Siemens Building Technologies Current Transformers Specifications

Technical Specification Sheet

Dimensions in Inches (cm)

A B C D E

Split-Core Current Transformers

Small, Medium and Large Sizes

Description

Siemens Split-Core Current Transformers (CTs)
provide linear output voltage that is directly
proportional to the input current. These transformers
are safely and easily installed over existing electrical
power lines without disconnecting the lines or
interrupting service.

Siemens energy monitoring components are used for a
variety of applications including building automation,
tenant submetering, performance verification, energy
management, and new technology assessment. These
devices are targeted for use with the Siemens MD
Series Power Meters.

Features

• Available wit h three window sizes:
Small: 0.75” (1.9 cm)
Medium: 1.25" (3.2 cm)
Large: 2.0" (5.1 cm)

• Available in six current ranges:
Model Current Range
50A, Small 5 to 65A AC
100A, Small 2 to 130A AC

CT Size Part Number

Small

Medium

Large

Table 1. CT Dimensions.

SCT-SCS-0050-U
SCT-SCS-0100-U

SCT-SCM-0100-U
SCT-SCM-0200-U
SCT-SCM-0400-U
SCT-SCM-0600-U

SCT-SCL-0600-U
SCT-SCL-1000-U

Document No. 149-406

August 27, 2014

2.0

2.1

5.0

0.6

(1.6)

1.00
(2.5)

1.2

(3.1)

(5.1)

3.25
(8.3)

4.8

(12.1)

(5.4)

3.35
(8.5)

(12.7)

0.75
(1.9)

1.25
(3.2)

2.0

(5.1)

0.75
(1.9)

1.25
(3.2)

2.0

(5.1)

100A, Medium 5 to 130A AC
200A, Medium 4 to 260A AC
400A, Medium 8 to 520A AC
600A, Medium 12 to 780A AC

600A, Large 30 to 780A AC
1000A, Large 20 to 1300A AC

• Output: 333 mV at rated current

Siemens Industry, Inc.

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Document No. 149-406

Specifications

SCT-SCS-0050-U

SCT-SCS-0100-U

SCT-SCM-0100-U

SCT-SCM-0200-U

SCT-SCM-0400-U1

SCT-SCM-0600-U

SCT-SCL-0600-U2

SCT-SCL-1000-U

Electrical Output Signal 333 mV at rated current

Wire Colors White = (+) Hi, positive
Black = (-) Low, neg ative

Frequency Range 50 Hz to 400 Hz
Phasing Orientation Arrow points towards load
Ratio Error <1% at rated current (typical)
Phase Error <2° at rated current (typical)

Mechanical Case Material Epoxy encapsulated housing

Leads 8 feet (2.7 m), twisted pair, 20 AWG
Operating temperature Maximum 105°F (220°C)
Weight SCS 4.8 oz (136 g)

SCM 12.0 oz (340 g)
SCL 26.0 oz (748 g)

Safety Working Voltage 600 Vac, Category III

Dielectric Strength 5000 Vac around case
600 Vac rated leads

Certifications ETL certified to UL Standard 61010-1
cETL certified to CAN/CSA Standard

C22.2 No. 61010-1
CE Conformity CE Low Voltage Directive 2006/95/EC

Ordering Information

Part Number Description

Small Split-Core CT; 0.75” (19 mm) Opening; 50A
Small Split-Core CT; 0.75” (19 mm) Opening; 100A
Medium Split-Core CT; 1.25” (32 mm) Opening; 100A
Medium Split-Core CT; 1.25 (32 mm) Opening; 200A
Medium Split-Core CT; 1.25" (32 mm) Opening; 400A
Medium Split-Core CT; 1.25” (32 mm) Opening; 600A
Large Split-Core CT; 2.00” (51 mm) Opening; 600A
Large Split-Core CT; 2.00” (51 mm) Opening; 1000A

1) Included in MD Model Power Meter Kits numbers MD-xxx-3-CTSC-400A.

2) Included in MD Model Power Meter Kits numbers MD-xxx-3-CTSC-600A.

Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as
design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners.
© 2014 Siemens Industry, Inc.

Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
USA
[phone]

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