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ESP WT Series - Technical specification
Electrical specification
ESP 690/25/WT
ESP 690/12.5/WT
ABB order code
7TCA085460R0028
7TCA085460R0027
Nominal voltage - Phase-Neutral
U
o (RMS)
690 V
Maximum voltage - Phase-Neutral
U
c (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:
Screw terminal
– current rating
0.5 A
– nominal voltage (RMS)
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)
I
n
40 kA
20 kA
Let-through voltage
U
p at In
(1)
< 2.5 kV
Impulse discharge current 10/350 μs
I
imp (per mode)
(2)
25 kA
12.5 kA
Let-through voltage
U
p at
I
imp
(1)
< 2.0 kV
Type 2 (BS EN/EN), Class II (IEC)
Nominal discharge current 8/20 μs (per mode)
I
n
40 kA
20 kA
Let-through voltage Up at
I
n
(1)
< 2.5 kV
Maximum discharge current
I
max (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 mm
2
Earth connection
Screw terminal
Volt free contact
Connect via screw terminal with conductor up to 1.5 mm
2
(stranded)
Degree of protection (IEC 60529)
IP20
Case Material
FR Polymer UL-94 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
– Per module
90 mm x 68 mm x 72 mm (4TE)
90 mm x 68 mm x 216 mm (total: 3 x ESP 690/25/WT)
- HxDxW:
(3)
– for 3ph TN-C supplies
90 mm x 68 mm x 216 mm (total: 3 x ESP 690/25/WT) 90 mm x 68 mm x 162 mm (total: 3 x ESP 690/12.5/WT)
– for 3ph TN-S supplies
90 mm x 68 mm x 288 mm (total: 4 x ESP 690/25/WT) 90 mm x 68 mm x 216 mm (total: 4 x ESP 690/12.5/WT)
(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
Specific systems protection
ESP WT Series