Grid and system protection relays

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Grid and system protection relays | Choosing the Right Protection Relay
Protection relays can be divided into two main categories: digital relays and electromechanical relays. Digital protection relays Digital protection relays, also known simply as "digital relays", are made up of an electronic system with microprocessors. These microprocessors make it possible to analyze various grid parameters, such as voltage, intensity, or current to detect faults in an industrial control system. Thanks to microprocessors, these relays...
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phase sequence protection relay
phase sequence protection relay
SIU-C

Trigger voltage: 24 V - 230 V

SIU-C GRID INTERCONNECTION The SIU-C represents the best and most precise protection solution for transformers and electrical machines in high, medium, and low-voltage distribution ...

grid and system protection relay
grid and system protection relay
NA003-M64

Trigger voltage: 24, 110 V

Grid protection monitoring relay RE series; Frequency and voltage monitoring; Grid and system protection; Functionally Safe; Measuring ...

grid and system protection relay
grid and system protection relay
NA003.COM-64

Trigger voltage: 24 V - 110 V

Grid and system protection monitoring relay RE series; Frequency and voltage monitoring; Functional safety; Measuring voltage 3 x 400/230V AC; Supply voltage 24V DC, ...

earth-leakage protection relay
earth-leakage protection relay
DER4B/2D

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

... Din modules Dossena presents the DER4B range, the new generation of type B differential toroid relays. DER4B is recommended for electrical protection in the tertiary sector, where devices that generate ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4B/2I

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

... Recessed 96x96mm Dossena presents the DER3B range, the new generation of type B differential toroid relays. DER3B is recommended for electrical protection in the tertiary sector, where devices that ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/0D

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

The residual current relays of the DER4 Dossena range can be used on LV networks in alternating current of the TT and TN type. They make it possible to achieve adequate selectivity and residual current protection ...

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DOSSENA
differential protection relay
differential protection relay
DER4/0E

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

The residual current relays of the DER4 Dossena range can be used on LV networks in alternating current of the TT and TN type. They make it possible to achieve adequate selectivity and residual current protection ...

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DOSSENA
differential protection relay
differential protection relay
DER4/0I

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

The residual current relays of the DER4 Dossena range can be used on LV networks in alternating current of the TT and TN type. They make it possible to achieve adequate selectivity and residual current protection ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/1D

Tripping current: 0.03 A - 30 A
Trigger voltage: 48 V - 400 V

... strict regulations in force (CEI EN 60947-2:2019) thus satisfying a double need: system safety and service continuity. Dossena offers a complete range of differential relays rich in ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/1DL

Tripping current: 0.03 A - 0.3 A
Trigger voltage: 48 V - 400 V

... toroid relays can be used on TT and TN type LV AC networks. The DER4/1DL relay is designed and built for use in environments where human presence is not necessary or absent (radio link switchboards, ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/1I

Tripping current: 0.03 mA - 30,000 mA
Trigger voltage: 48 V - 400 V

... stringent regulations in force (IEC 60947-2:2019) thus satisfying a dual need: system safety and service continuity. Dossena offers a complete range of differential relays rich in ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER4/2D

Tripping current: 0.03 mA - 30,000 mA
Trigger voltage: 48 V - 400 V

... stringent regulations in force (IEC 60947-2:2019) thus satisfying a dual need: system safety and service continuity. Dossena offers a complete range of differential relays rich in ...

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DOSSENA
earth-leakage protection relay
earth-leakage protection relay
DER3/2I

Tripping current: 0.03 mA - 30,000 mA
Trigger voltage: 48 V - 400 V

... stringent regulations in force (IEC 60947-2:2019) thus satisfying a dual need: system safety and service continuity. Dossena offers a complete range of differential relays rich in ...

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DOSSENA
insulation protection relay
insulation protection relay
DCG-UBCH2

Tripping current: 30 mA
Trigger voltage: 250 V

GYDCG-UBCH2 series products are used for on-line monitoring dc floating land system is thecathode of insulation resistance of thedevice, it is based on the principle of unbalanced bridge, toavoid the balance bridge across ...

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Chongqing Blue Jay Technology Co. Ltd
current protection relay
current protection relay
GYID Series

... Monitor the insulation state of all internal Class Bvoltage(high voltage side)components of the 0~1000VDC DC floating system(IT system). Measuring battery pack DC voltage Continuous measurement of insulation ...

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Chongqing Blue Jay Technology Co. Ltd
voltage protection relay
voltage protection relay
ZJJ series

... monitoring relay monitorsthe insulation of the DC bus, and it sendsalarm signal when the bus-to-groundinsulation drops to a certain value,also it ispanel mounted type,and the relay has a high-sensitivity ...

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Chongqing Blue Jay Technology Co. Ltd
arc flash protection relay
arc flash protection relay
AFR-M

Tripping current: 5 A
Trigger voltage: 220 V

... connected to one relay. It used to limits damages to equipment, improve safety, avoid and protect personnel injuries. It’s also can be used as a stand-alone arc protection relay or ...

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Chongqing Blue Jay Technology Co. Ltd
arc flash protection relay
arc flash protection relay
AFR-3

AFR-3 Arc flash relays are mainly used to detect arc faults in electrical systems and protect equipment and personnel in electrical systems from arc faults. The arc flash protection ...

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Chongqing Blue Jay Technology Co. Ltd
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