The following connection details apply to the power supply:

The AC input uses a IEC60320 C20 inlet socket type with a retaining clip to hold the IEC60320 C19

power connector.

A cable is included to connect the PSU to the mains.

The DC output uses an internally mounted male output connector, type Phoenix PCV4/3 with locking nuts.

The external alarm wires are mounted to a 3 pole female screw socket, make Phoenix, type MC

5/3-G-3,81. This connector is plugged into a male connector next to the power connectors.

60 V DC Power supply (1200 W) – UL508 approved

The PSU-UNI6020U power supply is a UL approved switched-mode DC power supply with a high efficiency (>85% at 187 V AC and >80% at 93, 5 V AC). It accepts a wide range of input voltages to provide 60 V DC and 20 A output

Main features

The units main features include:

Dual built-in over-voltage protection, to comply with the functional safety requirements of the DIN V

19250 and VDE V 0801 standards.

ON/OFF switch on the power supply combined with isolated AC and DC power connectors enable on-line replacement of the unit in a live system.

A current limit feature, used to limit the maximum output power to 1200 W.

Under-voltage alarm (<54 V).

An output diode for parallel operation.

Optimum protection against continuous overload and short-circuiting.

100ms holdup time.

Hardware control features

The PSU-UNI6020U power supply has the following hardware control features:

Power switch

An alarm contact.

Each of these features is discussed in more detail below.

Power switch

The power switch is sunk into the frame to prevent accidental operation. It allows you to switch off the PSU-UNI6020U before you disconnect it.

With the power switched off you can safely remove the AC and DC power cables without risk of sparks or spikes on the grid.

Alarm contact

The PSU-UNI6020U has an alarm contact used for voltage monitoring.

The below figure shows the alarm contact with the relay energized, which means that the PSU is powered and the output voltage is above 54Vdc.

Installation

The unit can be mounted both vertically or horizontally.

Convection cooling works best when the unit is mounted vertically, with the power and fan input facing downwards (see the below figure).

The maximum PSU ambient temperature may not exceed 50°C (122°F) when operating at full load.

When mounting vertically the maximum PSU ambient temperature may go up to 70°C (158°F) when operating at half load or less.

Electrical connections

The following connection details apply to the power supply:

The AC input uses a IEC60320 C20 inlet socket type with a retaining clip to hold the IEC60320 C19 power connector.

A cable is included to connect the PSU to the mains.

The DC output uses an internally mounted male output connector, type Phoenix PCV4/3 with locking nuts.

The external alarm wires are mounted to a 3 pole female screw socket, make Phoenix, type MC 1,5/3-G-3,81. This connector is plugged into a male connector next to the power connectors.
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