Emission And Immunity Levels; Control Connections - WEG CFW300 User Manual

3.3.1 Control Connections

1. Shielded output cables (motor cables) with the shield connected at both ends, motor and
inverter, with low-impedance connection for high frequency.
Maximum motor cable length and conducted and radiated emission levels according to
B3 on page 115.
2. Shielded control cables, and keep them away from other cables according to table 3.2 of
the user's manual.
3. Grounding of the inverter according to instructions of item
on page 17.
4. Grounded power supply.
5. Use short wiring to ground the external filter or inverter.
6. Ground the mounting plate using a flexible braid as short as possible. Flat conductors have
lower impedance at high frequencies.
7. Use sleeves for cable conduits whenever possible.

3.3.2 Emission and Immunity Levels

EMC Phenomenon
Emission:
Mains Terminal Disturbance Voltage
Frequency Range: 150 kHz to 30 MHz
Electromagnetic Radiation Disturbance
Frequency Range: 30 MHz to 1000 MHz
Immunity:
Electrostatic Discharge (ESD)
Fast Transient-Burst
Conducted Radio-Frequency
Common Mode
Surges
Radio-Frequency Electromagnetic
Field
Definition of Standard IEC/EM 61800-3: "Adjustable Speed Electrical Power Drives
Systems"
Environments:
„
First Environment: environments that include domestic installations, as well as establishments
directly connected without intermediate transformer to a low-voltage power supply network
which supplies buildings used for domestic purposes.
Table 3.3: Emission and immunity levels
Basic
Standard
IEC/EN 61800-3 It depends on the inverter model on the length of the
motor cable. Refer to
IEC 61000-4-2 4 kV for contact discharge and 8 kV for air discharge
IEC 61000-4-4 2 kV / 5 kHz (coupling capacitor) input cables
1 kV / 5 kHz control cables and remote HMI cables
2 kV / 5 kHz (coupling capacitor) motor cables
IEC 61000-4-6 0.15 to 80 MHz; 10 V; 80 % AM (1 kHz)
Motor, control and remote HMI cables
IEC 61000-4-5 1.2/50 μs, 8/20 μs
1 kV line-to-line coupling
2 kV line-to-ground coupling
IEC 61000-4-3 80 to 1000 MHz
10 V/m
80 % AM (1 kHz)
Installation and Connection
Item 3.2.4 Grounding Connections
Level
Table B3 on page 115
CFW300 | 19
Table