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.