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4.1.5 About Wattage Limiter
The wattage limiter operates when trying to output the power exceeding the rated power. When the
wattage limiter operates, the output voltage is suppressed until the active power per phase is the
value in Table 4-1 (reference value). While the limiter is working, icon
LIMIT LED illuminates.
[DP series Type R only]
While the reverse power flow is occurring, the wattage limiter does not operate. However, icon
is displayed and the LIMIT LED lights to notify user when the output power exceeds the
value of wattage limiter (see Table 4-1).
When the reverse power flow satisfies one of the following condition, icon
the LIMIT LED flashes.
The reverse power exceeding 40% of the electric power capacity has lasted for 3 minutes.
The reverse power exceeding 40% of the electric power capacity has occupied 20% in duty
cycle.
CAUTION
[DP series Type R only] If ambient temperature is 30°C or higher, do not let the reverse power
flow occur while the LIMIT LED flashing.
[DP series Type R only] Output may be shut off to protect the inside of this product if the
reverse power flow exceeds specifications. Be aware that shut off in the reverse power flow may
cause voltage rise of the load.
Table 4-1 Wattage Limiter Value per Phase (Reference value, Unit: W)
Rated output
per phase
Note: Power input 100 V system is for single-phase input 170 V or less, 200 V system is for
single-phase input more than 170 V or three-phase three-wire input or three-phase four-wire
input.
Note: In DP series Type R, the rated output per phase is 9.0 kVA (Single-phase model), 4.5 kVA
(Single-phase three wire model), or 3.0 kVA (Three-phase model) at maximum.
DP Series/DP Series Type R
Single-phase model
Single-phase three-wire model
Power Input
100 V system 200 V system 100 V system 200 V system
4.1 Using Limiter, Setting Limiter
Three-phase model
Power Input
Power Input
100 V system 200 V system
is displayed and
is displayed and
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