Electrical hook-up addendum, Microtrac digital system drives – Yaskawa DSD 406 User Manual
Page 110
Electrical Hook-up Addendum
MICROTRAC
DIGITAL
SYSTEM
DRIVES
The following additional information must be followed when performing Electrical Hook-Up of a
DSD 406 or DSD 412 drive, according to the procedures listed on pages 12-15 of technical manual
TM 6107, dated 4/15/94.
– Although the three phase input power line is fuse protected internal to the drive, it is recommended to provide
branch circuit protection by means of a circuit breaker in accordance with the National Electrical Code, local codes
and with a rating of not less than 5,000 rms Symmetrical Amperes and 600 Volts for 2 to 25 Hp rated drives or 10,000
rms Symmetrical Amperes and 600 Volts for 30 to 60 Hp rated drives.
– Electronic overload protection is provided as part of the standard DSD product. It is electronically timed and will
shut down the drive along a time/output current curve which provides shutdown at 60 seconds at 150% or 10
seconds at 200% of rated output current. An overload relay may be added external to the drive in accordance with
the National Electrical Code and local codes for additional protection.
– Main Circuit Input/Output Wire Sizing:
L1-3: Using 600V vinyl-sheathed wire per the following table.
Recommended Wire Gauge (Copper Only)
Torque
Drive Hp
60°C
75°C
(in-lbs)
2
14
14
35
3
14
14
35
5
14
14
35
7
8
10
40 - 35 *
10
8
10
40 - 35 *
15
6
8
45 - 40 *
20
6
8
45 - 40 *
25
4
4
45
30
4
4
45
40
1
150
50
1
150
60
1/0
180
75
3/0
250
100
3/0
250
125
250 MCM
325
150
600 MCM
375
200
600 MCM
375
* Torque per wire gauge.
Effective 02/06/95
PAGE 1
TM 6107 Addendum 1
© Copyright 1995 MagneTek, Inc.