79
NOTE
If the RJ45 sockets are used and the inverter is exposed to the weather, please use
products from the VARIOSUB-RJ45 range with IP67 protection class from Phoenix
Contact. This ensures that the installation meets the requirements of IP65.
n
RJ45 plug-in connector, 8-pin (item no. 1658493)
n
Pre-assembled Ethernet cable, 8-pin RJ45/IP67 on RJ45/IP67
(item no. 1658480)
Available from www.phoenixcontact.com.
4.6.7 External protective conductor
The inverter’s stray current to earth can reach values of more than 3.5mA (AC) or 10mA
(DC) during operation. In this case, a second secure protective conductor connection is
required according to EN 50178.
Connecting conditions
n
Minimum conductor cross-section: 4mm² (SM8MT2: 2.5mm²)
n
M6 connections: see 4.6 Electrical connection; page 71
4.7
External earth leakage circuit breaker (ELCB)
The SolarMax MT series inverters have an integrated AC/DC sensitive leakage current
sensor. This sensor is able to distinguish between the operational capacitive stray cur-
rents (caused by capacities of the PV modules to the earth) and leakage currents (caused
by touching a pole of the PV generator). The inverter disconnects immediately from the
grid as soon as an exceedance of the absolute limit value (300mA, important in relation
to fire protection) or a sudden increase in the DC-end leakage current (30mA, important
to protect against personal injury) has been detected.
Summary of Contents for 10MT2
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