Surge Protector

Novaris SL range of plug-in signal line protectors provide surge protection for most twisted pair signalling schemes. Ideal for the protection of PLCs, instrumentation, fire and security systems, telecommunications and telemetry systems, railway signalling, SCADA and other industrial monitoring and control equipment

The Novaris SL2 and SLH2 range provides 20kA high energy surge protection for balanced pair signaling circuits, used in a wide range of industrial monitoring and control equipment. Applications include SCADA, PLC, fire and security systems, telecommunications and railway signaling. The SL2 is designed for protecting communication circuits with a 3dB of 60Mhz and the SLH2 is designed for instrumentation power circuits requiring up to 2.5A of current.. The SL2 and SLH2 range integrates a fault indicator and external alarm connection for surge protection monitoring. They are available with a -EC90 option to isolate the earth connection for protection of field equipment. The protection and alarm circuit is contained in a replaceable cartridge to minimise downtime.

The SSP6A series surge protectors complement the SL range for applications of load currents up to 6A. Typical applications may include power supplies, instrumentation and other low voltage requirements up to 6A. With two different base options the SSP6A protectors offer either direct earthing via DIN rail, for the most effective, low impedance earth connection (-G base) or a connection via GDT to the DIN rail, offering isolation under normal conditions and equipotential bonding during a surge (-EC90 base). The plug-in design provides simple and rapid replacement and testing – no rewiring needed. This also provides a convenient method of field equipment isolation if required.

Novaris threaded instrument protectors provide surge protection for instrumentation and are designed to be installed directly at the field equipment providing protection against induced surges and transients. They are suitable for two, three and four wire instruments. SLT models are available for signalling systems up to 200V. The multistage design provides a high energy gas discharge tube (GDT) as primary protection for common mode disturbances, commonly associated with lightning strikes and power system earth faults and a secondary metal-oxide varistor clamping stage across the signal lines. This combination provides very robust surge protection with high transient suppression and low let-through voltages. In addition protection is provided for cable screens which may be open circuit at the instrument.

The SLT-Y offers a solution when a field instrument has no free cable entry to accommodate the SLT threaded instrument protector. The Novaris Y-piece adapter accommodates the SLT threaded instrument protector and cable gland. The SLT-Y is available in the same thread types as the threaded instrument protectors. The IS-SLT-Y-M20 is an IEC Ex and ATEX EX d certified version of the Y-Adapter, and so may be installed in Ex d rated instruments without loss of integrity.

Novaris SLM offers protection for up to 12 signal lines. Each of the 12 lines have the protection referenced to ground making it an excellent choice for parallel signaling busses. Typical applications include process control, telemetry, PLC, and irrigation systems.

Novaris DB Protectors provide protection for serial protocol systems in RS232 and RS485 applications. These units are housed in a headshell enclosure. The DB Protectors have a 90V earth isolation to prevent ground loops.

Novaris C-Bus™ RJ45 surge protection products are specifically designed for the protection of C-Bus™ RJ45 communications wiring. The Novaris C-Bus™ RJ45 network protector is designed with primary protection elements of the C-Bus™ network pairs and secondary protection elements to provide protection for the Remote Override pairs. The Novaris C-Bus™ protector contains integrated 230V isolation to prevent equipment damage during power to earth faults but also provide efficient earth bonding during a surge event.

Use SD – MULTIMOV high energy surge diverters for single phase point of entry protection at main switchboards. Models are available for all wiring systems worldwide. SD MULTIMOV surge diverters feature a parallel redundant arrangement of high energy metal oxide varistors (MOVs), thus promoting long life and exceptional surge handling capacity. In the event of a varistor failure the remaining segments continue to provide protection. A digital display confirms the device rating by displaying the percentage active of the redundant segments. The display indicates segment status and thermal overload. A failsafe alarm contact allows for remote monitoring.

Use MULTIMOV all mode high energy surge diverters for point of entry protection at main switchboards, especially where N-PE protection is required. MULTIMOV surge diverters feature a parallel redundant arrangement of high energy metal oxide varistors (MOVs), thus promoting long life and exceptional surge handling capacity. In the event of a varistor failure the remaining segments continue to provide protection. The LED display indicates segment status and indicates normal operation when all LEDs are brightly lit.

