CET Electric Technology
100
Appendix E Technical Specifications
Voltage Inputs (V1, V2, V3, VN)
Standard Un
Range
Overload
Burden
Measurement Category
400VLN/690VLL
10V to 1.2Un
1.2xUn continuous, 2xUn for 1s
<0.02VA per phase
CAT III up to 600VLL
Frequency
45-65Hz
Current Inputs (I11, I12, I21, I22, I31, I32)
In
Range
Starting Current
Overload
Measurement Category
Burden
Standard 5A (5A/1A Auto-Scale), Optional 1A
0.1% to 200% In
0.1% In
2xIn continuous, 20xIn for 1s
CAT III up to 600VLL
<0.15VA per phase @ 5A
Power Supply (L+, N-, GND)
Standard
Optional
Burden
Overvoltage Category
95-250VAC/DC, ±10%, 47-440Hz
20-60VDC
<3W
CAT III up to 300VLN
Digital Inputs (DI1, DI2, DI3, DI4, DIC)
Type
Sampling
Hysteresis
Dry contact, 24VDC internally wetted
1000Hz
1ms minimum
Digital Outputs (DO11, DO12, DO21, DO22)
Type
Loading
Form A Mechanical Relay
5A @ 250VAC or 30VDC
Pulse Outputs (E1+, E1-, E2+, E2-)
Type
Isolation
Max. Load Voltage
Max. Forward Current
Form A Solid State Relay
Optical
80V
50mA
Optional I4 Input (·I41, I42)
In
Range
Starting Current
5A (5A/1A Auto-Scale)
0.1% to 200% In
0.1% In
Optional Residual Current Input (*IR, IR)
In
Range
CT Type
0.5mA
2% to 500% In
Solid-Core or Split-Core Residual Current CT
Optional Analog Input (AI+, AI-)
Type
Overload
0-20 / 4-20 mA
24 mA maximum
Residual Current CT
Load Current (Solid Core)
Load Current (Split Core)
Primary Input
Secondary Output
Range
Overload
Accuracy
Frequency
Dielectric Strength
Operating Temperature
Storage Temperature
160A (CT517203, Ø=46mm)
400A (CT517403, Ø=80mm)
630A (CT519703, 220x50mm)
1000A (CT517603, Ø=120mm)
160A (CT553203, Ø=48mm)
225A (CT553303, Ø=68mm)
1A (Residual Current)
0.5mA
2-200%
44A (Residual Current)
Class 0.5 (Solid Core), Class 3 (Split Core)
50/60Hz
3kV rms @ 1 minute
-25°C to +70°C (Solid Core)
-12°C to +45°C (Split Core)
-40°C to +85°C (Solid Core)
-25°C to +70°C (Split Core)
Installation Torque
Current Inputs
1.3 N.m
Power Supply, Voltage Inputs,
RS485 and I/O
0.5 N.m
Environmental Conditions
Operating Temp.
Storage Temp.
Humidity
Atmospheric Pressure
-25°C to 70°C
-40°C to 85°C
5% to 95% non-condensing
70 kPa to 106 kPa
