Vertiv Liebert LDMF - PM4 Large Interface Board (PLIB); Table 1 CT Matrix for the Liebert LDMF

Vertiv™ | Liebert® LDMF™ Distribution Monitoring User Manual | 5
The 18 large branch CT inputs can also be used to monitor up to three subfeed circuit breakers.
This is configured using the configuration tool (see 5.5 - Using the Configuration Tool). The CTs
from the B side of the PIB are cross-configured to the A side so that the three subfeeds appear
within the A-side panelboard register space. The 18 large branch breakers require CT’s with 1A
secondary.
3.3 PM4 Large Interface Board (PLIB)
WARNING
Before connecting a large CT to the PIB, note the CT MUST have a 1A secondary.
Connecting
anything other than a 1A secondary CT will damage the PIB and the CT.
To ensure the proper current ratio and accuracy, the CTs should be purchased through
Vertiv. See Table 1 for details. Contact your local Vertiv representative or call Vertiv
Support at 800-543-2378.
Table 1 CT matrix for the Liebert LDMF
Part Number Description Phase CT Ground CT Neutral CT
539217G1-L 3-pole 0-100A Subfeed Breaker 5W CT Kit 200:1 100:1 200:1
539217G2-L 3-pole 125-225A Subfeed Breaker 5W CT Kit 500:1 100:1 500:1
539217G3-L 3-pole 250-400A Subfeed Breaker 5W CT Kit 1000:1 100:1 1000:1
539217G12-L 3-pole 125-225A Subfeed Breaker 4W CT Kit 500:1 — 500:1
539217G13-L 3-pole 250-400A Subfeed Breaker 4W CT Kit 1000:1 — 1000:1
539217G4-L 3-pole 0-100A I-Line Breaker 3W CT Kit 47" Frame 200:1 — —
539217G5-L 3-pole 125-225A I-Line Breaker 3W CT Kit 47" Frame 500:1 — —
539217G6-L 3-pole 250-400A I-Line Breaker 3W CT Kit 47" Frame 1000:1 — —
539217G7-L 1-pole 0-100A Branch Breaker CT Kit 200:1 — —