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Ceiec Electric Technology
4.5.2 Unbalance
The PMC-630E can measure Voltage and Current Unbalances based on Sequence Components. The
calculation method of Voltage and Current Unbalances is listed below:
100%,
V
V
Unblance
Voltage
1
2
where V
1
is Positive Sequence Voltage and V
2
is Negative Sequence Voltage
100%
I
I
Unblance
Current
1
2
where I
1
is Positive Sequence Current and I
2
is Negative Sequence Current
4.5.3 Transient Setpoint
The PMC-630E provides Transient Capture capability for detecting voltage disturbances. The
programming of the Transient setpoint is only supported over communications. The Transient
setpoint provides the following setup parameters:
1)
Transient Enable
:
Disabled / Enable
2)
Transient Limit
:
0.05xVLL
nominal
to 5.00xVLL
nominal
3)
Transient Trigger 1/2:
WR 1
4.6 On-board Web Server
The PMC-630E's Ethernet port comes with an on-board web server which provides quick and easy
access to the basic measurements and device information via a web browser like Microsoft's Internet
Explorer. The PMC-630E currently comes with only one web page as displayed in Figure 4-2. The
PMC-630E’s web server supports simultaneous access from two web clients.
To view the PMC-630E's on-board Web Page:
1)
Make sure that the web client computer and the PMC-630E are in the same subnet.
2)
Enter the IP Address of the PMC-630E in the Address input box of the Internet Explorer and
then press <Enter>.
3)
The PMC-630E’s web page appears as follows.
