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SurgeStop+ 2.4kV-24kV Power System Protection RC Surge Snubber

Surge Snubber for Medium Voltage Generator or Transformer Neutral

surge snubber

   SurgeStop Information

The APT Surge Snubber is designed to protect the insulation of medium voltage generators, transformers, and motors by reducing the rate of rise of the surge wave in the event of switching or lightning surges. Having an APT Surge Snubber installed will protect your equipment against the damage, chaos, and hazards that can be associated with switching and lightning surges.

   Product Features

  • Station Class Surge Arresters
  • Custom sizes for enclosures allow RC Surge Snubbers to be mounted in any position
  • Low loss dielectric design
  • High transient voltage withstand
  • 10 seconds overvoltage rating suitable for use with 10 seconds rated neutral grounding resistors
  • For use in 50 Hz or 60 Hz Applications

   Product Specifications

  • System line-line voltage up to 24kV
  • System line-ground voltage up to 13.86kV
  • Surge Level up to 90kV*
  • Time to reduce residual voltage to less than 50V after de-energizing is 5 minutes
  • Ambient temperature ratings from -40° to +50° Celsius
  • Available in NEMA 1 for indoor applications or NEMA 3R for outdoor applications
  • Cable entry from top or bottom
  • Capacitance per phase from 0.083 µF to 0.5 µF*
  • Resistance per phase 34 MΩ*

* Dependent on System Voltage

Product Literature

Engineering Bid Specifications

Installation Drawings & Diagrams

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SURGESTOP+

RC Surge Snubber

2.4kV - 24kV Power System Protection

Designed to protect medium-voltage generators, transformers, and motors by reducing the rate of rise of damaging switching and lightning surge waves.

SurgeStop+ RC surge snubber
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Voltage Range
2.4kV - 24kV
Line-Ground Voltage
Up to 13.86kV
Surge Level
Up to 90kV*
Residual Voltage
<50V in 5 Minutes
Enclosures
NEMA 1 & 3R
Capacitance
0.083µF - 0.5µF*

Key Specifications

Voltage
2.4kV - 24kV
L-G Voltage
Up to 13.86kV
Surge Level
Up to 90kV*
Residual Voltage
<50V in 5 Min.
Enclosures
NEMA 1 & 3R
Capacitance
0.083µF - 0.5µF*

Overview

SurgeStop+ is an RC surge snubber designed to protect the insulation of medium-voltage generators, transformers, and motors from damaging electrical transients.

By reducing the rate of rise of switching and lightning surge waves, SurgeStop+ helps limit electrical stress before damaging transient voltages reach critical equipment insulation.

Available in a range of enclosure and mounting configurations, SurgeStop+ can be engineered for indoor or outdoor medium-voltage applications.

Explore Configurations

Standard Construction

SurgeStop+ RC surge snubber enclosure
  1. 01 Custom Enclosure Sizes
  2. 02 NEMA 1 & 3R Protection
  3. 03 Flexible Mounting Positions
  4. 04 Top or Bottom Cable Entry

Final configuration may vary by project requirements.

Why It Matters

Equipment Protection

Helps protect critical insulation from damaging electrical transients.

Transient Control

Reduces the rate of rise of switching and lightning surge waves.

Designed to Perform

Low-loss design with high transient voltage withstand capability.

Reliable Operation

Engineered for 50 Hz or 60 Hz medium-voltage applications.

How It Works

RC surge snubber diagram A resistor and capacitor network connects the protected electrical system to ground to help control transient surge waves. SYSTEM TRANSIENT R C RC SURGE SNUBBER PROTECTED

The SurgeStop+ RC network helps slow the steep rise of switching and lightning transients before they can place damaging electrical stress on equipment insulation.

View Detailed Diagram Explore Configurations
SurgeStop+ RC surge snubber

Need Help Selecting the Right Configuration?

Not sure which system voltage, enclosure, mounting arrangement, or options your application requires? Our sales team can help you select the right SurgeStop+ RC Surge Snubber for your project.

System Voltage Enclosure Mounting Monitoring

Our team can help with:

  • Application review
  • Configuration recommendations
  • Customized solutions
  • Fast response from our sales team
Talk to a Product Specialist

Technical Specifications

System Voltage
Up to 24kV line-line
Line-Ground Voltage
Up to 13.86kV
Surge Level
Up to 90kV, system dependent
Residual Voltage
<50V within 5 minutes
Ambient Temperature
-40°C to +50°C
Standard Enclosure
NEMA 1 indoor / NEMA 3R outdoor
Capacitance Per Phase
0.083µF–0.5µF, system dependent
Resistance Per Phase
34 MΩ, system dependent

Applications

Transient surge protection for medium-voltage generators, transformers, motors, and rotating equipment.

Generator Protection

Helps protect generator insulation from damaging electrical transients.

Transformer Protection

Reduces transient voltage stress on transformer insulation.

Motor Protection

Helps protect medium-voltage motor insulation from steep-front transients.

Other Rotating Machines

Transient protection for applicable medium-voltage rotating equipment.

Application suitability depends on system voltage, equipment requirements, and transient protection needs.

FAQ

What is an RC surge snubber?

An RC surge snubber uses a resistor-capacitor network to reduce the rate of rise of damaging transient voltage waves in medium-voltage electrical systems.

What equipment does SurgeStop+ protect?

SurgeStop+ is designed to help protect the insulation of medium-voltage generators, transformers, motors, and other applicable rotating machines.

What voltage range is available?

SurgeStop+ is available for medium-voltage systems with line-to-line voltage up to 24kV and line-to-ground voltage up to 13.86kV.

Can SurgeStop+ be used outdoors?

Yes. SurgeStop+ is available in NEMA 1 enclosures for indoor applications and NEMA 3R enclosures for outdoor applications.

Can SurgeStop+ be used with a neutral grounding resistor?

Yes. SurgeStop+ has a 10-second overvoltage rating suitable for use with 10-second rated neutral grounding resistors such as the APT LZR-Series.

Technical Resources

Brochure

View Online

15kV Specification

View Online

Generator Diagram

View Online

Transformer Diagram

View Online

Ready to Get Started?

We are committed to providing expert support for your transient surge protection needs. Our team can help review system voltage, enclosure, mounting, protection, and documentation requirements.

Contact our sales team today to discuss your application. We’ll help you find the right SurgeStop+ configuration for your system.

Request a Quote