63230-216-256A1
05/2007
LaVergne, TN, USA
Instruction Bulletin
CCA630 Connector for 1A/5A
Installation Sheet
Retain for future use.
Introduction
A
B
A current transformer (1A or 5A) is attached to the rear panel of a
Sepam™ relay via the the CCA630 connector. The CCA630 connector can
connect three current transformers to a Sepam relay.
C
Ia
Ib
The CCA630 connector contains interposing ring current transformers (CT)
with through primaries. When measuring phase and zero sequence
currents, these primaries provide impedance matching and isolation
between the 1A or 5A circuits and the Sepam relay.
Ic
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Only qualified electrical workers should install this equipment. Such
work should only be performed after reading this entire instruction set.
• NEVER work alone.
• Before performing visual inspections, tests, or maintenance on this
equipment, disconnect all sources of electric power. Assume that all
circuits are live until they have been completely deenergized, tested,
and tagged. Pay particular attention to the design of the power system.
Consider all sources of power, including the possibility of backfeeding.
• Always use a properly rated voltage sensing device to confirm that all
power is off.
• Disconnect the Sepam™ unit current inputs by unplugging the CCA630
connector. Do not disconnect the wires from it. The CCA630 connectors
ensure continuity of the current transformer secondary circuits.
• Short-circuit the current transformer secondary circuits before
disconnecting the wires connected to the CCA630 connector.
Failure to follow these instructions will result in death or
serious injury.
1
CCA630 Connector for 1A/5A
Instruction Bulletin
63230-216-256A1
05/2007
Connecting and Assembling the
CCA630 Connector
1. Open the two side shields (see Figure 1) for access to the connection
terminals. If necessary, the shields can be removed to simplify wiring.
2. Remove the bridging strap (see Figure 2) linking terminals 1, 2, and 3 if
the CCA630 is not the last connection in the CT circuit. If used, the
bridging strap provides a return line to the CTs.
NOTE: For more information, see the Sepam™ relay manuals:
— Sepam Series 20 User’s Manual 63230-216-208
— Sepam Series 40 User’s Manual 63230-216-219
— Sepam Series 80 Installation Manual 63230-216-229
3. Connect the wires using 0.16 in (4 mm) ring lugs. The connector
accommodates wires with cross-sections of AWG 16–10 (1.5–6 mm²).
4. If removed, replace and then close the side shields after wiring.
5. Pivot the connector toward the unit to plug it into the 9-pin
SUB-D connector.
6. Tighten the two CCA630 connector fastening screws on the rear panel
of the Sepam™ relay.
Figure 1:
CCA630 Connector with Side
Shield Open
Figure 2:
CCA630 Bridging Strap
Side Shield
Bridging Strap
Schneider Electric USA
295 Techpark Drive, Suite 100
LaVergne, TN 37086 USA
1-888-SquareD (1-888-778-2733)
www.us.SquareD.com
Electrical equipment should be installed, operated, serviced, and maintained only by
qualified personnel. No responsibility is assumed by Schneider Electric for any
consequences arising out of the use of this material.
© 2007 Schneider Electric. All Rights Reserved.