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Rayvoss TVSS surge suppressors are unsurpassed in protecting sensitive electronic equipment from damage causing transient surges that are injected on AC power feeds regardless their source. Transient threats generated by lightning activity, utility switching operations, power factor correction, and from other electrical loads are eliminate by the Strikesorb Suppression components utilized by the Rayvoss Surge Suppression system.
Rayvoss and Strikesorb SPDs offer the following desirable attributes:
- Strikesorb and Rayvoss fully comply to the recent UL1449 3rd edition safety standard, effective September, 2009
- Direct Connection (80KB PDF)
- High current handling capability
- Low let-through voltage
- Safe and maintenance free operation
- Technology with thousands of installations worldwide
Fuseless
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Rayvoss TVSS does not require an internal fuse to operate safely. Cables can be attached directly to the internal bus bars eliminating the voltage drop across a fuse. The advantages are lower clamping voltages, elimination of voltage surge when a fuse opens, lower maintenance and no parts to replace. |
UL Listed
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Rayvoss TVSS is UL Listed. All Rayvoss products have the UL Listed mark. Rayvoss TVSS systems fully comply with the recent UL1449 3rd ed. safety standard, effective September, 2009. |
| Large Cable Size |
Rayvoss is UL Listed for installation with 4/0 AWG cable capable of handling 225 A. Using the largest cable size possible helps to reduce the clamping voltage by reducing the inductance in the cable. Other TVSS devices are connected with small gauge wire, hindering the effective clamping voltage. |
In-Line Connection
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All traditional TVSS devices must be installed in parallel. Rayvoss can be installed “in-line.” Parallel-connected TVSS devices have long cable lengths and high clamping voltages. Connecting Rayvoss TVSS in-line eliminates the cable length, resulting in the lowest clamping voltage possible. |
| Bus Bars |
Rayvoss uses 1” x 1/8” nickel-plated copper bus bars for connection. Bus bars reduce the inductance of the connection thereby resulting in lower clamping voltages. In contrast, products using parallel MOVs are assembled on a printed circuit board. In order for the surge energy to reach the MOV, it must travel through a small circuit trace on the board. |
NEMA 4 Enclosure
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The Rayvoss enclosure is NEMA 4 rated, designed to withstand exterior environments and direct water spray. |
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UL Recognized
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Strikesorb is UL-recognized. As a result, it can be integrated into an OEM electrical system, panel or other equipment. Strikesorb fully complies with the recent UL1449 3rd ed. safety standard, effective September, 2009. |
IEC Compliance
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Strikesorb modules have been certified by VDE as Class I SPD products, according to IEC 61643-1:2005. |
| Integration Capability |
The Strikesorb-40 and Strikesorb-80 modules have successfully passed the 3-cycle testing at available short circuit currents of 85kA rms and 65kA rms respectively. This enables Strikesorb to be integrated within panelboards, switchboards, switchgear, motor control centers, etc, without conducting additional UL testing. The unique, fuseless design of the Strikesorb module allows direct installation on the busbars precluding the need to install additional fuses or interconnection wires.
Strikesorb-40 and Strikesorb-80 modules have also been successfully tested according to UL1449 at available fault current of 200kA with an upstream fuse of 4000A. |
In-Line Connection
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All traditional TVSS devices must be installed in parallel. Strikesorb can be installed “in-line.” Parallel-connected TVSS devices have long cable lengths and high clamping voltages. Connecting Strikesorb TVSS in-line eliminates the cable length, resulting in the lowest clamping voltage possible. |
| Won't Burn or Smoke |
Rayvoss & Strikesorb do not self destruct. These are common failure modes of TVSS devices using parallel MOVs. The smoking due to parallel MOVs failing can contaminate the electrical equipment. Strikesorb's design eliminates the use of any material that could burn or smoke. |
| No Thermal Runaway |
Parallel MOVs may begin to conduct electricity in an uncontrolled manner and thus, heat up and go into thermal runaway creating a fire hazard. The aluminum casing and aluminum internal components incorporated into the design of Strikesorb manage the heat generated within the device when a surge occurs. |
| Distribution Grade Varistors |
Most manufacturers of TVSS devices use inexpensive, small diameter MOVs in their products. Strikesorb technology traces its origins to the electrical transmission and distribution industry. Strikesorb incorporates large diameter varistors that can handle much larger surges without affecting its performance. |
Fuseless
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Due to the unsafe failure modes of parallel MOVs, most TVSS manufacturers must incorporate a fuse into their products to meet UL 1449 requirements. Strikesorb's inherently safe design does not require any internal fusing. Not having a fuse eliminates the voltage drop across the fuse; and therefore, the clamping voltage of the TVSS device is lower. Second, when a fuse operates it can cause a voltage surge that can damage electronic equipment. Third, when a fuse clears the equipment is left on line without protection. |
| High Surge Current Capability |
Independent third party evaluations have shown successful testing of the 80mm Strikesorb module to 200,000 A and the 40mm Strikesorb module to 140,000A in accordance with NEMA LS1. |
| Does Not Use Parallel MOVs |
TVSS manufacturers that use parallel MOVs try to match the performance characteristics of each MOV so the surge current is equally distributed among them. Since MOVs cannot be perfectly matched, the lowest clamping MOV will initially start conducting and take a larger amount of energy. After repeated events, this MOV degrades to a point of failure. This cycle repeats itself until the parallel MOV configuration no longer provides adequate protection to the circuit. |
| Environmentally Sealed |
If MOVs are subjected to moisture, their performance characteristics can become compromised. Several MOV manufactures coat their MOVs in resins in an attempt to avoid this problem. However, the resin coating creates a blanketing effect containing trapping the heat inside the MOV, which leads to degradation and eventual failure of the MOV. Strikesorb's design environmentally seals the MOV, effectively acting as a large heat sink to dissipate the thermal energy. |
| Tested Performance |
Rayvoss TVSS performance specifications are actual test results conducted at internationally recognized independent laboratories. |
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