2-25
H
Wiring on the Input Side of the Main Circuit
D
Installing a Molded-case Circuit Breaker
Always connect the power input terminals (R/L1, S/L2, and T/L3) and power supply via a
molded case circuit breaker (MCCB) suitable to the Inverter.
·
Install one wiring circuit breaker per Inverter.
·
Choose an MCCB with a capacity of 1.5 to 2 times the Inverter’s rated current.
·
For the MCCB’s time characteristics, be sure to consider the Inverter’s overload
protection (one minute at 150% of the rated output current).
·
If the MCCB is to be used in common among multiple Inverters, or other devices, set up
a sequence such that the power supply will be turned OFF by a fault output, as shown
in the following diagram.
3-phase/
Single-phase
200 VAC
3-phase
400 VAC
Power
supply
Inverter
Fault output
(NC)
(see
note)
Note
Use a 400/200 V transformer for a 400-V model.
D
Installing a Ground Fault Interrupter
Inverter outputs use high-speed switching, so high-frequency leakage current is gener-
ated.
In general, a leakage current of approximately 100 mA will occur for each Inverter (when
the power cable is 1 m) and approximately 5 mA for each additional meter of power
cable.
Therefore, at the power supply input area, use a special-purpose breaker for Inverters,
which detects only the leakage current in the frequency range that is hazardous to
humans and excludes high-frequency leakage current.
Design
Chapter 2
Summary of Contents for SYSDRIVE 3G3MV A2002
Page 1: ...USER S MANUAL SYSDRIVE 3G3MV Multi function Compact Inverter Cat No I527 E2 02...
Page 15: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1 3 New Features 1...
Page 24: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 89: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 286: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9...
Page 311: ...Chapter 10 List of Parameters 10...
Page 342: ...Chapter 11 Using the Inverter for a Motor 11...
Page 348: ...Appendix A Standard Models...