Instructions

10
Terminal Structures
The terminal structures according to the models are described in this section:
Structure of the MPR-27S-23 Terminal:
Current Terminals: K1, L1, K2, L2, K3, L3
An external current transformer must be used for the 3-phase system connection to
these terminals where the current up to 5A can be input.
Supply Terminals: A1, A2
Please, apply 85-300 VAC/DC supply connection through these terminals.
Voltage Terminals: N, L1, L2, L3
Please, apply 3-phase voltage connection through these terminals.
Digital Input Terminals: INC, IN1, IN2
As the INC terminal will be the joint point (reference), the IN1 and IN2 inputs are used
as digital inputs between 5-30 VDC. Inputs have 1 kV insulation level.
Digital Output Terminals: OC, O1, O2