54
Max.
Max.
Max.
Max. Demand:
Demand:
Demand:
Demand:
In nonvolatile memory, PMAC770 maintains a running maximum for
power and current demand values with date & time stamp, called “Max. Demand”.
User can read the demand value from LCD or RS485 communication.
Below figure is a sample of Rolling Block mode:
(Demand intervals is 10 mins, subintervals is 2 mins.)
9.
9.
9.
9.9
9
9
9 Phase
Phase
Phase
Phase sequence
sequence
sequence
sequence detect
detect
detect
detect
PMAC770 can detect the voltage phase sequence. After input 3-phase voltage and
3-phase current signals to the meter, users can press the button to display real-time
phase voltage or line voltage and see the present phase sequence.
Correct connection!
HRW Limited
Ph +852 2546 7402 - Fax +852 2546 7403 - [email protected] - www.hrw.hk