Key Features:

High resolution (1000:1) for precise current measurement
Low residual offset, eliminating the need for frequent degaussing
Bidirectional measurement: captures current flow in both directions
Split-core design for easy installation without disrupting circuits
Non-contact sensing for isolation and safety
Input/Output isolation to protect equipment
Low power consumption for efficient monitoring
Outdoor installation: weather-resistant with conduit attachment for rugged environments
Wide temperature range: Operates from -40°C to +85°C
Conduit attachment: Designed with a rigid 1/2” (12.7mm diameter) conduit for secure outdoor use

Why Measure Geomagnetically Induced Currents (GICs)?

Geomagnetically Induced Currents (GICs) are caused by geomagnetic storms, which disturb Earth’s magnetic field due to coronal mass ejections (CMEs) from the sun. These currents can affect long electrical conductors like power grids, railroads, and underground pipelines. GICs can induce power outages or equipment failures, making it critical to monitor and mitigate their effects on electrical infrastructure.

Product Specifications:

Input:
Current Range: Varies by model (see below)
Over-range protection: Handles up to 8000A without damage
Bandwidth: DC to 1.5Hz (1.5Hz low pass filter on output)

Output:
Scaling:
Models B, D, X5: 0 to ±FS input = 0 to ±FS output
Model EM: -FS/0/+FS input = 4/12/20mA output
Model E (unidirectional): 0 to FS input = 4-20mA output
Loading:
Models E, EM: 0-500Ω
Model B: 0-10kΩ
Models D, X5: ≥2kΩ
Response time: <350ms (typical for 90% response)

Instrument Power:
Standard: 24Vac/24Vdc ±10%
Option: 12Vac/12Vdc ±10%
Nominal Current: 80mA
Maximum Current: 100mA

Accuracy:
Linearity, offset, setpoint, and repeatability: ≤0.5% F.S.
Over-range residual offset: 0.0007A/A of input current (max offset = 350mA)
Linearity: ≤0.1% F.S.
Temperature effect: ±0.025%/°C
Temperature effect: ±0.025%/°C

Physical:
Operating temperature: -40°C to +85°C
Storage temperature: -40°C to +85°C
Weight: 2.0 lbs

Model Selection:

The CTH-GIC DC current sensor is a versatile and reliable tool for monitoring GICs in power grids and other infrastructure. Its robust design, high accuracy, and easy installation make it ideal for use in a variety of applications where DC and AC currents need to be measured simultaneously.