Brochure

© 1998 Square D All Rights Reserved
16
5/98
Size 6 Type SH and Size 7 Type SJ Contactors
and Starters
Size 6 Type SH and Size 7 Type SJ contactors and
starters have a DC coil operated by a solid state
rectifier circuit mounted on the device and
powered from an ac source. The Size 6 and 7 are
equipped as standard with a fused control circuit
transformer (Form F4T) rated 240/480-120 volts
60 hertz, 220/440-110 volts 50 hertz. The purpose
of this transformer is to provide an isolated 120
volts 60 hertz, 110 volts 50 hertz, supply for the
control circuit. Size 6 and 7 devices may be
ordered for other system voltages by specifying
the voltage and frequency desired.
Operation Rates
Continuous operation rate: 3 operations/minute
maximum. Jogging or Plugging Duty: 15
operations/minute – 3 minutes maximum.
Field conversion for other system voltages is
accomplished by one of the following methods,
NOT BY THE USUAL PRACTICE OF CHANGING
THE COIL:
1. If the factory wiring is indicated as being for
480 volts 60 hertz, 440 volts 50 hertz,
conversion to 240 volts 60 hertz, 220 volts 50
hertz, can be accomplished by reconnecting
the control transformer as illustrated on
instruction sheet supplied with the controller.
This is the same method that would be used
on Class 9070 control circuit transformers.
Conversion to any other voltage requires
replacement of the control transformer. For
other system voltages: i.e. 208, 277, 380, 600
volts, a new transformer with single voltage
primary must be selected from table at right.
Control transformer connections are
illustrated on the instruction sheet supplied
with the controller.
2. If the factory wiring is indicated as being for
any voltage other than 480 volts 60 hertz, 440
volts 50 hertz, conversion to any other voltage
requires replacement of the control
transformer. Refer to table at right.
3. The standard transformer supplied may be
used to power a maximum of five Class 9001
Type K illuminated operators powered with
transformer type light modules. When extra
capacity to power control relays or other
inductive loads is required, a second
transformer must be added. Extra capacity
can be purchased as Form F4T with additions
in 100 VA increments.
4. Standard controllers are wired for common
control and are not convertible for operation of
the control circuit from a separate source of
supply voltage. Controllers designated Form S
have special wiring designed for separate
control. They are furnished with an isolating
transformer, usually having a 120 volt primary
and 120 volt secondary, that must not be
bypassed. Form S controllers are not
convertible for operation on common control.
The tables below give the replacement
transformers for Type S Sizes 6 and 7 contactors
and starters. To change voltages on these
devices, coils are not changed, instead
transformers with the desired voltage are
changed.
Auxiliary Contacts
A N.O. holding circuit contact and a N.C. auxiliary
contact are provided as standard. The holding
circuit contact may or may not be required for
either 3-wire or 2-wire control. Size 6 and 7
devices have an additional N.C. auxiliary contact
which is wired in the coil control circuit. DO NOT
USE THIS N.C. CONTACT FOR ANY OTHER
PURPOSE.
Replacement Control Transformers for Type S
Size 6
Voltage
Class 9070 Type
60 Hertz 50 Hertz
240/480-120 220/440-110 EO3S2A
208-120 . . . EO3S2B
277-120 . . . EO3S2C
. . . 380-110 EO3S2D
600-120 550-110 EO3S2E
120-120 110-110 EO3S2F
240-120 220-110 EO3S2G
Replacement Control Transformers for Type S
Size 7
Voltage
Class 9070 Type
60 Hertz 50 Hertz
240/480-120 220/440-110 EO19S2A
208-120 . . . EO19S2B
277-120 . . . EO19S2C
. . . 380-110 EO19S2D
600-120 550-110 EO19S2E
120-120 110-110 EO19S2F
240-120 220-110 EO19S2G
Full Voltage Contactors and Starters — NEMA
Application Data – Class 8502, 8536
Size 6 Starter 8536 SH
Size 7 Starter 8536 SJ