EBONY MOULDED CASE
CURRENT TRANSFORMERS
TE’S CROMPTON INSTRUMENTS
ENERGY
/// EBONY MOULDED CASE CURRENT TRANSFORMERS
Ebony moulded case current transformers
FEATURES
• CT ratios from 1A to 6000A
with 5A and 1A secondaries
• Accuracy up to class 0.5
• Integral terminal cover
• High impact, flame retardant
moulded case
• Busbar, DIN-rail or foot
mounting options
APPLICATIONS
• BS EN61010-1
• EN60044-1
• UL recognized file no:
E257877
BENEFITS
• Wide range of apertures and
case sizes
• Reduction of high currents for
ease of metering
• Long product life
The range of TE’s Crompton Instruments Ebony current transformers offers wide
system current ratings, apertures, busbar and case sizes to suit every application.
Manufactured to meet EN 60044 the range benefits include ratio rating from
1/5 to 6000/5, accuracy up to class 0.5, integral terminal cover for safety and
multiple mounting options.
CONSTRUCTION
The toroidal core and secondary winding is encapsulated by a self-extinguishing
polycarbonate moulded case cover providing excellent mechanical strength
and electrical insulation. The material is halogen free thus reducing risk of
halogen emissions in case of fire. The integral covered secondary terminals offer
protection to IP20B and the enclosure is protected to IP40.
INSTALLATION OPTIONS
•
•
•
•
•
Plug-in metal feet for wall or base mounting
Plastic DIN-rail clips for DIN-rail mounting
Moulded busbar mounting
Primary copper busbar mounting
Multi busbar mounting for two busbars
* Thermal current (Ith) &
dynamic current (ldyn)
lth is the highest primary
current (effective value), the
ldyn is the highest primary
current (Peak Value) that the
CT can support for 1 second
without damage, owing to
excessive overloads with
secondary short circuits.
SPECIFICATIONS
System voltage:
Test voltage:
System frequency:
Short circuit thermal current (Ith)*:
Overload withstand:
Dynamic current (Idyn)*:
Saturation coefficient:
Service temperature:
Insulation class:
Enclosure code:
Integral terminal cover:
Complies with:
Humidity:
Secondary terminals screw clamp:
‘Fast On’:
720 V maximum
3 kV for 1 minute
50/60 Hz
60 x rated primary current for 1 second
1.2 x rated current continuously
= 2.55 x Ith
<5 for through aperture models
<10 for wound primary
-20°C to 85°C
Class E BS2757 IEC 85
IP40
IP20B
IEC60044-1:2003
Up to 95% RH (non condensing)
Up to 10 mm
2
cable
6.3 mm type
LOSS IN COPPER WIRES BETWEEN INSTRUMENT AND CT
FOR 5A SECONDARY
WIRE SECTION
IN MM
2
1.5
2.5
4
6
10
1M
0.60
0.36
0.22
0.15
0.09
LOSS IN VA (FOR BOTH WIRES)
2M
4M
6M
8M
1.19
2.38
3.57
4.76
0.71
1.43
2.14
2.86
0.45
0.89
1.34
1.79
0.30
0.60
1.89
1.19
0.18
0.36
0.54
0.71
10M
5.95
3.57
2.23
1.49
0.89
LOSS IN COPPER WIRES BETWEEN INSTRUMENT AND CT
FOR 1A SECONDARY
WIRE SECTION
IN MM
2
1
1.5
2.5
4
6
10
ENERGY
/// EBONY MOULDED CASE CURRENT TRANSFORMERS
10M
0.36
0.24
0.14
0.09
0.06
0.04
20M
0.71
0.48
0.29
0.18
0.12
0.07
LOSS IN VA (FOR BOTH WIRES)
40M
60M
80M
1.43
2.14
2.86
0.95
1.43
1.90
0.57
0.86
1.14
0.36
0.54
0.71
0.24
0.36
0.48
0.14
0.21
0.29
100M
3.57
2.38
1.43
0.89
0.60
0.36
Ebony moulded case current transformers
M53Q RANGE
Case size:
Aperture:
Weight:
MODEL TYPE
M53Q-50/5
M53Q-60/5
M53Q-75/5
M53Q-80/5
M53Q-100/5
M53Q-125/5
M53Q-150/5
M53Q-200/5
M53Q-250/5
M53Q-300/5
45 mm wide x 30 mm deep x 65 mm high
1.8" wide x 1.2" deep x 2.5" high
20 x 6 mm and 21 mm diameter
0.8" x 0.2" and 0.8" diameter
0.25 kg
PRIMARY CURRENT
50
60
75
80
100
125
150
200
250
300
VA AT CLASS 3
1
1.25
1.5
1.25
2.5
3
3.75
5
-
7.5
VA AT CLASS 1
-
-
-
-
1.5
2.5
2.5
3.75
5
5
ORDERING CODES
• As above. Change end suffix to depict required secondary. For example:
M53Q-50/1
• M50-DINCLIP. DIN-rail mounting clip for DIN-rail mounting option (2 required)
