FAQ – IS200EGDMH1A

Q1: Does IS200EGDMH1A require the EXAM module to function?
A: Yes. The EGDM relies on the EXAM module to measure ground path voltage. EXAM attenuates this voltage and sends it to EGDM for ground fault analysis.

Q2: How many EGDM modules are needed in a redundant system?
A: Three modules are used—one Controller and two Masters (Master1 and Master2) to ensure fault tolerance. The modules are configured using programming pins.

Q3: Can this module be used in a simplex (non-redundant) system?
A: Yes, a single EGDM module is sufficient for simplex setups, but redundancy enhances system reliability.

Q4: What is the detectable resistance range for ground faults?
A: The module can detect ground resistance in the range of 0 to 200 kΩ.

Q5: How fast does the module respond to a detected fault?
A: It reacts in under 10 milliseconds, which is fast enough for real-time protective actions.

Q6: Is it suitable for extreme temperature environments?
A: Yes. It operates in a wide range from –30°C to +65°C, ideal for industrial and utility applications.

Q7: What should I check if the “Active” LED is off?
A: It could mean the module is not selected as Master, it’s not receiving input from EXAM, or it’s not properly installed. Verify wiring and system configuration.

Q8: Will its weight or size affect panel installation?
A: Not at all. Weighing approximately 0.467 kg and sized for standard 6U racks, it fits comfortably in existing EPBP racks.

Q9: Does it support monitoring of both AC and DC excitation systems?
A: Yes. It can monitor both types of fields for ground faults.

Q10: What should I do before replacing this module?
A: Ensure:

• It’s the correct model

• Jumper settings are properly configured

• All fiber optic and signal connections are correct

• Power is disconnected before handling

• The new module is installed securely into the EPBP rack