183
Specifications Appendix A
Current Transformer (CT)
Specifications
Note The maximum continuous current of the E5ZN is 50 A.
External Dimensions (Unit: mm)
E54-CT1
Altitude 2,000 m or less
Recommended fuse T4A, 125 V, time lag, low shut-off capacity
Communications method RS-485 (half duplex)
Communications format Fixed
Insulation resistance 20 MΩ min. (at 500 VDC)
Dielectric strength 1500 VAC, 50 or 60 Hz 1min
Vibration resistance
10 to 55 Hz, 20 m/s
2
for 2 hrs. each in X, Y and Z directions
Shock resistance
300 m/s
2
max. 3 times each in 3 axes, 6 directions
Protective structure Front panel: IP50, Rear case: IP20, Terminal section: IP00
Memory protection EEPROM (non-volatile memory) (number of writes: 100,000)
Weight Approx. 100 g, Adapter: approx. 10g
Item Specifications
Model E54-CT1 E54-CT3
Max. continuous current 50 A 120 A (See note.)
Dielectric strength 1000 VAC (for 1 minute)
Vibration resistance
50 Hz 98m/s
2
{10G}
Weight Approx. 11.5 g Approx. 50 g
Accessory None Armature (2)
Plug (2)
21
15
25
5
.
8
d
i
a
.
10.5
40
3
2.8
7.5
T
w
o
,
3
.
5
d
i
a
.
30
10