Emc (Electromagnetic Compatibility) - Nidec Power Module Frame 12 Power Installation Manual

Safety information
4.11

EMC (Electromagnetic compatibility)

4.11.1 Immunity
This is a summary of the EMC performance of the drive. For full details, refer to the EMC Data Sheet which can be obtained from the supplier of the
drive.
Table 4-15 Immunity compliance
Standard Type of immunity
IEC 61000-4-2 Electrostatic discharge
Radio frequency
IEC 61000-4-3
radiated field
IEC 61000-4-4 Fast transient burst
IEC 61000-4-5 Surges
Conducted radio
IEC 61000-4-6
frequency
Voltage dips, short
IEC 61000-4-11 interruptions &
variations
Power frequency
IEC 61000-4-8
magnetic field
Generic immunity standard for the residential, commercial and light -
IEC 61000-6-1
industrial environment
IEC 61000-6-2 Generic immunity standard for the industrial environment
Product standard for adjustable speed power drive systems
IEC 61800-3
(immunity requirements)
1 Applies to ports where connections may exceed 30 m length. Special provisions may be required in some cases, see additional information below
2 Limited by test equipment capability
Unless stated otherwise, immunity is achieved without any additional measures such as filters or suppressors. To ensure correct operation, the wiring
guidelines specified in this Installation Guide must be followed. All inductive components such as relays, contactors, electromagnetic brakes must be
fitted with appropriate suppression.
4.11.2 Conducted Emissions
Radio frequency emission in the range from 150 kHz to 30 MHz is generated by the switching action of the main power devices (IGBTs) and is mainly
conducted out of the equipment through the electrical power wiring.
Switching frequency
Conducted emissions increase with switching frequency. The switching frequency should be chosen to optimise the balance between motor losses
and electromagnetic emissions. A switching frequency of 2 kHz to 3 kHz is the most appropriate for low conducted emissions.
Motor cable length
Conducted emissions increase with the length of the motor cable. The drive should be placed as close to the motor as possible and the length of the
motor cable should be kept to a minimum.
Screened motor cable
Use either four-core cable or shielded (screened) cable to connect the variable speed drive to the motor. Most types of shielded cable can be used
provided that the cable has an overall screen that is continuous for its entire length. For example, steel wire armoured cable is acceptable.
Ground (earth) connections
The motor cable ground conductor (or shield) must be terminated at the output terminal wiring plate.
Unidrive M Frame 12 Power Installation Guide
Issue Number: 1
Product information Mechanical installation
Test specification
6 kV contact discharge
8 kV air discharge
Prior to modulation:
10 V/m 80 - 1000 MHz
3 V/m 1.4 - 2.0 GHz
1 V/m 2.0 - 2.7 GHz
80 % AM (1 kHz) modulation
5 / 50 ns 2 kV transient at 5 kHz repetition frequency
via coupling clamp
5 / 50 ns, 2 kV transient at 5 kHz repetition frequency
by direct injection
Common mode 4 kV
1.2 / 50 μs wave shape
Differential mode 2 kV
Common mode 1 kV
10 V prior to modulation
0.15 - 80 MHz
80 % AM (1 kHz) modulation
All durations
1700 A/m RMS. 2400 A/m peak
(2.1 mT RMS 3 mT peak) continuous at 50 Hz
Electrical Installation
Application
Module enclosure Level 3 (industrial)
Module enclosure Level 3 (industrial)
Level 4
Control lines
(industrial harsh)
Power lines Level 3 (industrial)
AC supply lines: line to
Level 4
earth
AC supply lines: line to
Level 3
line
Control lines (Note:1)
Control and power lines Level 3 (industrial)
AC supply lines
Exceeds level 5
Module enclosure
(Note: 2)
Complies
Complies
Meets immunity requirements for first and second
environments
Technical data
Level
63