Installation Instructions

Installation Instructions
Document No. 129-556
September 10, 2014
Connecting a Midi or Mini Hinged Split-
Core Current Transformer to a Load
Item Number 129-556, Rev. CA Page 1 of 2
Product Description
This is a step-by-step guide to connecting Siemens
Midi or Mini Hinged Split-Core Current Transformers
(CTs) to a load.
Contents
1 Hinged Split-Core Transformer
Product Numbers
SCT-HSC-0050-U Mini Hinged Split-Core CT
0.4” Opening (10 mm), 50A
SCT-HMC-0100-U Midi Hinged Split-Core CT
1" Opening, 100A
SCT-HMC-0200-U Midi Hinged Split-Core CT
1" Opening, 200A
Warning/Caution Notations
WARNING:
Personal injury or loss of life
may occur if you do not follow
the procedures as specified.
CAUTION:
Equipment damage or loss of
data may occur if you do not
follow the procedures as
specified.
WARNING:
All work should be performed by a qualified
electrician using proper safety equipment.
Equipment is protected throughout by double
insulation (IEC 536 Class III).
Required Tools
Small flat-blade screwdriver
Expected Installation Time
15 minutes
Prerequisites
None
Installation
1. Use a small, flat-blade screwdriver to open the
CT by undoing the latch and pulling the CT
open. See Figure 1.
Figure 1. Open the CT.
2. Install the CT around the load conductor to be
measured. Verify that the arrow on the black
connector points toward load. See Figure 2.
NOTE: Ensure that the maximum current of the
conductor does not exceed the CT's
rating.
Figure 2. Install CT around Conductor. Verify that the
arrow on the CT points toward the load.