63230-216-252A1
05/2007
LaVergne, TN, USA
Instruction Bulletin
CSH30 Interposing Ring Current Transformer (CT)
Install Sheet
Retain for future use.
The CSH30 interposing ring current transformer (CT) serves as an interface
when measuring residual current (Ir) using 1A or 5A current transformers.
E44717
E40468
Function
CSH30 Interposing Ring
Vertical Assembly
CSH30 Interposing Ring
Horizontal Assembly
Characteristics
Weight
0.265 lb (0.12 kg)
Assembly
On symmetrical DIN rail
DE80023
Mounted in vertical or horizontal
position
in.
(mm)
2 Ø 0.18
(2 Ø 4.5)
Ø 1.18
(Ø 30)
1.97
(50)
3.23
(82)
0.16
(4)
0.63
(16)
2 Ø 0.18
(2 Ø 4.5)
0.20
(5)
2.36
(60)
0.31
(8)
1.14
(29)
1
CSH30 Interposing Ring Current Transformer (CT) Install Sheet
Instruction Bulletin
Connection
63230-216-252A1
05/2007
The CSH30 is adapted for the type of current transformer by the number of
turns of the secondary wiring through the CSH30 interposing ring CT, as
shown below:
5A rating: 4 turns
PE50034
PE50033
1A rating: 2 turns
1A secondary circuit connection
5A secondary circuit connection
1. Plug in the CSH30 secondary connector.
2. Insert the transformer secondary wire through the CSH30 interposing
ring CT four times for a 5A rated system, or two times for a 1A rated
system.
Connecting to Sepam™ Series 20 and Series 40
To Ir input, on relay connector A , terminals 18 and 19 (shielding). See
Sepam Series 80 Installation Manual for details.
Connecting to Sepam™ Series 80
• To Ir input, on relay connector E , terminals 14 and 15 (shielding)
DE80125
c
b
a
•
Shielding
To I'r input, on relay connector E , terminals 17 and 18 (shielding)
Recommended Cable Dimensions
Sheathed cable, shielded by tinned copper braid
Cable cross-section
Minimum: AWG 18 (0.93 mm²)
Maximum: AWG 12 (2.5 mm²)
DE80126
turns
turns
a
b
c
CCA634
Ia
Ib
Ic
Resistance per unit length
less than 100 mΩ/m (30.5 mΩ/ft)
Minimum dielectric strength
1000 V (700 Vrms)
Maximum length
6.6 ft (2 m)
The CSH30 interposing ring CT must be installed near Sepam. The link to
the CSH30 should be less than 6.6 feet (2 meters).
Flatten the connection cable against the metal frames of the cubicle. The
connection cable shielding is grounded in Sepam.
NOTE: Do not ground the cable by any other means.
E
turns
turns
Schneider Electric USA
295 Tech Park 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.