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LUMEL CURRENT TRANSFORMER CT 1250/5A CLASS-0.5, 20VA 50/60Hz Busbar 81 x 12.5mm, LCTB 1048041250A55

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PRIMARY CURRENT : 1250A
SECONDARY CURRENT : 5A
MOUNTING : BUSBAR
ACCURACY CLASS : CLASS 0.5
VA RATING : 20VA
HS Code : 8504 3100
Lead Time : 4-6 Weeks
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LUMEL CURRENT TRANSFORMER (CT) 1250/5A CLASS-0.5, 20VA 50/60Hz Busbar: 81 x 12.5mm, LCTB 1048041250A55


Current Transformer is used for the measurement of electric alternating currents. When current in a circuit (primary current) is too high to directly apply to measuring instruments, a current transformer produces a reduced current (secondary current) accurately proportional to the current in thec circuit, which can be conveniently connected to measuring and recording instruments. A current transformer also isolates the measuring instruments from what may be very high voltage in the monitored circuit. Relationship between primary and secondary currents is called rated transformation ratio.

Featues:
•  Wide range of accuracy classes: 0.2S, 0.2, 0.5S, 0.5, 1; 3
•  Wide range of supported primary currents, the dimensions of rails, the length of casing and hole diameters.
•  Multiple mounting methods, including wall mounting, DIN rail 35mm, the conductor, a current bar.
•  Shields designed to seal connections.

General Specification
Applicable standard:IEC 61869-1/2
Case:10% glass filled polycarbonate, flame retardant grades classified UL 94V-0 or housing made of epoxy resin (LRC series only)
Connection:Two connections on each side. M4 screws with self lifting clamp strap.
Insulation class
Test voltage:
E (120°C max)
4kV, 1 min, 50Hz
3kV, 1 min, 50Hz (for LCTB 50/xx(30), LCTB 50xx(50))
Maximum system voltage:0.72 kV
Operating frequency:
Rated primary rating:  
50/60 Hz
1 A…7500 A
Rated secondary output:
Rated burden:   
5 A or 1 A (for LCTP 3-phase current transformers only 5 A)
1, 1.25, 1.5, 2.5, 3.75, 5, 7.5, 10, 12.5, 15, 20, 30, 45, 60, 100 VA
Accuracy class:
0.2, 0.2S, 0.5S – for laboratory and power measurement
0.5 – for accurate measuring
1; 3 – for general measurement, for analog meters
Ambient temperature:
Operating temperature:
 -25°C …+40°C
10°C …+55°C
Storage temperature:
Rated continuous thermal current (Icth):
-50°C…+80°C
1,2 x In

Thermal short circuit current (Ith):
40 x In for wound type
60 x In for bus bar type
Dynamic short circuit current (Idyn):2.5xIth
Instrument security factor (FS):


2.5, 5, 10


Specifications

BrandLUMEL
Model NumberLUMEL LCTB 1048041250A55
PRIMARY CURRENT 1250A
SECONDARY CURRENT 5A
MOUNTING BUSBAR
ACCURACY CLASS CLASS 0.5
VA RATING 20VA
Lead Time 4-6 Weeks
Warranty 2 year warranty
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