Huawei SmartGuard-63A-S0 User Manual page 24

SmartGuard-63A-(S0, AUS0)
User Manual
Residential Load Features
1.
2.
Supported Earthing Systems
The SmartGuard supports TN-S, TN-C-S, and TT systems. In the TT power grid, the
N-to-PE voltage must be less than 30 V.
Figure 2-6 Earthing systems
Issue 03 (2023-12-27)
When the inverter is off-grid, the peak load current and duration shall not
exceed the off-grid running capability of the inverter. The stable running of
the system is affected by both the continuous load power and the inrush
current during load startup.
To ensure that loads can start and run properly, do not start the following
typical devices at the same time.
Table 2-4 Residential load features
Load Load
Feature
High startup Air conditioners, electric
current saws, and pumps
(motor)
Dynamic Washing machines, soy
power milk makers, rice cookers,
and electric ovens
High Induction cookers and
harmonic hair dryers
current
Copyright © Huawei Digital Power Technologies Co., Ltd.
2 Product Description
Cause
Load startup requires a high
startup current, which may
exceed the maximum output
current of the inverter.
Although the load power is
within the off-grid operating
power range of the inverter, the
loads may fail to start.
When the system is running
properly, the power of adjacent
running loads is fluctuating.
The non-sinusoidal current may
cause total harmonic distortion
of output voltage (THDv).
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