NEW ESP SL LED 4-20 mA Series Application Use these protectors on 4-20 mA loop systems - ideal where installation space is at a premium and large numbers of lines require protection, or for systems with long signal lines. Installation Connect in series with the 4-20 mA current loop either near where it enters or leaves the building or close to the equipment being protected (e.g. within its control panel). Either way, it must be very close to the systems earth Combined Category D, C, B tested protector (to BS EN 61643) star point. suitable for twisted pair 4-20 mA loop systems with innovative LED Install protectors either within an protector status indication. For use at boundaries up to LPZ 0 to B existing cabinet/cubicle or in a protect against flashover (typically the service entrance location) separate enclosure. through to LPZ 3 to protect sensitive electronic equipment (e.g. transmitters, monitors, controllers). Features and benefits Very low let-through voltage (enhanced protection to BS EN 62305) between all lines - Full Mode protection Full mode design capable of handling partial lightning currents as well as allowing continual operation of protected equipment Repeated protection in lightning intense environments Innovative LED indication of protection status provides easy visual checking and quick maintenance Ultra slim 7 mm width ideal for compact protection of large numbers of lines (e.g. process control installations) Two stage removable protection module with simple quick release mechanism allowing partial removal for easy line commissioning and maintenance as well as full removal for protection replacement Very low (1 ) in-line resistance for minimal system interference High (75 mA) maximum running current - can also be used on 10-50 mA systems (e.g. process control) Accessories Screen terminal enables easy connection of cable screen to earth ESP SL30L/4-20/M Strong, flame retardant, polycarbonate housing Module replacement Built-in innovative DIN rail foot with locking feature for simple ESP SL/B positioning and clip-on mounting to top hat DIN rails Base replacement 2 4 mm terminals allow for larger cross section wiring, stranded wires For suitable enclosures for the terminated with ferrules or fitting two wires into a single terminal ESP SL LED 4-20 mA Series, please Convenient earthing through DIN foot and/or earth terminal contact us. Technical note 4-20 mA current loops can serve multiple devices over a long distance. The devices and wiring produce a voltage drop (also known as loop drops) but these do not reduce the 4-20 mA current as long as the power supply voltage is greater than the sum of the voltage drops around the loop at the maximum signalling current of 20 mA. For design considerations, each ESP SL30L/4-20 device installed within the loop introduces a 1.7 V loop drop. Furse, Wilford Road, Nottingham, NG2 1EB Tel: +44 (0)115 964 3700 Email: enquiry furse.com Web: www.furse.comNEW ESP SL LED 4-20 mA Series Technical specification NEW Electrical specification ESP SL30L/4-20 1 Nominal voltage 30 V 2 Maximum working voltage Uc 36.7 V 3 Current rating (signal) 75 mA In-line resistance (per line 10%) 1.0 4 Series voltage drop 1.7 V Transient specification ESP SL30L/4-20 5 Let-through voltage (all conductors) Up C2 test 4 kV 1.2/50 s, 2 kA 8/20 s to 63.0 V BS EN/EN/IEC 61643-21 C1 test 1 kV, 1.2/50 s, 0.5 kA 8/20 s to 51.3 V BS EN/EN/IEC 61643-21 B2 test 4 kV 10/700 s to BS EN/EN/IEC 61643-21 45.4 V 6 5 kV, 10/700 s 46.3 V Maximum surge current D1 test 10/350 s to - per signal wire 1.25 kA BS EN/EN/IEC 61643-21 - per pair 2.5 kA 8/20 s to ITU-T K.45:2003, - per signal wire 10 kA IEEE C62.41.2:2002 - per pair 20 kA Mechanical specification ESP SL30L/4-20 Temperature range -40 to +80 C Connection type Screw terminal 2 Conductor size (stranded) 4 mm 2 Earth connection Via DIN rail or 4 mm earth terminal Case material FR polycarbonate UL94 V-0 Weight - unit 0.08 kg Weight - packaged (per 10) 0.85 kg Dimensions 1 Nominal voltage (DC or AC peak) measured at < 10 A. 2 Maximum working voltage (DC or AC peak) measured at < 1 mA leakage. 3 The minimum current for LED indicator operation is 2 mA. 4 At 20 mA. 5 The maximum transient voltage let-through of the protector throughout the test (10%), line to line & line to earth, both polarities. Response time < 10 ns. 6 Test to IEC 61000-4-5:2006, ITU-T (formerly CCITT) K.20, 104.6 mm K.21 and K.45, Telcordia GR-1089-CORE, Issue 2:2002, ANSI TIA/EIA/IS-968-A:2002 (formerly FCC Part 68). 106.5 mm 2S 1 1SE2 7 mm The ESP SL Slim Line Series is also available for protection of systems up to 110 V as well as 3-wire, RS 485, RTD & telecommunication applications (ESP SL/3W, ESP SL RS485, ESP SL RTD & ESP SL TN). The ESP SL X Series has approvals for use in hazardous areas. Furse, Wilford Road, Nottingham, NG2 1EB Tel: +44 (0)115 964 3700 Email: enquiry furse.com Web: www.furse.com