Why this FAQ?
This FAQ helps engineers, OEMs, and panel builders understand the technical features, operation, and benefits of Mersen’s GMD-230V ground monitoring device for safe and efficient earthing management.
What is the Mersen GMD-230V Ground Monitoring Device used for?
The Mersen GMD-230V continuously monitors grounding systems in electrical installations. It ensures correct earthing, detects open or high-resistance earth connections, and supports reliable operation of surge protection devices to improve personnel and equipment safety.
What are the electrical specifications of the GMD-230V?
It operates at 230 V AC (±20%) and 50–60 Hz, with a nominal system voltage of 230 V AC. The rated impulse voltage is 4 kV (Category III), and the power consumption is about 5 VA. The internal AC resistance is approximately 7 Ω with a permissible extraneous DC voltage of up to 100 V.
How does the GMD-230V detect faults in grounding systems?
The device measures loop impedance (N–PE) and compares it against a set response threshold (default 50 Ω, user-adjustable). When impedance exceeds the set limit, it triggers an open-earth indication (EOP) within ≤10 s, allowing prompt maintenance action.
What is the response accuracy and hysteresis of the GMD-230V?
The relative uncertainty is within ±10 %, with a hysteresis of about 4 %. This ensures reliable fault detection without nuisance tripping in fluctuating grounding conditions.
In which applications is the GMD-230V typically used?
It is suited for telecom sites, water treatment facilities, commercial buildings, data centers, and industrial panels where continuous earth monitoring helps prevent costly downtime and equipment damage.
What are the installation and connection features of the GMD-230V?
The unit is DIN rail–mountable for panel integration. It connects to the N–PE loop and supports up to 500 Ω impedance measurement. Maximum output power (OUT IOUT) is 0.1 VA, with system leakage capacitance (N–PE) ≤ 4 µF for proper operation.
Why is continuous ground monitoring important?
Proper grounding prevents electric shock, equipment damage, and surge failure. Regular monitoring with devices like the GMD-230V ensures compliance with safety norms and reduces preventive maintenance costs.
Where can I buy the Mersen GMD-230V in India?
Purchase through Shansen Enterprises, an authorized Mersen channel partner offering genuine products, technical support, and pan-India delivery. Quick WhatsApp quotes available.
Where can I buy the Mersen GMD-230V in India?
Purchase through Shansen Enterprises, an authorized Mersen channel partner offering genuine products, technical support, and pan-India delivery. Quick WhatsApp quotes available.
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