DEHNguard® modular E (Y)PV SCI 1500
Multipole / single-pole PV Arresters with three-step d.c. Switching Device
- Prewired modular complete unit for use in photovoltaic systems up to 1500 V consisting of a base part and plug-in protection modules
- Combined disconnection and short-circuiting device with safe electrical isolation in the protection module (patented SCI principle)
- New design for safe use in PV systems up to 1500 V
- Tested to EN 50539-11
- Suitable for use in all PV systems in accordance with IEC 60364-7-712
Version
DEHNguard ME YPV SCI 1500: Modular multipole surge arrester with three-step d.c. switching device for PV systems up to 1500 V
DEHNguard SE PV SCI 1500: For PV systems up to 1500 V solidly earthed on the d.c. side
DEHNguard ME/SE (Y)PV SCI 1500 FM: With remote signalling contact for monitoring device (floating changeover contact)
DEHNguard SE PV SCI 1500: For PV systems up to 1500 V solidly earthed on the d.c. side
DEHNguard ME/SE (Y)PV SCI 1500 FM: With remote signalling contact for monitoring device (floating changeover contact)
Details
The modular DEHNguard ME YPV SCI 1500 (FM) and DEHNguard SE PV SCI 1500 (FM) surge arresters are specifically designed for protecting equipment in photovoltaic systems up to 1500 V. The new design of these arresters of the DEHNguard … SCI family meets the increased requirements regarding such a high voltage range; this is reflected in the increased width (1.5 modules), additional terminal covers and a special terminal slot. The patented three-step d.c. switching device (SCI principle) makes these arresters particularly safe so that they fulfil all requirements in modern photovoltaic systems. The devices are specifically designed for PV systems with high system voltages (up to 1500 V). As with DEHNguard modular (Y)PV SCI … (FM) arresters, which are available as 150 V, 600 V, 1000 V and 1200 V versions, they cover the most common voltage levels.
The application features of the modular Red/Line family design are similarly unique as the three-step d.c. switching device. The module locking system firmly fixes the protection modules to the base part. Neither shock nor vibration nor the enormous forces of discharge affect the safe connection to the protection module. Nevertheless, the protection modules can be easily replaced without tools by simply pressing the easy-to-use module release button of the protection modules. Every protective path of DEHNguard modular E (Y)PV SCI 1500 (FM) and every protection module is mechanically coded to ensure against installing the incorrect module. To fulfil the special requirements in photovoltaic systems, a fault-resistant Y circuit consisting of three protective paths of the varistor and a combined disconnection and short-circuiting device are integrated in a single device.
This synergy further reduces the probability of an arrester failure in case of the operating and fault states which have to be considered in photovoltaic systems. This ensures that the arrester is protected in case of overload. Even in case of operating voltages up to 1500 V d.c., a switching arc, which is likely to occur when a conventional disconnector (for a.c. application) of a surge protective device is triggered, is extinguished immediately without risk.
DEHNguard SE PV SCI 1500 (FM) arresters are specifically designed for PV systems solidly earthed on the d.c. side; this type of earthing is meanwhile required e.g. by manufacturers of special thin-film modules or for legal or normative reasons in some regions.
Since either the positive or the negative pole of the PV generator is solidly earthed, the optimised DEHNguard SE PV SCI 1500 (FM) arresters (one protection module is removed from the Y circuit) may be used if the distance from the earthing point does not exceed 5 m.
The green and red indicator flags show the availability of every protective circuit. Apart from this visual indication, DEHNguard ME YPV SCI 1500 FM und DEHNguard SE PV SCI 1500 FM arresters also feature a three-pole remote signalling terminal. With its floating changeover contact, the remote signal can be used as make or break contact according to the particular circuit concept.
The application features of the modular Red/Line family design are similarly unique as the three-step d.c. switching device. The module locking system firmly fixes the protection modules to the base part. Neither shock nor vibration nor the enormous forces of discharge affect the safe connection to the protection module. Nevertheless, the protection modules can be easily replaced without tools by simply pressing the easy-to-use module release button of the protection modules. Every protective path of DEHNguard modular E (Y)PV SCI 1500 (FM) and every protection module is mechanically coded to ensure against installing the incorrect module. To fulfil the special requirements in photovoltaic systems, a fault-resistant Y circuit consisting of three protective paths of the varistor and a combined disconnection and short-circuiting device are integrated in a single device.
This synergy further reduces the probability of an arrester failure in case of the operating and fault states which have to be considered in photovoltaic systems. This ensures that the arrester is protected in case of overload. Even in case of operating voltages up to 1500 V d.c., a switching arc, which is likely to occur when a conventional disconnector (for a.c. application) of a surge protective device is triggered, is extinguished immediately without risk.
DEHNguard SE PV SCI 1500 (FM) arresters are specifically designed for PV systems solidly earthed on the d.c. side; this type of earthing is meanwhile required e.g. by manufacturers of special thin-film modules or for legal or normative reasons in some regions.
Since either the positive or the negative pole of the PV generator is solidly earthed, the optimised DEHNguard SE PV SCI 1500 (FM) arresters (one protection module is removed from the Y circuit) may be used if the distance from the earthing point does not exceed 5 m.
The green and red indicator flags show the availability of every protective circuit. Apart from this visual indication, DEHNguard ME YPV SCI 1500 FM und DEHNguard SE PV SCI 1500 FM arresters also feature a three-pole remote signalling terminal. With its floating changeover contact, the remote signal can be used as make or break contact according to the particular circuit concept.
