Connection diagrams – Howard SVR1 Regulator User Manual
Page 9
Switch-Pad™
SVR-1 Step Voltage Regulator
Document No. 2.4.114
Revision: 03
Issued: March, 2012
9
Copyright © 2012 Howard Industries, Inc.
CONNECTION DIAGRAMS
*NOTE: Individual bypass and disconnect switches are shown in the diagrams above. Combination switches are avail-
able that perform disconnecting and bypass operations sequentially.
FIGURE 7:
Three SVR-1 regulators wye connected in a three-phase four-wire system.
Series Arrester
Shunt
Arrester
S
L
SL
SL
SL
S
S
L
L
SOUR
CE
LO
AD
1
2
3
Disconnects
Bypass Switch*
Bypass Switch*
A
B
C
N
Bypass Switch*
FIGURE 8:
Three SVR-1 regulators delta connected in a three-phase three-wire system.
Bypass Switch*
Bypass Switch*
Bypass Switch*
SOUR
CE AB
C
LO
AD
Shunt
Arrester
S
S
S
L
L
L
SL
SL
SL
Series
Arrester
3
2
FIGURE 5:
Bypass Switch
Neutral
LO
AD
Disconnects
Series Arrester
Shunt
Arrester
S
SL
FIGURE 6:
Two SVR-1 regulators in an open delta three-
phase system.
Bypass Switch
Disconnects
A
B
C
SOUR
CE
Bypass Switch
1
2
S
S
L
L
SL
SL
Series Arrester
LO
AD
Disconnects