Page 590 - Wago_Rail-MountedTerminalBlockSystems_Volume1_2015_US.pdf

14 Tests and Testing Procedures per IEC/EN Standards (continued)

588 Electrical Tests (continued)

• Voltage Drop Test to IEC/EN 60947-7-1
The Voltage Drop Test evaluates clamping point quality under stresses such as vibrations, temperature changes and corrosive
influences, in order to verify that the contact point is gas-tight.
®
The CAGE CLAMP and
®
mV CAGE CLAMP S connections enclose
and contain flexible conductors. There-
fore, a variation of the voltage drop with
solid and fine-stranded conductors is so
small that its influence may be negligible
for the practical application of the termi-
nal blocks.

A
1 __ I
10 Test

Test arrangement: “Voltage Drop Test”

Typical voltage drop variations for solid and fine-stranded conductors of 280 to 285 Series CAGE CLAMP
®
rail-mounted terminal blocks:
Voltage drop ∆U
per through contact in mV

3.2

2 fine-stranded

solid
1

35mm²
2.5mm² 4mm² 6mm² 10mm² 16mm² 35mm²

Example: Current load cycling test result for rail-mounted terminal blocks (item no. 285-195) using 95 mm² (AWG 4/0) fine-
stranded copper conductors:
Voltage drop variation over longer peri-
ods under current load cycling conditions

50 is shown for WAGO rail-mounted termi-
nal blocks.
45
40
Voltage drop ∆U per through contact in mV 35 Voltage drop measured at the trough contacts of
rail-mounted terminal blocks numbered 1 – 3
30
25
20
15
10
0
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050

V1 V2 V3 (rail-mounted terminal block numbered 1 – 3)