High-Performance DC SPD with Uc 275V, In 20kA, Imax 40kA

• Customization: Available
• Type: Power Source Arrester
• Structure: Zinc Oxide Arrester
• Model NO.: TMSPD7
• Installation: Tandem Arrester
• Application: AC/DC System
• Size: Small
• Operation Voltage: Low Voltage
• Shape: Cuboid
• Material: PBT Fireproof
• Certification: ROHS, ISO9001, CE
• Brand: Timelec
• Uc: 275V / 255V
• In: 20kA
• Imax: 40kA
• Up: 1.5kV
• IEC: IEC61643-11
• IP: IP20
• Protection: Class II, T2
• Transport Package: Carton Box
• Specification: 18mm
• Trademark: Timelec, OEM / Private Label brands
• Origin: China
• HS Code: 853620
• Production Capacity: 1000000
• Package Size: 7.80cm * 8.00cm * 5.90cm
• Package Gross Weight: 0.200kg

Product Description

Product Description

The SPD Surge Protective Devices are engineered with precision to shield against transient surge conditions. During large-scale surge events, such as a lightning strike, these surges can skyrocket to hundreds of thousands of volts, leading to instantaneous or sporadic equipment failures. While lightning and utility power irregularities contribute to merely 20% of these transient surges, the remaining 80% originate internally. Although these internal surges might be less severe, their frequent occurrence can gradually impair delicate electronic systems within a facility.


A power surge, essentially a short-lived overvoltage event, poses a threat to electrical devices and is a prevalent culprit behind electrical equipment malfunction. Surges can inflict damage and shorten the lifespan of various devices, including:

• Heating and Air Conditioning Systems
• Washers and Dryers
• Water Heaters
• Ranges & Refrigerators
• Lighting
• Entertainment Systems

NEW 2020 National Electrical Code Requirements
According to the latest 2020 National Electrical Code, all new and renovated homes must be safeguarded with Listed and Approved Type 1 or Type 2 Surge Protective Devices.

Type 1:
Permanently connected Surge Protective Device offers robust protection against both external and internal surges. It can be installed either inside or outside of the home, ensuring comprehensive protection.

Type 2:
This permanently connected Surge Protective Device is installed in or adjacent to the breaker box, providing defense against both internal and external surges.

Type 3:
An additional layer of defense with the point-of-use Surge Protective Device, Type 3 must be used alongside Type 1 or Type 2 SPD to fully comply with the 2020 code requirements.

For the ultimate in surge protection, incorporate Type 1, 2, and 3 SPDs into your electrical protection strategy.

Product Parameters

Max Continuous Operating Voltage				Ucpv	500VDC	600VDC		1000VDC		1500VDC
Nominal Discharge Current				In	20kA	20kA		20kA		20kA
Max Discharge Current				lmax	40kA	40 kA		40kA		40kA
Protection level				Up	2.8kV	3.0kV		3.5kV		5.5 kV
Rated shortcircuit current				IscCI	100A
lcpv					0.2 mA
Connection mode					paralle
Response Time				tA	25ns
Back up fuse					LT-SSD40
Remotecommunication					With
Remote communication connection					1411:NO,1112:NC
Remote contact rated current					220V/0.5A
Associateddisconnectors
Thermal disconnector					internal
Fuses					Fuses type gG100A
ground fault breaker					None
Mechnicalcharacteristics
Connection					By screw terminals:6-35mm
Terminal Screw Torque					2.5 Nm
RecommendedCable cross Section					≥16mm²
Insertwire length					15mm
Mounting					DIN rail 35mm (EN60715)
Degree of Protection					IP20
Housing					PBT
Flame retardant grade					UL94 V0
Operating temperature					-40ºC~+70ºC
Operatingrelative humidity					5%-95%
Working atmospheric pressure					70kPa~106kPa
Connection					By screw terminals:6-35mm

Installation Instructions

Selection of SPD:
When selecting a Surge Protection Device (SPD) for your power distribution system, it's essential to consider specific characteristics that define an effective lightning protection system. The chosen SPD must safeguard your building's electrical installation efficiently.

• SPD
  • quantity of SPD
  • type
  • A crucial factor in determining the appropriate SPD is the level of exposure. This helps define the SPD's maximum discharge current, known as Imax.
• Short circuit protection device
  • maximum discharge current Imax;
  • Consider the short-circuit current, Isc, at the point of installation to ensure compatibility and safety.

Other vital characteristics are predefined for an electrical installation, guiding the selection of an SPD.

• number of poles in SPD;
• voltage protection level Up;
• operating voltage Uc.

This sub-section Design of the electrical installation protection system This section elucidates the criteria for choosing a protection system intricately, aligning it with the installation's characteristics, the specific equipment to be protected, and the surrounding environment for optimal efficiency.


Connection of SPD:
To ensure optimal protection, SPD connections to the loads must be as short as possible. This minimizes the voltage protection level (installed Up) at the terminals of the protected equipment.

The combined length of SPD connections to both the network and the earth terminal block must not exceed 50 cm to ensure effective protection.

SPD in plastic enclosure SPD in metal enclosure

 

RED: Replace
Once the indicator turns RED, it's imperative to replace the product to maintain reliable protection.

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