lightning protectors with high surge currents

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Installation

Install in parallel, within the power distribution board, either on the load side of the incoming isolator, or on the closest outgoing way to the incoming supply. Connect with very short connecting leads, to phase(s), neutral and earth.

On supplies over 100 amps, phase/live connecting leads should be fused with a either a 63 or 100 amp high rupture capacity (HRC) fuses, a switchfuse, MCCB or type 'C' MCB.

Parallel connection to three phase star (4 wire and earth) supplies.

Install within the distribution board, just after the incoming isolator (or on the first outgoing way). Live connecting leads should be fused on supplies exceeding 200A (ESP 415 M2) and 315A (ESP 415 M4).

Parallel connection of ESP 415 M1 or ESP 208 M1 to three phase star (4 wire and earth) supplies.

Suitable accessories

Where the protector can not be incorporated within the panel use the WBX M2 enclosure for the ESP 415 M2 or the WBX M4 for the ESP 415 M4.

ESP M2 M4 Brochure

Electrical specification

	ESP 415 M2	ESP 415 M4
Nominal voltage (RMS)	415V	415V
Working voltage (RMS)	346 - 484V	346 - 484V
Frequency range	40 - 60Hz	40 - 60Hz
Current rating (supply) -direct connection to supply -connect via series fuses to supply	<200A >200A	315A 315A (See installation instructions
Leakage current (to earth)	<500µs	<1,000µs
Indicator circuit current	<20mA	<40mA
Volt free contact -current rating -nominal voltage (RMS)	Screw terminal 1A 250V	Screw terminal 1A 250V

Transient specification

	ESP 415 M2	ESP 415 M4
Let-through voltage (all conductors)¹ 6kV 1.2/50µs open circuit voltage, 3kA 8/20µs short cut current to: BS 6651:1999 Appendix C, Categories C-low and B-High IEE C62.41-1991² Location Categories C1 and B3 SS CP 33:1996 Appendix F AS 1768-1991 Appendix B, Category B UL1449 mains wire-in	590V	570V
4kV 1.2/50µs open circuit voltage, 2kA, 8/20µs short circuit current to: IEC 1000-4-5:1995	560V	540V
2kV 1.2/50µs open circuit voltage, 1kA 8/20µs short circuit current	510V	480V
5kA 8/20µs to NFC 61-740	670V	650V
2.5kA 8/20µs to BS EN 60099-1:1994	580V	560V
6kV 0.5µs 100kHz ring wave, 500A to: IEEE C62.41-199F Location Category B3 AS 1768-1991 Appendix B, Category B	490V	460V
Maximum surge current³ -between any two conductors -total unit to earth	60kA 240kA	120kA 480kA

1 The maximum transient voltage let-through the protector throughout the test (+/-5%), phase to neutral, phase to earth and neutral to earth.
2 Formerly IEEE 587 and ANSI C62.41.
3 Tested with 8/20µs waveshape to BS 6651:1999 Appendix C. Note: The electrical system, external to the unit, may constrain the actual current rating achieved in a particular installation.

Mechanical specification

	ESP 415 M2	ESP 415 M4
Working temperature	-40°C to +70°C	-40°C to +70°C
Connection type	Screw terminal	Screw terminal
Conductor size (stranded)	25mm²	50mm²
Earth connection	Screw terminal	Screw terminal
Volt free contact	Connect via screw terminal with conductor up to 2.5mm² (stranded)
Weight -unit -packaged	2.35kg 2.5kg	3.9kg 4.2kg
Dimensions

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