Furse Total Solution to Earthing & Lightning Protection

249 / 300

TSC-0912 - 09.10.12
NEW NEW
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email: • Web:
ESP WT Series NEW
Technical specification
1 The maximum transient voltage let-through of the protector
throughout the test, per mode.
2 The electrical system, external to the unit, may constrain the
actual current rating achieved in a particular installation.
3 The remote signal contact (removable) adds 10 mm
to height.
72 mm
90 mm
54 mm
90 mm ESP 690/25/WT ESP 690/12.5/WT 45 mm
51 mm
Standard
depth 68 mm
Electrical specification ESP 690/25/WT ESP 690/12.5/WT
Nominal voltage - Phase-Neutral Uo (RMS) 690 V
Maximum voltage - Phase-Neutral Uc (RMS/DC) 750 V/1000 V
Short circuit withstand capability 25 kA/50 Hz
Max. back-up fuse (see installation instructions) 250 A
Leakage current (to earth) < 3.5 mA < 2.5 mA
Volt free contact
- current rating
- nominal voltage (RMS)
Screw terminal
0.5 A
250 V
Transient specification ESP 690/25/WT ESP 690/12.5/WT
Type 1 (BS EN/EN), Class I (IEC)
Nominal discharge current 8/20 µs (per mode) In 40 kA 20 kA
Let-through voltage Up at I n1 < 2.5 kV < 2.5 kV
Impulse discharge current 10/350 µs I imp
(per mode) 2
25 kA 12.5 kA
Let-through voltage Up at I imp1 < 2.0 kV < 2.0 kV
Type 2 (BS EN/EN), Class II (IEC)
Nominal discharge current 8/20 µs (per mode) In 40 kA 20 kA
Let-through voltage Up at I n1 < 2.5 kV < 2.5 kV
Maximum discharge current Imax (per mode)2 80 kA 40 kA
Mechanical specification ESP 690/25/WT ESP 690/12.5/WT
Temperature range -40 to +80 ºC
Connection type Screw terminal
Conductor size (stranded) 25 mm2
Earth connection Screw terminal
Volt free contact Connect via screw terminal with conductor up to 1.5 mm2 (stranded)
Degree of protection (IEC 60529) IP20
Case material Thermoplastic, UL94 V-0
Mounting Indoor, 35 mm top hat DIN rail
Weight - unit 0.5 kg 0.33 kg
- packaged 0.6 kg 0.43 kg
Dimensions to DIN 43880 - HxDxW 3
- per module
- for 3ph TN-C supplies
- for 3ph TN-S supplies
90 mm x 68 mm x 72 mm (4TE)
90 mm x 68 mm x 216 mm (total: 3 x ESP690/25/WT)
90 mm x 68 mm x 288 mm (total: 4 x ESP 690/25/WT)
90 mm x 68 mm x 54 mm (3TE)
90 mm x 68 mm x 162 mm (total: 3 x ESP690/12.5/WT)
90 mm x 68 mm x 216 mm (total: 4 x ESP 690/12.5/WT)