Rockwell Automation MinPak Plus DC Drives Kits - Manual (Page 16)

15
Remove resistor
Remove resistor
Figure 3.10 - 50ĆHz Resistor Removal
The general requirements for an isolation transformer
are:
D SingleĆphase
D 3Ć8% impedance
D Nonregulated
D Sinusoidal output
D 50/60 Hz, as required
D 150% overload for 1 minute (max.)
Refer also to Table 2.D for specific information on transĆ
former sizing requirements. In the Transformer column at
the right. maximum kVA and fullĆload kVA figures are
listed in relation to specific dĆc motor hp/VAC ratings.
Reliance Electric offers a number of isolation transformĆ
ers suitable for use with the Regenerative MinPak Plus
controller. (Refer to Table 3.C.)
3.11 HP/Current Jumper Ċ It is necessary to inspect
the Current Scaling/Horsepower Jumper on the RegulaĆ
tor Module to be sure that it is connected correctly for a
specific drive motor.
Step 1 Ċ On the drive motor, locate the nameplate. Note
the fullĆload current.
Step 2 Ċ If current is not shown on the nameplate, refer
to Table 3.D. Relate the left or center columns in the Table
with known motor data. Read across to the right column
marked Motor Current. This figure indicates the proper
jumper connection to make on the Module, where a corĆ
responding number is etched.
Table 3.C - RELIANCE ELECTRIC ISOLATION
TRANSFORMERS
HP kVA
PRIMARY
VAC
SECONDARY
VAC
ORDER
NUMBER:
1/4-1/3
1/4-1/3
0.75
0.75
230/460
575
115
115
77530Ć10S
Special Order
1/2
1/2
1.0
1.0
230/460
575
230
115
Special Order
Special Order
3/4
3/4
3/4
3/4
3/4
1.5
1.5
1.5
1.5
1.5
115
575
230/460
230/460
575
115
115
115
230
230
77530Ć12V
77530Ć11V
77530Ć10V
Special Order
Special Order
1
1
2.0
2.0
230/460
575
230
230
77530Ć8W
Special Order
1Ć1/2
1Ć1/2
3.0
3.0
230/460
575
230
230
77530Ć8X
Special Order
2-3
2-3
5.0
5.0
230/460
575
230
230
77530Ć8Y
77530Ć9Y
5
5
10.0
10.0
230/460
575
230
230
77530Ć8RC
77530Ć9RC