DEHNguard® SE H ... FM
Single-pole Surge Arrester with "Lifetime Indication“
- Universal surge arrester comprising a base part and a plug-in protection module
- Prewired single-pole surge arrester with clear "Lifetime Indication“
- Three-step “Lifetime Indication“ (green-yellow-red) linked with remote signalling contact
- High discharge capacity Imax up to 65 kA (8/20 μs)
- Prompts the user in time <YELLOW> to replace the protection module in case of imminent arrester overload; early warning system
- The arrester is fully operational until the protection module is replaced and is thus suited for use in condition monitoring systems
- Energy coordination with other arresters of the Red/Line product family
- Easy replacement of protection modules without tools due to module locking system with module release button
Version
DEHNguard SE H LI ... FM: Pluggable single-pole surge arrester with three-step early warning system (green-yellow-red) comprising a base part and a plug-in protection module; with remote signalling contact for monitoring unit (floating changeover contact)
DEHNguard SE H 1000 FM: Pluggable single-pole surge arrester with a high discharge capacity comprising a base part and a plug-in protection module; with remote signalling contact for monitoring unit (floating changeover contact)
DEHNguard SE H 1000 VA FM: Pluggable single-pole surge arrester with a high discharge capacity and a varistor connected in series with a spark gap comprising a base part and a plug-in protection module; with remote signalling contact for monitoring unit (floating changeover contact)
DEHNguard SE H 1000 FM: Pluggable single-pole surge arrester with a high discharge capacity comprising a base part and a plug-in protection module; with remote signalling contact for monitoring unit (floating changeover contact)
DEHNguard SE H 1000 VA FM: Pluggable single-pole surge arrester with a high discharge capacity and a varistor connected in series with a spark gap comprising a base part and a plug-in protection module; with remote signalling contact for monitoring unit (floating changeover contact)
Details
The single-pole type 2 DEHNguard SE H LI … FM surge arresters with a functional Red/Line design provide a high degree of safety and comfort and ensure maximum availability of electrical installations.
The three-step "Lifetime Indication“ provides reliable information on the operating state of the surge protective device. The yellow indication shows that a certain energy has pre-damaged the arrester during its lifetime. Moreover, the remote signalling contact is activated so that the arrester can be easily integrated condition monitoring systems. During this yellow indication, the connected electrical equipment is still protected against surges since the protection module is fully operational. Now the protection module can be replaced in time (without disconnecting the mains voltage and removing the distribution board cover) – Before further energies overload the arrester and the installation is unprotected! Thus, the lifetime between commissioning (green indication) and disconnection (red indication) of DEHNguard SE H LI … FM consists of two periods: After typically 70% of the total nominal discharge current load, the indication changes from green to yellow. Consequently, about 30% of the total load capacity remain for the yellow phase during which the surge protective device is fully operational. This makes this indication an ideal early warning system!
The single-pole devices are available for voltages from 275 V to 1000 V a.c. and are thus universally applicable. In addition, the product family has a high discharge capacity Imax up to 65 kA (8/20 µs) and is thus more powerful across all voltage levels than conventional type 2 arresters.
The devices feature the special modular Red/Line family design with a width of 1.5 modules to implement the variety of functions. They can be used as a single device or in combination with other devices and always provide adequate protection. All necessary components such as earthing clips EB 1 ... 1.5 with modular dimensions of 1.5 modules are available as accessory to ensure the correct connection for the relevant system configuration as per IEC 60364-5-53.
Consequently, the intelligent DEHNguard SE H LI … FM family allows to protect installations which require maximum availability such as data centres, power plants or wind turbines against surges. Planned maintenance for type 2 surge protective devices can be easily and efficiently performed in all low-voltage installations.
Both the three-step monitoring unit of the surge protective devices and the coded plug-in protection module types underline the high degree of safety of the arrester and damage caused by installing an incorrect module can be virtually excluded.
In addition to the standard three-step visual indication, the arresters feature a three-pole remote signalling terminal. With its floating changeover contact, the remote signal can be used as a break or make contact according to the particular circuit concept.
The DEHNguard SE H 1000 FM type is a special arrester of the DEHNguard ... H ... series. Compared to the LI devices, whose designation includes the abbreviation "LI", it features a two-step visual indication which changes from green to red as soon as the max. load capacity of the arrester is reached and activates the floating changeover contact.
The DEHNguard SE H 1000 VA FM type is a particularly powerful type 2 arrester designed for high voltages and discharge currents. Due to the high nominal voltage and the series connection of a varistor and a gas discharge tube, it is ideally suited for wind turbines (rotor and inverter), but also for other applications such as PV systems, railway systems or cable cars with high voltages where absence of leakage current is required.
The three-step "Lifetime Indication“ provides reliable information on the operating state of the surge protective device. The yellow indication shows that a certain energy has pre-damaged the arrester during its lifetime. Moreover, the remote signalling contact is activated so that the arrester can be easily integrated condition monitoring systems. During this yellow indication, the connected electrical equipment is still protected against surges since the protection module is fully operational. Now the protection module can be replaced in time (without disconnecting the mains voltage and removing the distribution board cover) – Before further energies overload the arrester and the installation is unprotected! Thus, the lifetime between commissioning (green indication) and disconnection (red indication) of DEHNguard SE H LI … FM consists of two periods: After typically 70% of the total nominal discharge current load, the indication changes from green to yellow. Consequently, about 30% of the total load capacity remain for the yellow phase during which the surge protective device is fully operational. This makes this indication an ideal early warning system!
The single-pole devices are available for voltages from 275 V to 1000 V a.c. and are thus universally applicable. In addition, the product family has a high discharge capacity Imax up to 65 kA (8/20 µs) and is thus more powerful across all voltage levels than conventional type 2 arresters.
The devices feature the special modular Red/Line family design with a width of 1.5 modules to implement the variety of functions. They can be used as a single device or in combination with other devices and always provide adequate protection. All necessary components such as earthing clips EB 1 ... 1.5 with modular dimensions of 1.5 modules are available as accessory to ensure the correct connection for the relevant system configuration as per IEC 60364-5-53.
Consequently, the intelligent DEHNguard SE H LI … FM family allows to protect installations which require maximum availability such as data centres, power plants or wind turbines against surges. Planned maintenance for type 2 surge protective devices can be easily and efficiently performed in all low-voltage installations.
Both the three-step monitoring unit of the surge protective devices and the coded plug-in protection module types underline the high degree of safety of the arrester and damage caused by installing an incorrect module can be virtually excluded.
In addition to the standard three-step visual indication, the arresters feature a three-pole remote signalling terminal. With its floating changeover contact, the remote signal can be used as a break or make contact according to the particular circuit concept.
The DEHNguard SE H 1000 FM type is a special arrester of the DEHNguard ... H ... series. Compared to the LI devices, whose designation includes the abbreviation "LI", it features a two-step visual indication which changes from green to red as soon as the max. load capacity of the arrester is reached and activates the floating changeover contact.
The DEHNguard SE H 1000 VA FM type is a particularly powerful type 2 arrester designed for high voltages and discharge currents. Due to the high nominal voltage and the series connection of a varistor and a gas discharge tube, it is ideally suited for wind turbines (rotor and inverter), but also for other applications such as PV systems, railway systems or cable cars with high voltages where absence of leakage current is required.
