Furse Total Solution to Earthing & Lightning Protection

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TSC-0912 - 09.10.12
NEW NEW NEW
1 Nominal voltage (DC or AC peak) measured at < 10 µA.
2 Maximum working voltage (DC or AC peak) measured at
< 5 mA.
3 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.
4 Test to IEC 61000-4-5:2006, ITU-T (formerly CCITT) K.20,
K.21 and K.45,Telcordia GR-1089-CORE, Issue 2:2002,
ANSI TIA/EIA/IS-968-A:2002 (formerly FCC Part 68).
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email: • Web:
ESP RS485, RS485Q & SL RS485 Series NEW
Technical specification
Electrical specification ESP RS485 ESP SL RS485 ESP RS485Q
Nominal voltage 1 15 V
Maximum working voltage Uc2 16.7 V
Current rating (signal) 300 mA
In-line resistance (per line ±10%) 1 Ω
Bandwidth (-3 dB 50 Ω system) 45 MHz
Transient specification ESP RS485 ESP SL RS485 ESP RS485Q
Let-through voltage (all conductors)3 Up
C2 test 4 kV 1.2/50 µs, 2 kA 8/20 µs to
BS EN/EN/IEC 61643-21
55.0 V
C1 test 1 kV, 1.2/50 µs, 0.5 kA 8/20 µs to
BS EN/EN/IEC 61643-21
42.0 V
B2 test 4 kV 10/700 µs to BS EN/EN/IEC 61643-21 27.2 V
5 kV, 10/700 µs4 28.2 V
Maximum surge current
D1 test 10/350 µs to - per signal wire
BS EN/EN/IEC 61643-21 - per pair
2.5 kA
5 kA
1.25 kA
2.5 kA
2.5 kA
5 kA
8/20 µs to ITU-T K.45:2003, - per signal wire
IEEE C62.41.2:2002 - per pair
10 kA
20 kA
Mechanical specification ESP RS485 ESP SL RS485 ESP RS485Q
Temperature range -40 to +80 ºC
Connection type Screw terminal Screw terminal Pluggable 12 way screw terminal
Conductor size (stranded) 2.5 mm2 4 mm2 2.5 mm 2
Earth connection M6 stud Via DIN rail or 4 mm2 earth terminal Via DIN rail or M5 threaded hole
in base of unit
Case material ABS UL94 V-0 FR polycarbonate UL94 V-0 ABS UL94 V-0
Weight - unit 0.08 kg 0.08 kg 0.1 kg
Weight - packaged (per 10) 0.85 kg 0.85 kg 1.3 kg
Dimensions
7 mm
104.6 mm
106.5 mm
2 S 1 2 SE 1
95 mm
69 mm
42 mm
M3 clearance
Depth: 18 mm
87 mm
120 mm
38 mm
19 mm
54 mm
105 mm
M4 clearance
109 mm
M4 clearance
ESP RS485
ESP RS485Q
ESP SL RS485