Installation
Mounting the MD-P1 and MD-P1D Power Meters
17
Siemens Industry, Inc.
125-201
09/30/2019
Mounting the MD-P1 and MD-P1D Power Meters
The MD-P1 and MD-P1D Power Meters must be installed in an approved electrical
panel or enclosure using proper installation practices according to the NEC and local
electrical codes.
1.
To mount the meter, use the two tabs provided at each end of the case or mount
on a 35 mm Top Hat mounting DIN rail (EN 50022).
Figure 5: Mounting Options.
2.
Securely mount the meter near a dedicated circuit disconnect breaker.
Connecting the MD-P1 and MD-P1D Power Meters
All wiring added must be rated for 600V CAT III applications.
The MD-P1 and MD-P1D Power Meters have the following wiring connections:
● An RS-485 connection with plus, minus and shield for the P1 network wiring.
● Four connections for voltage sources (L1, L2, L3, and Neutral). These connections
are on the red wiring connector.
The MD-P1 and MD-P1D Power Meters are self-powered from L1 and L2.
– Up to three current transducers (CTs) can be used with the three green 3-input
wiring connectors (one CT per each green connector).
– Digital output port. The port can be used to output kWh, kVARh, or kVAh
pulses to external devices, or to toggle on and off to control a remote device or
relay.
– USB port. This is located on the side of the meter and can be connected to a
PC Service Tool with a USB type AB cable.