3.6 Other
functions
3-5
Functions
Average
count
PMU1A
(Electric
power)
PMU2A
(Power
two-system)
EMU8A
(Pulse/temperature)
CTD8E
(CT
expansion)
{
{
×
{
O: With setting X: Without setting
• Average count is set to reduce dispersion in measurement values.
• When the average count is set to OFF, the instantaneous value updated every 100 ms is
the latest value.
• The following measurement values are averaged: active power, current, voltage, power
factor, and reactive power.
• Average value is calculated by the following formula.
(Average count - 1)
1
Value determined
previously X
average count
+ Value measured this
time X
Average count
= Value determined this time
• Setting range: OFF, 2, 4, 8, 16, 32, 64, 128, 256, 512, and 1024 (Initial value: OFF)
* Over/under voltage, over/under current, and reverse phase alarm function are not
affected.
Logging function
PMU1A
(Electric
power)
PMU2A
(Power
two-system)
EMU8A
(Pulse/temperature)
CTD8E
(CT
expansion)
{
{
{
×
O: With function
X: Without function
• Six data logging areas have been prepared. Each area can save 588 pieces of data (up to
6 items can be set.)
• Data logging cycle can be selected from among 5 minutes, 10 minutes, 30 minutes, 1 hour,
2 hours, 6 hours, 12 hours, and 24 hours, and is controlled by specifying 0:00 of the
internal clock in the main unit as the starting point.
Example
: When the logging function is set to 18:12, April 1, 2012 based on
the time of the internal clock in the main unit.
Every 5 min
: Saved at 18:15, April 1, 2012. Every 5 min after that
Every 10 min
: Saved at 18:20, April 1, 2012. Every 10 min after that
Every 30 min
: Saved at 18:30, April 1, 2012. Every 30 min after that
Every hour
: Saved at 19:00, April 1, 2012. Every hour after that
Every 2 hours
: Saved at 20:00, April 1, 2012. Every 2 hours after that
Every 6 hours
: Saved at 0:00, April 2, 2012. Every 6 hours after that
Every 12 hours
: Saved at 0:00, April 2, 2012. Every 12 hours after that
Every 24 hours
: Saved at 0:00, April 2, 2012. Every 24 hours after that
• For logging, after measurement data within a logging cycle is saved, data is reset to start
the measurement at the next cycle. For example, setting logging cycle of 5 min and
voltage MAX accumulates voltage MAX values every 5 min.
• The number of days for which log data can be saved differs depending on logging cycles.
Every 5 min
: 2 days + 1 hour
Every 10 min
: 4 days + 2 hours
Every 30 min
: 12 days + 6 hours
Every hour
: 24 days + 12 hours
Every 2 hours
: 49 days
Every 6 hours
: 147 days
Every 12 hours
: 294 days
Every 24 hours
: 588 days
•
For logging items that can be set, refer to Page A-15.
CT signal detection
PMU1A
(Electric
power)
PMU2A
(Power
two-system)
EMU8A
(Pulse/temperature)
CTD8E
(CT
expansion)
{
{
×
{
O: With function
X: Without function
• When the CT is connected, and the current whose measurement value is 2% of the
standard current is supplied continuously for 10 or more seconds, the targeted LED lights.
* Even when the low-cut function forcibly sets the current measurement value to 0, CT
signal detection turns LED ON, if the actually flowing current is more than 2% of the
standard current.