• Mounting feet centres
26 mm x 51 mm
M55E RANGE
Case size:
Aperture:
Weight:
MODEL TYPE
M55E-30/5
M55E-40/5
M55E-50/5
M55E-60/5
M55E-75/5
M55E-80/5
M55E-100/5
50 mm wide x 50 mm deep x 80 mm high
2" wide x 2" deep x 3.1" high
15 x 5 mm and 16 mm diameter
0.6" x 0.2" diameter
0.4 kg
PRIMARY CURRENT
30
40
50
60
75
80
100
VA AT CLASS 3
1.25
2.5
2.5
3.75
5
5
7.5
VA AT CLASS 1
-
-
-
2.5
3.75
3.75
5
ORDERING CODES
• As above. Change end suffix to depict required secondary. For example:
M55E-50/1
• M50-DINCLIP. (2 required)
• Mounting feet centres
33 mm x 71 mm
PAGE 3
Ebony moulded case current transformers
M53J RANGE
Case size:
Aperture:
Weight:
MODEL TYPE
M53J-100/5
M53J-125/5
M53J-150/5
M53J-160/5
M53J-200/5
M53J-250/5
M53J-300/5
M53J-400/5
50 mm wide x 30 mm deep x 80 mm high
2" wide x 1.2" deep x 3.1" high
30 x 10 mm, 25 x 15 mm and 20 x 20 mm and 25 mm diameter
1.2" x 0.4", 1" x 0.6" and 0.8" x 0.8" and 1.0" diameter
0.22 kg
PRIMARY CURRENT
100
125
150
160
200
250
300
400
VA AT CLASS 3
1.25
1.25
2.5
2.5
2.5
3.75
5
7.5
VA AT CLASS 1
-
-
-
-
2.5
2.5
3.75
3.75
ORDERING CODES
• As above. Change end suffix to depict required secondary. For example:
M53J-150/1
• M50-DINCLIP. DIN-rail mounting clip for DIN-rail mounting option (2
required)
• Mounting feet centres
33 mm x 51 mm
M65F RANGE
Case size:
Aperture:
Weight:
MODEL TYPE
M65F-30/5
M65F-40/5
M65F-50/5
M65F-60/5
M65F-75/5
M65F-80/5
M65F-100/5
M65F-125/5
M65F-150/5
M65F-200/5
M65F-250/5
M65F-300/5
60 mm wide x 50 mm deep x 94 mm high
2.4" wide x 2" deep x 3.7" high
20 x 10 mm and 23 mm diameter
0.8" x 0.4", 0.9" diameter
0.4 kg
PRIMARY CURRENT VA AT CLASS 3
30
1.25
40
2.5
50
2.5
60
3.75
75
5
80
5
100
7.5
125
7.5
150
15
200
20
250
20
300
30
VA AT CLASS 1
-
-
-
-
2.5
2.5
5
5
10
15
20
30
VA AT CLASS 0.5
-
-
-
-
-
-
2.5
2.5
5
7.5
10
10
ORDERING CODES
• Mounting feet centres
42 mm x 71 mm
• As above. Change end suffix to depict required secondary. For example:
M65F-150/1
• M50-DINCLIP. DIN-rail mounting clip for DIN-rail mounting option (2 required)
Consult factory for availability and lead time on 1A secondary.
ENERGY
/// EBONY MOULDED CASE CURRENT TRANSFORMERS
Ebony moulded case current transformers
M63N RANGE
Case size:
Aperture:
Weight:
MODEL TYPE
M63N-200/5
M63N-250/5
M63N-300/5
M63N-400/5
M63N-500/5
M63N-600/5
M63N-750/5
M63N-800/5
60 mm wide x 30 mm deep x 94 mm high
2.3" wide x 1.2" deep x 3.7" high
40 x 10 mm and 32 mm diameter
1.5" x 0.4" and 1.2" diameter
0.3 kg
PRIMARY CURRENT
200
250
300
400
500
600
750
800
VA AT CLASS 3
2.5
3.75
5
7.5
10
10
15
15
VA AT CLASS 1
-
2.5
3.75
5
7.5
7.5
10
10
VA AT CLASS 0.5
-
-
-
-
3.75
5
7.5
7.5
ORDERING CODES
• As above. Change end suffix to depict required secondary. For example:
M53J-150/1
• M50-DINCLIP. DIN-rail mounting clip for DIN-rail mounting option (2 required)
• Mounting feet centres
42 mm x 51 mm
MA5G RANGE
Case size:
Aperture:
Weight:
MODEL TYPE
MA5G-100/5
MA5G-125/5
MA5G-150/5
MA5G-200/5
MA5G-250/5
MA5G-300/5
MA5G-400/5
MA5G-500/5
MA5G-600/5
MA5G-750/5
MA5G-800/5
MA5G-1000/5
77 mm wide x 50 mm deep x 116 mm high
3" wide x 2" deep x 4.5" high
40 x 10 mm, 30 x 30 mm and 36 mm diameter
1.6" x 0.4", 1.2" x 1.2" and 1.4" diameter
0.6 kg
PRIMARY CURRENT
100
125
150
200
250
300
400
500
600
750
800
1000
VA AT CLASS 3
2.5
5
5
10
10
10
10
10
10
15
15
20
VA AT CLASS 1
-
2.5
3.75
5
7.5
7.5
7.5
7.5
10
10
10
15
VA AT CLASS 0.5
-
-
-
2.5
5
5
5
5
7.5
10
10
15
ORDERING CODES
• Mounting feet centres
58.5 mm x 71 mm
• As above. Change end suffix to depict required secondary. For example:
MA5G-150/1
• M50-DINCLIP. DIN-rail mounting clip for DIN-rail mounting option (2 required)
Consult factory for availability and lead time on 1A secondary.
PAGE 5
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