MEG-1000, Isolation meter

Description

• The MEG-S unit has a backlit LCD display and is used to take insulation (MΩ), continuity (Ω), and AC voltage readings.
• Instantaneous operation with a button press. For continuous readings of MΩ or Ω, the unit has a built-in timer with automatic disconnection after 3 to 5 minutes to save battery.
• LED indicator (red) for checking insulation and continuity.
• High-performance and accurate DC-DC converter.
• Includes a carrying case.
• Specially designed to measure the insulating resistance of domestic electrical appliances, energy distribution lines, and installations.
• Includes cable for the conductor insulation test.
• Includes cable for the insulation test against the appliance body.

Applications

The MEG-1000 measures and controls the insulation resistance between phase and earth in a neutral insulated or impedance line (IT), using relays. The insulation resistance is displayed on a galvanometric indicator located on the front of the unit. To carry out the measurements, the unit applies a continuous voltage of 24 V between the phase and earth, measuring the leakage current through the network insulation resistors, which determines the insulation resistance.

The unit has two timed output relays. One relay acts as a maximum trigger, activating when the insulation resistance is lower than a predetermined value. In both relays, the trip point and connection delay time can be adjusted with potentiometers on the back of the unit.

When the insulation resistance is within the maximum and minimum values set with the potentiometers, the "NORMAL" LED on the front panel will light up. If the resistance is outside these defined margins, either too high or too low, the "ALARM" LED will be lit on the front panel.