YUANXING
Data Sheet
TA7261 Current Transformer
Three Phase Current Transformer
The TA7261 series of toroidal current ...
YUANXING
Data Sheet
TA7261 Current Transformer
Three Phase Current Transformer
The TA7261 series of toroidal current transformers are designed for applications where a high overcurrent measurement capability is a desirable feature. Typically used in 380VAC or 660VAC protection circuits, these CTs offer superior step-down transformation to typical microprocessor circuitry signal levels.
Performance:
Rated Output: mA secondary output dependent upon the primary to secondary ratio selected.
Optional: 0.100V to 0.353V @ rated current.
Specifications:
Frequency: 50 to 400 Hz Dielectric Resistance: 1,000 M ohms @ 500
Vdc
Isolation
Voltage: 2500 VRMS for 1 minute,
0.5mA
Surge withstand potential: 5000V Secondary burden resistance: ≥ 100k Ohms Operating Temperature: -25°C to +55º C
(Option: -40°C to +85º C)
Construction:
o PBT or ABS Resin case, UL 94 V-0 flame retardant rating.
o Epoxy encapsulated.
Lead: 26AWG (0.12mm2), RVVP4, 0.6m
(2FT)
RoHS Compliant
Performance Options:
Rated Input (A)
25 50 100
Ratio
1:2000 1:3000
Accuracy Class
(IEC 60044-1)
0.2, 0.5
Over Current Multiple
10 8
Over Current Persistence Time
(seconds)
2
Typical Performance TA7261-100A/ 40mA:
The accuracy of the current transformer is a function of the secondary burden impedance and the operating range. The lower the secondary burden impedance, the better the accuracy performance. The typical performance of the TA7261-100A/ 40mA is;
Burden resistance ≤ 15 ohms, Accuracy Class = ...
