PROTEC Z+ / PROTEC Z Surge Suppressor
Advanced Switching Surge Protection
Why Choose the Protec Z Surge Suppressor?
For optimal performance, consider the protect z surge suppressor in your electrical setup.
The Protec Z Surge Suppressor is a vital component for safeguarding your electrical systems. By incorporating the Protec Z Surge Suppressor, you ensure that your equipment remains protected from damaging voltage spikes.
The PROTEC Z and PROTEC Z+ series are advanced Zinc Oxide RC (Resistor-Capacitor) Surge Suppressors
In addition to providing the same core switching transient protection as the ZORC, the PROTEC Z+ model offers advanced safety and monitoring capabilities. Consequently, this series serves as a specialized solution for eliminating destructive surges that occur when switching high-voltage equipment like motors and generators.
Protec Z Family
The PROTEC Z family consists of surge suppressors designed to protect medium voltage motors, generators, and transformers against transient switching surges. Specifically, these suppressors alter circuit parameters to ensure that over-voltages remain suppressed within IEEE ratings. Furthermore, they are highly recommended for systems incorporating vacuum, SF6, and metal vapor contactors or breakers. Finally, to suit various needs, PROTEC Z units are available in compact and standard versions for LV, MV, and HV applications.
|
Feature |
Specification |
Details |
|---|---|---|
|
Primary Protection |
Switching Transients/Surges |
Protects against surges generated by switching operations (e.g., VCBs). |
|
RC Circuit |
0.2 µF Capacitor, 30 Ω Resistor |
Identical core specifications to the ZORC. |
|
Voltage Range |
MM3 / PM3 (5 kV – 13.8 kV) SSW |
A single unit can be used across this entire voltage range (e.g., 6.6kV, 11kV) as the capacitor is wound to withstand the maximum system voltage (13.8kV), and the RC circuit remains tuned for high-frequency transients. |
|
Insulation Withstand |
95 kV BIL (North/South American/High-BIL) |
Required for 11kV systems in some regions (like Australia). This version has larger bushing sizes. Note: A compact 8-11kV version for the African market may have a lower 75kV BIL to fit smaller terminal boxes. |
|
Advanced Features |
PROTEC Z+ Model (Standard) |
Includes Partial Discharge Monitoring and a Pressure-Activated Safety Switch for enhanced system safety. |
|
Safety Switch |
Dry Contact (N/O and N/C) |
The safety switch is a pressure-activated dry contact. It triggers if the internal pressure rises by 0.5 bar due to factors like harmonics, long-duration overvoltages, or high external temperature. It can be wired to a latching alarm, PLC, or SCADA system to indicate a condition requiring inspection and prevent a catastrophic failure (similar to a Buchholz relay on a transformer). The switch returns to its normal state once the internal oil pressure is normalized. |
Commercial and Logistics
| Feature | Details |
|---|---|
| Manufacturing/Origin | Made in Europe  |
| Pricing | Contact us! |
| Warranty | 12-month warranty is provided for the PROTEC Z series |
| Payment Terms | Contact us for options |
When selecting a surge suppressor, consider factors such as voltage rating, response time, and energy absorption capability. These specifications help determine the effectiveness of the suppressor in protecting your equipment from transient voltages.
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Why using a Protec Z Surge Suppressor
Utilising a Protec Z Surge Suppressor helps in enhancing the longevity of your electrical devices. It effectively mitigates risks associated with electrical surges, making it an essential investment for your system’s reliability.
Gemini said
Here are the 5 key benefits, emphasizing how the PROTEC Z surge suppressor specifically delivers each advantage:
- Cost-Effective Dual Functionality: The PROTEC Z surge suppressor delivers a highly economical two-in-one solution. By combining robust transient switching protection with a built-in partial discharge (PD) sensor, the PROTEC Z surge suppressor saves you the expense and hassle of buying and installing separate systems.
- Targeted Industrial Protection: Designed specifically for critical infrastructure, the PROTEC Z surge suppressor effectively guards expensive industrial equipment. You can rely on the PROTEC Z surge suppressor to shield your motors, generators, and dry-type transformers from sudden and damaging transient switching voltage spikes.
- Continuous On-Line Monitoring: A major advantage of the PROTEC Z surge suppressor is its integrated PD sensor, which allows for real-time monitoring of winding insulation condition. Because the PROTEC Z surge suppressor performs this monitoring on-line while the equipment is actively running, you can assess equipment health without initiating costly operational shutdowns.
- Superior Frequency Response: When compared to traditional coupling capacitors typically used for PD analysis, the PROTEC Z surge suppressor operates with a much wider frequency response. This enhanced range makes the PROTEC Z surge suppressor a significantly more sensitive and effective diagnostic tool for your electrical systems.
- Deeper Visibility and Coverage: Thanks to its superior frequency response, the PROTEC Z surge suppressor is able to “see” much deeper into the windings of your equipment. This allows the PROTEC Z surge suppressor to provide vastly improved diagnostic coverage, eliminating the monitoring blind spots that have always been a weakness of conventional coupling capacitor sensors.