Ac Power; Power Connections - Martin EC Series LED Video Panel Installation And Safety Manual

AC power

WARNING! The safety of the installation is the responsibility of the installer. Read "Safety
Information" on page 3 before creating an installation or connecting an EC-20 panel to AC mains
power. Disconnect the entire installation from power before carrying out installation work.
WARNING! Connect to 200-240 VAC, 50/60 Hz mains power only.
WARNING! A maximum of sixteen EC-20 panels in total may be interconnected using power input
and throughput connectors to form one chain that draws power via the first panel's input connector.
If you do not respect these limits you will overload cables and components and create a serious
safety hazard. If you reach the maximum permitted number of interconnected panels in one chain
and want to supply more panels with power, you must create a new chain that draws power from a
separate power outlet.
WARNING! For protection from electric shock, the panel must be grounded (earthed). Power
distribution circuits must be fitted with a current overload fuse or circuit breaker with a maximum
rated current of 40A for European region and with a maximum rated current of 32A for North
American region) and ground-fault (earth-fault) protection of high breaking capacity (
WARNING! EC-20 panels do not have a power on/off switch. They are powered on as soon as mains
power is applied to the power input connector and remain powered on until mains power is shut
down at source or disconnected. The external power switch or power outlet socket must be located
near the EC-20 and easily accessible so that power to the EC-20 can easily be shut down or
disconnected if necessary.
WARNING! Two-pole/neutral fusing.
WARNING! The supplied rubber caps must remain installed at all times on any unused power and
data throughput connectors. Keep unused caps safely for re-installation as soon as a video wall is
disassembled.
WARNING! Protect the power cables on the headers from water and rain.
Important! Connect the panels in the installation and the P3 System Controller to AC mains power at
the same outlet point in the power distribution circuit, or you may experience ground/earth loop
problems or create differences in potential that can damage devices. Damage caused by differences
in potential if devices are incorrectly connected to power is not covered by the product warranty.
Voltage range
The EC-20 features an auto-sensing switch-mode power supply that accepts 200-240 V nominal AC mains
power at 50 or 60 Hz. Connect the panel to AC mains power that is within this voltage range only.
The EC-20 can be supplied with AC mains power by connecting to one of the following three-wire systems:
• a single-phase 200-240 V system (live, neutral, ground/earth), or
• two phases of a 3-phase delta or split-phase mid-point neutral system (phase, phase, ground/earth) to
obtain 200-240 V
Power figures are given under "Power through Integral" on page 27. Allow a sensible safety margin when
calculating the current headroom required on AC mains power distribution circuits for an EC-20 installation.

Power connections

Power input
The EC-20 Header is supplied with a 1 m (3 ft. 3 in.) hard-wired power input cable (see A in Figure 2 on
page 8). Protect this cable from rain. If necessary, lengthen with an appropriate cable according to local
building and electrical codes.
Power is relayed from a Header to a panel via the output socket: this is the same socket as the throughput
socket of a Panel.
AC power
≥
1500 A).
17