Eaton Cooper Power Series IEC Shielded Rear Coupling Surge Arrester DAI / DSA Series for DTS624 & DTS636 Tee Connectors

Product Specifications

Product Name/Series: Eaton Cooper Power Series IEC Shielded Rear Coupling Arrester (DAI/DSA Heavy-Duty Series)

System Compatibility Framework: Seamlessly bolts onto DTS624 (24 kV Class) & DTS636 (36 kV Class) Front Tee Cable Connectors

• 24 kV System Variant (DTS624 Companion): 125 kV Lightning Impulse Withstand / 54 kV AC Withstand.
• 36 kV System Variant (DTS636 Companion): 170 kV Lightning Impulse Withstand / 81 kV AC Withstand.

Continuous Base Current Capacity: Fully compatible with 630 A standard loads and 900 A overload configurations lasting up to 8 hours.

Short Circuit Fault Withstand: Rated up to 35 kA rms Symmetrical for 1 full second duration.

Mating Mechanical Interface: Fully integrated C-Interface complying completely with CENELEC 50180 and 50181 standards.

Available Housing & Voltage Matching Matrix

The Eaton Cooper Power series rear-inseparable coupling arrester architecture is tightly structured across precise voltage thresholds and cable diameters to complement the front-end connector layout:

• Low-Range 12 kV Grid Integration: Calibrated to protect conductor sizes ranging from 25 mm² to 300 mm² when connected to low-voltage class equipment terminal headers.
• Mid-Range 24 kV Distribution Matrix: Specifically matching conductor profiles from 25 mm² up to 300 mm² to cover standard multi-grounded pad-mounted transformer networks.
• High-Stress 36 kV Renewable Grid Matrix: Optimized to safely secure high-voltage cable structures from 25 mm² up to 240 mm², shielding solar array enclosures and wind farm sub-stations.

Material & Structural Characteristics

• Peroxide-Cured Conductive EPDM Rubber Housing: Formulated and mixed entirely in-house using premium peroxide-cured EPDM polymers to maintain the external screen at absolute earth potential for maximum operator safety.
• Solid Metal Oxide Varistor (MOV) Blocks: Incorporates non-linear zinc oxide varistor disk columns engineered with exceptionally high thermal energy absorption capabilities to prevent drift under transient impulses.
• High-Torque Stainless Steel Clamping Screw Assembly: Secured using a heavy-gauge tin-plated brass clamping screw that establishes low-resistance mechanical contact with the basic insulating plug of the mating part.
• Molded-In Screen Earthing Eyes: Designed with robust, factory-cast earthing eyes molded directly into the external semi-conductive shield jacket for low-impedance ground wire bonding.
• Capacitive Test Point with Protective EPDM Cap: Equipped with an optional built-in capacitive test point under a watertight EPDM conducting rubber cap, enabling safe check of circuit status via a standard fault indicator.

Product Functions

1. Piggyback Overvoltage Defense: Bolts directly onto the rear terminal face of a DTS624 or DTS636 front-inseparable main Tee cable connector, creating a compact piggyback protective layout without widening the enclosure footprint.

2. Deadfront Environmental Shielding: Guarantees a 100% fully screened, fully submersible, and completely dust-tight separable link that isolates high-voltage components from air contamination and moisture ingress.

3. Transient Impulse Attenuation: Operates as an ultra-fast voltage-dependent valve that clamps down severe lightning surges or switching grid transients, shunting destructive energy to earth instantly before resetting to normal open state.

Key Features

1. Absolute Phase Clearance Reduction: The fully screened EPDM geometry eliminates the need for traditional minimum phase-to-phase or phase-to-ground air gaps, enabling tight horizontal, vertical, or angled cabinet layouts.

2. Zero Special Tool Installation: Engineered for quick field refuse and assembly without specialized tensioning or field-heating equipment; the entire companion kit can be energized immediately after secure torque seating.

3. High-Temperature Dielectric Fluid Stability: Formulated from premium non-aging elastomers that resist polymer tracking, chemical degradation, or softening when completely submerged in hot mineral transformer oil or bio-based Envirotemp FR3 fluids.

4. 100% Factory Partial Discharge Verification: Every unit is individual tested at the factory via automated micro-ohm and strict partial discharge screening along with periodic X-ray structural analysis to ensure void-free insulation.