nVent SRF3500N Erico N Series Surge Reduction Filter Owner’s Manual
- June 9, 2024
- nVent
Table of Contents
nVent SRF3500N Erico N Series Surge Reduction Filter
FEATURES
- High-performance protection incorporating Spark Gap and Transient Discriminating (TD) technologies
- High surge rating ideal for exposed critical service entrance applications
- Reduces let-through voltages and rate-of-voltage rise (dv/dt) and helps provide optimum protection for electronic equipment
- Extreme reliability and simplified design with direct connection from input to output
- Comprehensive front panel status and internal diagnostic LEDs
PRODUCT ATTRIBUTES
- Nominal System Voltage (Un): 220/380 – 240/415 VAC
- Distribution System: 3Ph Y 4W+G
- System Compatibility: TN-C;TN-C-S;TN-S;TT
- Rated Load Current (IL): 500 A
- Frequency: 50 – 60 Hz
- Short Circuit Current Rating (SCCR): 43 kA
- Heat Dissipation: 215 W
- Rate of Voltage Rise (dV/dt): 10 V/μs Max
- Filtering: -40 dB @ 100 kHz
- Input Connection: 10 mm Stud
- Output Connection: 10 mm Stud
- Technology: Spark Gap;In-line series low pass sine wave filter;TD technology with thermal disconnect (50 kA 8/20us secondary stage)
- Protection Modes: All modes protected
- Enclosure Material: Metal
- Enclosure Rating: IP 32
- Mounting: Wall mount
- Status Indication: Front panel LED;Internal diagnostic primary and secondary protection LEDs;Change-over contact (Form C dry), 250 VAC/30 VDC/5 A, 4 kV isolation
- Width: 31 1/2″
- Height: 39.370″
- Depth: 11.810″
- Unit Weight: 168.900 lb
- Complies With: IEC® 61643-11 Class I, Class II;ANSI®/IEEE® C62.41.2-2002 Cat A, Cat B, Cat C;ANSI®/IEEE® C62.41.2- 2002 Scenario II, Exposure 3, 100 kA 8/20 μs, 10 kA 10/350 μs
ADDITIONAL PRODUCT DETAILS
- IEC 61643-11 Annex A specifies Max Continuous Operating Voltage (Uc) as 255 VAC.
- IEC 61643-11 test procedure limits maximum Impulse Current (Iimp) to 10kA due to internal product safety fusing.
- IEC 61643-11 recommends a maximum preferred value for Nominal Discharge Current (In) of 20 kA.
- IEC 61643-11 Temporary Overvoltage tests are passed in withstand mode.
- Upstream overcurrent protection not exceeding Rated Load Current (IL) shown above must be installed ahead of the surge reduction filter.
DIAGRAMS
AS1768 Ratings
Part Number| SRF363N| SRF3125N| SRF3250N| SRF3500N|
SRF3800N
Max Continuous Operating Voltage|
310 VAC
Maximum Surge Current, L-N|
130 kA 8/20 μs 50 kA 10/350 μs
Maximum Surge Current, N-PE|
130 kA 8/20 μs 50 kA 10/350 μs
Voltage Protection Level (L-N)
| 200 V @ 3 kA 8/20
μs 250 V @ 20 kA 8/20 μs
| 300 V @ 3 kA 8/20
μs 380 V @ 20 kA 8/20 μs
| 300 V @ 3 kA 8/20
μs 500 V @ 20 kA 8/20 μs
| 320 V @ 3 kA 8/20
μs 550 V @ 20 kA 8/20 μs
| 320 V @ 3 kA 8/20
μs 550 V @ 20 kA 8/20 μs
IEC 61643-11 Ratings
Part Number| SRF363N| SRF3125N| SRF3250N| SRF3500N|
SRF3800N
Max Continuous Operating Voltage (Uc)| 255 VAC
Temporary Overvoltage, L-N| 442 VAC 2 hours
Temporary Overvoltage, N-PE| 1200 VAC 200 ms
Impulse Current (Iimp)| 10kA 10/350 μs
Voltage Protection level (Up), L-N @ Iimp| 450 V| 500 V| 550 V
Nominal Discharge Current (In)| 20kA 8/20 μs
Voltage Protection level (Up), L-N @ In| 450 V| 500 V| 650 V
Voltage Drop| 0.1 % Max
WARNING
nVent products shall be installed and used only as indicated in nVent’s product instruction sheets and training materials. Instruction sheets are available at www.nvent.com and from your nVent customer service representative. Improper installation, misuse, misapplication or other failure to completely follow nVent’s instructions and warnings may cause product malfunction, property damage, serious bodily injury and death and/or void your warranty.
North America
+1.800.753.9221
Option 1 – Customer Care
Option 2 – Technical Support
Europe
Netherlands: +31 800-0200135
France: +33 800 901 793
Europe
Germany: 800 1890272
Other Countries: +31 13 5835404
APAC
Shanghai: + 86 21 2412 1618/19
Sydney: +61 2 9751 8500
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