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All-Fiber Current Sensing Coils

Features
  • Low Insertion Loss
  • Temperature Insensitive
  • Precise Spinning Pitch
  • No Requirement for Quarter Wave Plates
  • High Current Sensitivity
  • High Long-Term Stability
  • Polarization Stable
  • Vibration and Shock Stable
Specifications
Parameters Unit Performance
Operating Wavelength nm 1310, 1550
Bandwidth nm ±30
Temperature Coefficient for Transmissive Model %/°C ±0.002
Temperature Coefficient for Reflective Model %/°C ±0.004
Linearity deviation for Temperature Coefficient Typ % ±2
Insertion Loss Typ dB 3.0
Insertion Loss Max dB 4.0
Modal Field Diameter Typ μm 9.0±0.5
Operating Temperature °C -40 to +85
  Voltage Grade A (mm) B (mm) C (mm)
1 For 110kV 170 250 25
2 For 220kV 280 360 25
3 For 550kV 560 640 25
4 For 750kV 800 900 30
5 For 1000kV 1200 1300 30
C
O
I
L
1
0

Voltage Grade

1=110kV
2=220kV
3=500kV
4=750kV
5=1000kV

Sensing Model

T=Transmissive
R=Reflective

Wavelength

4=1550nm
5=1480nm
7=1310nm

Fiber Type

E=Panda

Pigtail Type

M=0.9mmloose tube
L=3mm cable

Pigtail Length

1=1.0m
2=2.0m
3=3.0m

Connector

0=None