Product Overview

The SIS Pillar: Electrical Disconnection System is an electrical isolation system specifically designed for lighting columns and illuminated sign applications. Each pole is fitted with a small sensor that, in the event of an impact, communicates with the monitor board, triggering complete Low Voltage (LV) and Extra Low Voltage (ELV) isolation within 0.2 seconds. The monitor boards are DIN rail mounted within a standard street lighting cabinet, providing electrical isolation to individual columns or circuits. This system is fully compliant with EN12767:2007 (Electrical Isolation of Passively Safe Structures) and can be used with any passively safe structure. Being an above-ground system, it offers benefits in that it is easier to check and can also provide cost benefits over an underground option.

Key Benefits

• Fully compliant with EN12767:2007 (Electrical Isolation of Passively Safe Structures).
• Successfully tested at MIRA.
• Disconnection time officially proven with a timing device.
• Suitable for use with NE, LE, and HE Passively safe columns.
• Appropriate for use in non-passive columns.
• Guaranteed electrical isolation of all volts within 0.2 seconds of impact.
• Guaranteed isolation even if the structure has not detached from its base.
• Isolates all volts even if the impact sensor is destroyed.
• Provides isolation of individual structures or circuits.
• Provides fault outputs for impact, voltage drop, and other potential maintenance issues.
• Fault outputs can be connected to CMS or RMS systems.
• Automatic restart and recheck after power failure.
• Impact sensors easily replaced after impact.
• Simple means of re-energising the circuit while the impacted structure remains isolated.
• Enables simple isolation of individual columns for maintenance works.
• Simple to test periodically.

Applications

• Street Lighting Columns.
• Illuminated Signs.
• Information Signs.
• CCTV Columns.
• VAS Signs.
• VMS Signs.

Features & Construction

• System incorporates a local feeder pillar based on one Solo unit for each protected circuit.
• Solo units are DIN rail mounted, equivalent to a double pole circuit breaker.
• Combined monitoring and power supply in one unit.
• Positive indication by LED of activation due to impact.
• Complete electrical isolation of a whole structure or circuit, including the impact sensor.
• Provides outputs for impact or float switch fault (F1) and system failure (F2).
• Units are fitted with dual processors to improve reliability and operation.
• Sensor is an IP64 rated mechanical inertia device operating at 10 to 16G, drawing no power.
• System is designed to be wired to activate individual circuit breakers operating individual circuits or structures.

Technical Specifications

Property	Details
Compliance	EN12767:2007, CE and environmentally tested in accordance with TR2130
Isolation Speed	Within 0.2 seconds (guaranteed)
Sensor Operating Range	10 to 16G
Sensor Rating	IP64
Solo Unit Mounting	DIN rail mounted, equivalent to a double pole circuit breaker
Impact Sensor Cable Distance	System can operate with impact sensor located 3km from SIS monitor board

Installation & Maintenance

• Designed to be fitted into a local feeder pillar operating the protected street furniture.
• Solo units are wired to activate individual circuit breakers operating individual circuits or structures.
• Being an above-ground system, it is easier to check and can provide cost benefits over an underground option.
• Simple to test at commissioning stage and for periodic maintenance.
• Impact sensor also provides a means of confirming system operation during commissioning and routine maintenance.