Deif MIB 8000 - About the MIB; Product Overview; Application; Connection

2. About the MIB
2.1 Product overview
2.1.1 Application
The MIB multi-instrument is a microprocessor-based measuring unit providing measurement of most electrical quantities on a 3-
phase electric energy distribution network. The measurements are shown on the built-in display.
The MIB is available in two versions:
• MIB 8000 (basic)
• MIB 8000C (with communication + optional I/O extension module)
True RMS values on all 3-phase network topologies are measured with/without neutral and with both balanced and unbalanced load.
A large number of standard analogue instruments can be replaced by the MIB in all electrical measuring applications. The MIB
contains all necessary measuring circuits and presents all values on a display with white backlight. The display has 4 digits
resolution for all measurements. The backlight on-time is selectable. Operating the MIB is very easy. It is a flexible and logical
measuring unit that enables the user to easily adapt the instrument to the individual application. Counter reset and change of
settings can be password protected.
The optional I/O extension module (only for the MIB 8000C) extends the number of I/O possibilities. Digital input, pulse counter,
pulse output, and SOE can be provided by the extension module.
2.1.2 Connection
The MIB can be used in almost all 3-phase network topologies with/without neutral and with both balanced and unbalanced load.
The voltage and current input wiring modes are set separately in the parameter setting process.
The voltage wiring mode can be:
• 3LN 3-phase 4-line Y
• 2LN 3-phase 4-line Y with 2 VT
• 1LN 1-phase 2-line
• 2LL 3-phase 3-line open delta
• 3LL 3-phase 3-line direct connection
The current input wiring mode can be:
• 3CT Unbalance system
• 2CT Unbalance system without N
• 1CT Balance system
Any voltage mode can be grouped with any of the current modes. The MIB is supplied configured in 3-phase 4-wire unbalanced
mode, that is to say, voltage wiring mode 3LN and current input mode 3CT (3W4).
DESIGNER'S HANDBOOK 4189320063D EN Page 6 of 23