energized or energized.