YASKAWA A1000 Installation Guide

i.2 General Safety
YASKAWA ELECTRIC TOEP C710616 50B YASKAWA AC Drive - A1000 6-Phase/12-Pulse Input Installation Guide 7
i.2 General Safety
 General Application Precautions
 Selection
Installing a Transformer
Install a 6-Phase/12-Pulse isolation transformer with each of the output windings phase shifted by 30 electrical degrees or
install a Hybrid 6-Phase topology on the power supply.
Installing a Reactor
Install an AC reactor in following situations:
• to suppress harmonic current
• to smooth peak current that results form capacitor switching.
• when the power supply capacity (kVA) is 10 times or more greater than the drive capacity according to Figure i.1.
• when the drive is running from a power supply system with thyristor converters.
Figure i.1
Figure i.1 Installing a Reactor
W ARNING
Fire Hazard - Drive Short-Circuit Current Rating
Install adequate branch circuit protection according to applicable local codes and this manual.
Failure to comply could result in fire and damage to the A1000 drive or injury to personnel.
The device is suitable for use on a circuit capable of delivering not more than 100,000 RMS symmetrical amperes,
480 Vac maximum (400 V class), when protected by branch circuit protection devices specified in this manual.
4000
600
0
60 400
Drive Capacity (kVA)
Power Supply
Capacity (kVA)
Power supply harmonics
reactor required
Reactor
unnecessary

YASKAWA A1000 Specifications

General

Type	AC Drive
Series	A1000
Input Voltage	200-240V, 380-480V
Frequency Range	0-400 Hz
Horsepower Range	0.5 to 1000 HP
Power Range	0.4 to 630 kW
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Braking	Dynamic Braking
Communication	Modbus
Safety	Safe Torque Off (STO)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Operating Temperature	-10 to +50°C
Storage Temperature	-20 to 60°C
Humidity	5 to 95% RH (non-condensing)
Enclosure	IP20