Novaris SDH High Voltage Surge Diverters have been engineered for system voltages above 600VRMS. Typical applications include aviation runway lighting, mining and railway industries.

The Novaris Surge Circuit Breakers are designed specifically for short circuit protection of MOV based Type I and Type II (point of entry and secondary) shunt connected surge diverters. The SCB models have a continuous current rating of 3A to power the Novaris active alarm circuits but will not trip for large transient surges.

Novaris SFD surge filters provide the highest level of protection for critical and essential equipment up to 32A per phase. Their compact design makes them an ideal choice for space restricted applications.

The Novaris HSF is a hybrid surge filter with primary and secondary hybrid surge protection components plus a low pass filter. The hybrid design means the filter can continuously withstand phase to phase voltage between its phase and neutral terminals yet its performance equals that of other Novaris surge filters. This makes it ideal for applications where voltage regulation is poor and power line faults common.

Novaris SGF surge filters provide optimum Class I MSB and DB protection using robust spark gap technology in combination with a low pass L-C filter for critical equipment up to 250A per phase.

Novaris SSP protectors are suitable for installation in circuits up to 63A. The SSP range has been engineered to provide excellent performance in an economical package. Protection is provided for all combinations of lines (L-N, L-PE, N-PE) ensuring the maximum level of protection is achieved at all times. Series surge protectors house the shunt (parallel) connection of the protection components internally within the device. This reduces the connection impedance to a minimum to guarantee optimal performance in all installations.

Use Spark Gap Surge Diverters for point of entry protection at main switchboards where direct strike protection is required. Carbon disk spark gaps are a robust and proven technology designed to handle long duration surges. The low resistance design minimises the energy dissipation within the device. Two models are available with either 50 kA or 110 kA of impulse current handling per phase for even the most extreme lightning environments. The Novaris spark gap diverters are a sealed unit and do not exhaust hot ionised gas into the switchboard.

Novaris SDD2 DC Surge Diverters offer an ideal solution for systems up to 150 Volts DC two phase systems. The SDD2 diverters are housed in a DIN compliant, fail-safe metal enclosure. Other voltages are available on request.

Novaris slimline surge protection devices (SPDs) provide surge protection for most twisted pair signaling schemes. Certified to be intrinsically safe Novaris IS SPDs can be installed in the hazardous zone or the field side of the IS barrier. This not only provides protection for the PLC or RTU I/O, it also provides protection for the IS barrier. Novaris ‘IS-’ products are certified intrinsically safe according to IEC Ex and ATEX; the group IIC T4 certification makes it acceptable for use with all gas/air mixtures. With two different base options the SL protectors offer either direct earthing via DIN rail, for the most effective, low impedance earth connection (-G base) or a connection via GDT to the DIN rail, offering isolation under normal conditions and equipotential bonding during a surge (-EC90 base).

The IS-SSP6A intrinsically safe series surge protectors complement the IS-SL range for applications of load currents up to 6A. Typical applications may include power supplies, instrumentation and other low voltage requirements up to 6A. Novaris ‘IS-’ products have been certified intrinsically safe according to IEC Ex and ATEX; the group IIC T4 certification makes it acceptable for use with all gas/air mixtures. With two different base options the SL protectors offer either direct earthing via Din rail, for the most effective, low impedance earth connection (-G base) or a connection via GDT to the DIN rail, offering isolation under normal conditions and equipotential bonding during a surge (-EC90 base). Novaris ‘IS-’ products are certified intrinsically safe according to IEC Ex and ATEX; the group IIC T4 certification makes it acceptable for use with all gas/air mixtures. With two different base options the SL protectors offer either direct earthing via DIN rail, for the most effective, low impedance earth connection (-G base) or a connection via GDT to the DIN rail, offering isolation under normal conditions and equipotential bonding during a surge (-EC90 base).

The IS-LCP provides protection for both 4-wire and 6-wire loadcells as well as the measuring instrument. The LCP is contained within an IP65 enclosure, or alternatively it may be supplied as an assembled PCB. As well as having IS certification the IS-LCP is engineered for installation into a loadcell circuit without affecting calibration.