Specifications are subject to change without notice SCT166/125 DS 0703 1
•Split-core current transformer
•Cable/bus-bar type current transformer
•5A (or 1A on request) secondary current
•Class 0.5 available on request
Product Description
Model
Primary current
Secondary current
Accuracy class
Ordering Key
These split core current
transformers can be used for
currents from 500A to 3000A.
The current transformers are
made according to BS3938,
EN60044-1 and DIN42600
standards.
Accessories
Split-core Current Transformer, 1-Phase AC
Type SCT166/125
Type Selection
Primary Current
Refer to Range Table
Model SCT166/125
Bus-bar size: 62 x 127 mm
Rated secondary current 5 A
1 A (on request)
Output Specifications
Input Specifications
Operating frequency 50 to 60 Hz
Max. system voltage 0.72 kV
Rated insulation level 4kVRMS, 50Hz, 1 min
Short-time current rating
Ith 60 In
Idyn 2.5 x Ith
Extended current rating 120%
Security factor (FS) 5, 10
Insulation class E (MAX 120°C)
Protection IP00
Working temperature range -20 to 45°C
Storage temperature -50 to 80°C
Standards According to BS3938,
EN60044-1 and DIN42600
Connection M5 screw easy to handle
and securing low contact
resistance.
Housing ABS, self-extinguishing:
UL 94 V-0
Mounting Bus-bar
Standard accessories None
Accesories on request None
Special features The terminal cover is fitted
for a lead seal.
This execution complies with
the VGB4 protection of
DIN57106 standard.
Cable diameter Max. 62 mm
Bus-bar size 62 x 127 mm
General Specifications
SCT166125 5005A C1
Secondary current
5A
1A (on request)
Accuracy class
1 ... 3 (see table)
0.5 (on request)
2Specifications are subject to change without notice SCT166/125 DS 0703
Dimensions (mm)
Range Table
Rated Rated secondary current 5 A (1 A on request)
Primary Class 1 Class 3 Class 0.5 (*) Primary Class 1 Class 3 Class 0.5 (*)
Current Burden Burden Burden Current Burden (VA) Burden Burden
500 A 2.5 VA 5 VA - 1500 A 5/10/15 20 VA 5/10 VA
600 A 2.5 VA 5/7.5 VA - 1600 A 5/10/15 20 VA 5/10 VA
800 A 5 VA 10 VA 1.5 VA 2000 A 5/10/15/20 - 5/10/15 VA
1000 A 5/10 VA 15 VA 2.5 VA 2500 A 5/10/15/30 - 5/10/15/20 VA
1200 A 5/10/15 VA 20 VA 5 VA 3000 A 5/10/15/30 - 5/10/15/30 VA
1250 A 5/10/15 VA 20 VA 5 VA
Note: every accuracy class is showing many Burden values: the first value (e.g. 5 out of 5/10/15VA) is available as standard, whi-
le the other ones are available on request.
* On request
SCT166/125
Wiring Diagram
Output secondary
L
N
