Information Sheet

4
S E L- 73 4 W a n d S E L-WC S Inf o r ma t i o n S h e e t D a t e Co d e 20 1 9 1 0 1 4
SEL-WCS Specifications
SEL-WCS Specifications
Compliance
Designed and manufactured under an ISO 9001 certified quality
management system
General
Operating Temperature
–40° to +85°C (–40° to +185°F)
Storage Temperature
–40° to +85°C (–40° to +185°F)
Operating Environment
Pollution Degree: 2
Relative Humidity: 5%–95%, noncondensing
Maximum Altitude: 2000 m
Ingress Protection
IP67
Clamp Range (SEL WCS)
6.35 mm to 31.75 mm (0.25 in to 1.25 in)
Dimensions
141.7 mm diameter x 177.0 mm height
(5.58 in. diameter x 6.97 in. height)
Weight
Wireless Current Sensor: 0.85 kg (1.9 lb)
Overvoltage
Category III
Insulation Class
Class III
System
Power System Frequency Range
45–65 Hz
Load Magnitude Accuracy
1% (preliminary)
Phase Measurement Accuracy
~3 degrees
Maximum Voltage
38 kV (L-L)
Maximum Steady-State Load Current
1000 A (Thermal Rating preliminary)
Maximum Fault Current
25 kA for 10 cycles
Power
Minimum Load Current
2A
Radio System
Frequency Band
902–928 MHz ISM band (U.S.A, Canada)
SEL WCS
TX Power (Effective Isotropic Radiated Power)
50 mW (17 dBm) peak,
40 mW (16 dBm) typical
SEL-WCS Receiver Card
Antenna Connector: SMA, 50 
RX Sensitivity (1% Error
Rate): TBD
Modulation
FSK
Link Range
TBD
Type Tests
Electromagnetic Compatibility Emissions
Radiated: 47 CFR Part 15.109
Class A
Conducted: 47 CFR Part 15.107
Class A
Electromagnetic Compatibility Immunity
Electrostatic Discharge: IEC 61000-4-2:2008
IEEE C37.90.3-2001
Discharges:
Indirect: ±8 kV
Contact: ±8 kV
Air: ±15 kV
Radiated: IEEE C37.90.2-2004
20 V/m
rms
; 80 MHz to 1 GHz
>35 V/m
rms
with 80% 1 kHz sine wave
modulation
Surge: IEC 61000-4-5:2005
PT: ±0.5; 1.0; 2.0 kV; line-to-line
PT: ±0.5; 1.0, 2.0, 4.0 kV; line-to-earth
Conducted: IEC 61000-4-6:2008
10 V
rms
; 150 kHz to 80 MHz
80% 1 kHz sine wave modulation
Power Frequency Magnetic
Field:
IEC 61000-4-8:2009
100 A/m; 50/60 Hz; 60 s
1000 A/m; 50/60 Hz; 1–3 s
IEEE Surge Withstand
Capability:
IEEE C37.90.1-2012
Damped Oscillatory (1 MHz)—
(CM & DM)
Power Input: ±2.5 kV
Communications Ports: ±2.5 kV
(CM only)
Fast Transient (5 kHz)—(CM & DM)
Power Input: ±4.0 kV
Communications Ports: ±4.0 kV
(CM only)
Environmental
Cold: IEC 60068-2-1:2007
Cold Profile Ad; –40°C; 16 hours;
operational
Dry Heat: IEC 60068-2-2:2007
Dry Heat Profile Bd; +85°C; 16 hours;
operational
Damp Heat; Cyclic: IEC 60068-2-30:2005
Damp Heat Profile Db; +25° to +55°C;
relative humidity 93%; 6 cycles
Vibration: IEC 60255-21-1:1988
Class 1 Vibration Endurance
Class 2 Vibration Response
Shock and Bump: IEC 60255-21-2:1988
Class 1 Shock Withstand
Class 1 Bump
Class 2 Shock Response
Seismic: IEC 60255-21-3:1993
Class 2 Quake Response