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8.5 Demand monitor and control specifications (common to 9, 10)
Demand type
・
Peak demand
・
IEC61557-12 demand
1. Sliding block interval
2. Fixed block interval
3. Current demand
・
30-min demand (set with setting mode)
Power input type
Current transformer input (IEC demand /30-min demand))
Integral pulse input (only 30-min demand)
(set with setting mode)
Demand span IEC demand
1 to 60 min. (set with setting mode)
30-min demand
30 min. (fixed)
Measurement item
Present demand,
Estimated demand (only 30-min demand)
Demand calculate method *1
Additional method / Average method
(set with setting mode)
Data update cycle
1 min.
Demand stand-by time (mask time) *1 1 to 30 min. (set with setting mode)
Display
IEC demand
Present demand (active/ reactive/ apparent/
active(export)/ reactive(export)/ current)
30-min demand
Power demand (active), Estimated demand,
Demand target value, Ratio of estimated demand,
Current demand, Monthly max. demand, Max. demand
Saved data
Monthly max. demand 12 records (12-month),
Max.demand
Time span synchronized method
Clock synchronized (Pulse input to IN1)
(set with setting mode)
Synchronized
signal input
<IN1>
Input terminal
IN1
Input method
Non-voltage a contact or open-collector
Pulse width
50ms or more
Operating
voltage/ current
5VDC 10mA
Signal common
Common (IN2; common to pulse input)
Pulse input
<IN2>
Input terminal
IN2
Input method
Non-voltage a contact or open-collector
Input signal
50,000 / 2,000 [pulse/kWh]
Pulse rate
0.001 to 100.000 kWh/pulse
Input pulse
2000Hz width
0.25ms or more
interval
0.5ms or more (OFF: 0.25ms or more)
30Hz
Width
16.7ms or more
interval
33.4ms or more (OFF: 16.7ms or more)
Operating
voltage/ current
5VDC 10mA
Signal common
Common (IN1; common to clock synchronized input)
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