28
CET Electric Technology
Single Panel Mode I
with
Two Mains
Application
:
This configuration applies to systems with
Two Mains
that are controlled by an ATS (Automatic Transfer
Switch) or STS (Static Transfer Switch) such that only one Mains is active at a time.
V1 = Mains-I Voltage Inputs
I1 = Mains-I Current Inputs
V2 = Mains-II Voltage Inputs (Not Used)
I2 = Mains-II Current Inputs
Power Calculation:
Mains-I Power = V1 × I1 (Wye, Delta or 1P3W)
Mains-II Power = V1 × I2 (Wye, Delta or 1P3W)
Branch Power = V1 × Branch Current A/B/C/D
Applicable Alarms:
Global
Mains-I
Mains-II
Voltage-I
●
○
○
Voltage-II
●
○
○
Current/Power-I
●
○
○
Current/Power-II
●
○
○
CT Strip A/B
●
○
○
CT Strip C/D
●
○
○
Frequency
●
○
○
DI
●
○
○
RTD
●
○
○
Single Panel Mode II
Application
:
This configuration applies to systems with a
Single Mains (Mains-I)
only. However, Mains-II can be used
to measure the electrical parameters before the Delta-Wye Isolation Transformer.
Voltage-II and Current-II do not need to be connected if the PDU does not have an Isolation Transformer.
This would be equivalent to the Single Panel Mode I with One Mains Only.
V1 = Mains-I Voltage Inputs
I1 = Mains-I Current Inputs
V2 = Mains-II Voltage Inputs
I2 = Mains-II Current Inputs
Power Calculation
Mains-I Power = V1 × I1 (Wye)
Mains-II Power = V2 × I2 (Delta)
Branch Power = V1 × Branch Current A/B/C/D
Applicable Alarms
Global
Mains-I
Mains-II
Voltage-I
●
○
○
Voltage-II
●
○
○
Current/Power-I
●
○
○
Current/Power-II
●
○
○
CT Strip A/B
●
○
○
CT Strip C/D
●
○
○
Frequency
●
○
○
DI
●
○
○
RTD
●
○
○