Premium Digital Grounding Devices with Smart Monitoring

The Rasnal VKP Premium range goes beyond protection. It tells you what happened, when it happened, and whether your grounding system is operating correctly — all on a built-in OLED display and remotely over RS-485 MODBUS.

Available in single-phase and three-phase configurations at 120 kA and 480 kA surge capacities, VKP Premium is designed for facilities that treat grounding as an active part of their electrical infrastructure, not a passive afterthought.

What Are Rasnal VKP Premium Digital Grounding Devices?

Rasnal VKP Premium Digital Grounding Devices enhance the standard VKP range with intelligent monitoring, alarms, and remote communication features. While the VKP-01 and VKP-03 models offer surge protection and low-impedance grounding, the Premium models provide real-time visibility into device status and surge events, crucial for compliance documentation and preventive maintenance.

The Premium range includes four models for both phase types and surge capacities of 120 kA and 480 kA. Each model features an OLED display, surge current counter, hooter alarm connectivity, and RS-485 MODBUS remote monitoring.These devices are ideal for facilities with maintenance teams, compliance requirements, or remote monitoring needs, where tracking surge events informs maintenance schedules and equipment upgrades.

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What Makes the Premium Range Different

128×64 Lattice OLED Display with Status LED

The Premium models feature a 128×64 OLED display, a major upgrade from the standard LED indicators. This display offers clear, on-device status information, complemented by green/red LED indicators for instant visual confirmation of operation, eliminating the need for external monitoring systems.

Lightning and Surge Current Counter

The integrated surge current counter records all detected surge events, covering a detection range of 0.3 kA to 50 kA at 8/20 µs. This functionality is essential for understanding surge frequency, aiding in maintenance scheduling, equipment upgrades, and compliance demonstration.

Hooter Alarm Connectivity

Upon detecting a surge, the Premium models can trigger an external hooter or alarm, providing immediate audible alerts—particularly useful in large industrial or remote sites where visual monitoring may not suffice.

RS-485 Communication with MODBUS Protocol

The RS-485 interface with MODBUS protocol allows seamless integration with building management systems (BMS), SCADA platforms, and industrial monitoring networks. This enables remote access to surge events, device status, and counter data, crucial for large infrastructures and multi-site operations.

Available Models and Technical Specifications

Model Name — VKP-01-PREMIUM / VKP-03-PREMIUM

Parameter VKP-01-PREMIUM (1-Phase) VKP-03-PREMIUM (3-Phase)
Rated Input Voltage 100 VAC – 275 VAC, 1 Phase 380–415 VAC ±10%, 3 Phase
Frequency 50–60 Hz 50–60 Hz
Maximum Surge Handling Capacity 120 kA (8/20 µs) 240 kA (8/20 µs)
Display 128×64 OLED + Green/Red LED 128×64 OLED + Green/Red LED
Surge Current Detection Range 0.3–50 kA (8/20 µs) 0.3–50 kA (8/20 µs)
Alarm Connectivity Hooter output Hooter output
Remote Monitoring RS-485 / MODBUS RS-485 / MODBUS

Model Name — VKP-01-480-PREMIUM / VKP-03-480-PREMIUM

Parameter VKP-01-480-PREMIUM (1-Phase) VKP-03-480-PREMIUM (3-Phase)
Rated Input Voltage 100 VAC – 275 VAC, 1 Phase 380–415 VAC ±10%, 3 Phase
Frequency 50–60 Hz 50–60 Hz
Maximum Surge Handling Capacity 480 kA (8/20 µs) 480 kA (8/20 µs)
Display 128×64 OLED + Green/Red LED 128×64 OLED + Green/Red LED
Surge Current Detection Range 0.3–50 kA (8/20 µs) 0.3–50 kA (8/20 µs)
Alarm Connectivity Hooter output Hooter output
Remote Monitoring RS-485 / MODBUS RS-485 / MODBUS

Frequently Asked Questions — VKP Premium Digital Grounding Devices

What makes the VKP Premium range different from the standard VKP-01 and VKP-03?

Unlike the standard models, the Premium models have a 128×64 OLED display with green/red status LEDs, a wide-range surge current counter (0.3–50 kA), hooter alarm connectivity, and RS-485 MODBUS remote monitoring.

What does the RS-485 MODBUS interface allow?

The RS-485 interface with MODBUS protocol enables the VKP Premium device to share status data—such as surge counts, device health, and operational status—with building management systems (BMS), SCADA platforms, and remote monitoring servers. This makes it possible to monitor the grounding device remotely without visiting the installation.

Can the VKP Premium devices integrate with a SCADA system?

Yes, the RS-485 interface allows VKP Premium devices to connect as MODBUS slave devices within existing SCADA and BMS platforms.

Does the hooter alarm activate for every surge, or only above a threshold?

The hooter alarm activates for surge events, but for specific threshold settings, please consult Rasnal directly for tailored guidance.

Are VKP Premium devices suitable for outdoor or harsh environments?

Yes, VKP devices meet Indian Military Standard JSS 55555-2012 and IEC 60068-2-38:2009, operating from -40°C to +90°C. For outdoor use, an IP66-rated enclosure variant is available.

Yes, VKP devices meet Indian Military Standard JSS 55555-2012 and IEC 60068-2-38:2009, operating from -40°C to +90°C. For outdoor use, an IP66-rated enclosure variant is available.