Schweitzer Engineering Laboratories SEL-734W, Справочник по полевым условиям эксплуатации

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1.6
SEL-734W and SEL Wireless Current Sensor Field Reference Guide Date Code 20191029
Introduction and Specifications
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 inch diameter x 6.97 inch 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
Typical Update Period vs Line Current
(See Table 5.1)
Load Magnitude and Phase Measurement Accuracies
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5 200 400 600 800 1000
+
/–
%
E
rro
r
Amperes rms
Mag Error
0
1
2
3
4
5
6
7
8
9
10
5 100 200 300 400 500 600 700 800 900 1000
+/
–
D
eg
rees
E
rr
o
r
Amperes rms
Degrees Error (Single Phase)
Maximum Voltage
38 kV (L-L)
Maximum Steady-State Load Current
1000 A (Thermal Rating)
Maximum Fault Current
25 kA for 10 cycles
Power
Minimum Load Current
2 A
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
Modulation
FSK
Link Range
1,500 ft line-of-sight
Type Tests
Electromagnetic Compatibility Emissions
Radiated: 47 CFR Part 15.109
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
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
0
1
2
3
4
5
6
7
8
9
10
5 100 200 300 400 500 600 700 800 900 1000
+/
–
D
eg
rees
E
rr
o
r
Amperes rms
Degrees Error (3-Phase)