Delta SVG300A43A-11, Quick Star

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Product Installation
2-15
2-4 Wiring Installation
Note 1: Please follow local laws and regulations for the wiring electrical regulations of the Static VAR
Generator, Delta's Static VAR Generator will only take responsibility for those that comply
with local laws and regulations for the wiring electrical regulations, all others are not covered
by our warranty.
Note 2: For DC drives and loads, a 3-phase AC reactor (at least 3%), or an isolated adapter must be
installed between the Static VAR Generator's connection points and the load's AC input.
Unless the load is a PWM-type drive of the diode rectifier, and integrated into a DC bus
reactor, then it can be connected directly with the load's AC input terminals.
Note 3: Install appropriate overcurrent protection device on top of the mains input distribution panel,
the current capacity of the power cable and the system's required overload capacity should
be considered when installing. IEC 60947-2 thermal magnetic circuit breaker is generally
recommended when using a current of 125%.
Note 4: For IT power grid systems, a level 4 protection unit must be installed at the Static VAR
Generator's external input power distribution and external output power distribution.
Note 5: When wiring the Static VAR Generator, please be aware that the length of the power cable
must not exceed 200M. For other specifications such as the diameter of the cables, please
refer to Note 9.
Note 6: Before wiring, please check the position and status of the switches connecting the Static
VAR Generator and mains wirings. Make sure the switches are turned off, and attach
warnings to the switches, to prevent others from operating the switches. For details on the
maximum current range, please refer to 3-1 Specifications.
Note 7: [Ground protection wiring] When connecting the cabinet and the main grounding system, the
shortest wiring route must be used. The cross-sectional area of the ground wire should be
decided based on the level of AC power fault, the length of the power cable, and the type of
protection.
Please apply ground fault protection before wiring or turning on the power. Grounding circuits
is extremely important; grounding has 3 main purposes:
A. Electric Shock Prevention: When the insulating equipment deteriorates and becomes
damaged, it causes power leakage, rise in electric potential for non-charged
metallic parts, or the accumulation of charges in electrical equipment. Providing
a low impedance circuit and directing the accumulated charges to the ground,
so that the electric potential for non-charged metallic parts approaches the
ground electric potential, thus lowering the risk of personnel injuries due to
electric shocks.
B. Fire and Explosion Prevention: Provides enough current carrying capacity, so that faulty
circuit wouldn't generate sparks causing fires or explosions due to high
impedance leakage. This current carrying capacity must be within the
range allowed by the overcurrent protection equipment.
C. Protective Equipment Activation: Provides a low impedance circuit for faulty current to flow
through and activate overcurrent protection equipment or leakage circuit