transientovervoltageperformance testcertificate tech spec.pdf · protectionstandard,bsen/iec62305....
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N-PE: Voltage protection level Up at Uoc of 6 kV 1.2/50 µsand Isc of 3 kA 8/20 µs (per mode) 640 V2
L-PE: Voltage protection level Up at Uoc of 6 kV 1.2/50 µsand Isc of 3 kA 8/20 µs (per mode) 712 V2
Transient overvoltage performance L-N
Transient overvoltage performance L-PE
Transient overvoltage performance N-PE
Transient Overvoltage PerformanceTest Certificate
Surge Protective Device (SPD):
Furse ESP 415 M1
For installation in Havells distribution boards:
Type ‘B’ TPN: PSB41, PSB61, PSB61M, PSB81, PSB121,PSB121M, PSB181, PSB181M
The Havells/Furse solution combines best-in-class mains powerdistribution with transient overvoltage protection ensuringcontrolled and verified SPD installation in line with IET WiringRegulations 17th Edition, BS 7671:2008(+A1:2011), for optimalprotection of installed equipment.
Installed performance test:IEC 61643-11 Class III Combination waveform6 kV (1.2/50 µs voltage) 3 kA (8/20 µs current)
Date:
Transient specification (at SPD terminals)
Voltage protection level Up at Uoc of 6 kV 1.2/50 µsand Isc of 3 kA 8/20 µs (per mode) 600 V1
All testing performed in accordance with IEC 61643-11 Class III test 6 kV (1.2 µs voltage) 3 kA (8/20 µs current) forverifying SPD transient overvoltage protective performance at terminal equipment level.
2 Typical values, subject to manufacturing component tolerances. Essential detail relates to voltage protection levelUp <715 V for effective protection below impulse immunity/susceptibility of equipment.
Transient specification (installed performance - SPD to Type ‘B’ TPN board)
L-N: Voltage protection level Up at Uoc of 6 kV 1.2/50 µsand Isc of 3 kA 8/20 µs (per mode) 708 V2
Target voltage protection level Up:(2 x peak operating voltage, 230 V AC system) 715 V
This document certifies that the Furse ESP 415 M1 SPD hasbeen installed on the Havells Type ‘B’ TPN distribution board inaccordance with best practice principles to IET Wiring Regulations17th Edition, BS 7671:2008(+A1:2011) and tested to achieve thevoltage protection levels (Up) shown above.
1 The maximum transient overvoltage let-through the SPD throughout the test (±5%), phase to neutral, phase to earthand neutral to earth.
Havells UK: Longbow House, 14-20 Chiswell Street, London, EC1Y 4TW Tel: 0843 2275 388Furse: Wilford Road, Nottingham, NG2 1EB Tel: 0115 964 3700
Signed:
Keith HerringtonR&D Manager, Furse ESP
12th July 2012
NOVolt free contact
ESP 415 M1STATUS INDICATION
ELECTRONIC SYSTEMS PROTECTION
Made by W J Furse & Co Ltd, ESP Division, Wilford Road, Nottingham, NG2 1EB, UK
L1
L1 L2 L3 N
L1
L2
L3
N
NWARNING
PATENTAPPLIED
FOR
If lit / flashing disconnectunit & check Neutral to
Earth supply voltage
L2 L3
NC C
GREEN FULL PROTECTION
NO PROTECTION
REDUCED PROTECTION (replace unit)GREEN & RED
RED
Let-through voltage 600V
3 phase/50Hz
(Live to Neutral, Live to Earth & Neutral to Earth)
Vmax 480Vrms
OCPD(SUPPLY)
OCPD (SPD)
Technical InformationSensitive and critical electrical equipment must be protected against transient overvoltages due to atmospheric origin orelectrical switching events in accordance with IET Wiring Regulations 17th Edition, BS 7671:2008(+A1:2011), and LightningProtection standard, BS EN/IEC 62305.
BS 7671 provides guidance through Sections 443 & 534 on the SPD selection and installation requirements for AC power supplies to ensurea satisfactory electrical installation, including:
SPD installation as close as practicable to the origin of the supply, generally at the main distribution board after the meter, tocounter the high level transient overvoltages expected at the service entrance (Clause 534.2.1)
SPD installation as close as practicable to terminal equipment, i.e. at sub-distribution boards for sensitive equipment, or locallyfor critical equipment (Clause 534.2.1)
Connecting leads as short as possible between the SPD, live conductor(s) and the protective conductor, with an ideal total leadlength not more than 0.5 m (but in no case more than 1 m), to minimise risk from additive inductive voltages (Clause 534.2.9)
Installation of multiple coordinated SPDs at appropriate points (main distribution and at subsequent sub-distribution boards) wherethe distance from the SPD to terminal equipment exceeds 10 m, to counter potential voltage oscillations damaging equipment(Clauses 534.2.3.1 & 534.2.3.4.4)
SPD performance suitable to protect the impulse withstand voltage of sensitive electrical equipment (to Tables 44.3 & 44.4 ofBS 7671) and the impulse immunity of critical electrical equipment (impulse immunity calculated at twice the peak operating voltageof the electrical system, i.e. approximately 715 V for 230 V AC systems) (Clause 534.2.3.1.1)
Full Mode SPD capability to protect against transient overvoltages between all conductor combinations (L-N, L-PE, N-PE), forcontinuous operation of electrical equipment (Clause 534.2.2 Note 1)
The combination of Havells Type ‘B’ TPN distribution board with Furse ESP 415 M1 SPD ensures an optimal, controlled and verified solutionto transient overvoltages, removing all installation variables which would reduce SPD performance:
The Furse ESP 415 M1 is fully tested to IEC 61643 Class III equipment level test to achieve let-through voltage at the SPD’s terminalsnot exceeding 600 V, with installed performance proven below the impulse immunity/susceptibility of equipment (see previous page).Note installed performance of SPDs always exceeds the tested performance at an SPD’s terminals due to additive inductive voltagedrop on the SPD’s connecting leads
The SPD is supplied with all connecting leads specifically sized to minimise additive inductive voltage drop, for controlled installationin accordance with BS 7671
The SPD provides enhanced protection (as defined by BS EN 62305) with Full Mode capability and Combined Type 1+2+3performance for high quality, effective transient overvoltage protection
The SPD coordinates with all other Furse SPDs installed onsite
Installation diagrams
Connection of SPD to active conductors andprotective conductor. Installation shall includeovercurrent protective devices (OCPDs) on supplyconductor(s) and SPD live connecting lead(s). Ensuresufficient discrimination between OCPDs.
Diagrammatical illustration of each connection between Furse ESP 415 M1 SPD and Havells Type ‘B’ TPN distribution boardshown above, with image showing completed installation image in bottom right position.
Havells UK: Longbow House, 14-20 Chiswell Street, London, EC1Y 4TW Tel: 0843 2275 388Furse: Wilford Road, Nottingham, NG2 1EB Tel: 0115 964 3700
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