Three-phase voltage and frequency monitoring relay for CHPs (Combined Heat and Power plants), wind power stations, hydroelectric power plants and photovoltaic systems in accordance with DIN V VDE V 0126-1-1

for CHPs, wind, hydroelectric and photovoltaic systems in accordance with DIN V VDE V 0126-1-1 Product description When feeding power into the public grid, voltage and frequency monitoring in accordance with DIN V VDE V 0126-1-1 is required to ensure mains decoupling of private electricity generation systems >30 kW (such as CHPs, wind, hydrodynamic and photovoltaic power plants). The three-phase VMD423 series voltage and frequency relays monitor the voltage and frequency at the point of feed-in. When power is fed into the medium voltage grid, the output voltages and frequencies are measured by...

Three-phase voltage and frequency relay LINETRAXX® VMD423/VMD423H Operating elements 1 - Power On LED "ON" (green); Lights up when voltage is available and when the device is in operation or flashes in case of system fault alarm. 2 - Alarm LED "ALT (yellow): Lights up in case of the following fault messages: >U1/>U2 (10 minute average determination) 3 - Alarm LED "AL2" (yellow): Lights up in case of the following Both the alarm LEDs "AL1" and "AL2" light up in case of the following fault messages: <f/>f/Asy/PHS, the alarm LEDs flash in case of system fault alarm. 4 - Display: Displays operating...

Three-phase voltage and frequency relay LINETRAXX® VMD423/VMD423H Z BENDER 1 - Connection to the system/load to be monitored 2 - Supply voltage US (see ordering information) 5 - Fuse as line protection. 6 A fuse recommended. If being supplied from an IT system, both lines have to be protected by a fuse. 1 - Connection to the system to be monitored and to supply voltage 4 - Fuse as line protection. 6 A fuse recommended. If being supplied from an IT system, both lines have to be protected by a fuse.

Three-phase voltage and frequency relays LINETRAXX® VMD423/VMD423H Technical data none (internally supplied by Un) < 6 VA 5.30 % (30 %)* by setting the asymmetry clockwise R/anticlockwise L (R/on)* ±1.5 %, ±2 digits 1.40 % (5 %)* 45.65 Hz (47.5 Hz)* 45.65 Hz (50.2 Hz)* 0.1 Hz Rated insulation voltage 400 V Rated impulse voltage/pollution degree 4 kV/3 Protective separation (reinforced insulation) between Voltage test according to IEC 61010-1: Supply voltage Supply voltage Us Frequency range Us VMD423-D-2: Supply voltage Us Frequency range Us Power consumption Supply voltage Us Power consumption...

Dimension diagram XM420 (VMD423) Connection Connection type Connection properties rigid flexible without ferrule flexible with ferrule Stripping length Opening force Test opening, diameter push-wire terminals Dimensions in mm Screw mounting Open the front plate cover in Note: The uPPer mounting cNp direction of arrow! must be ordered separately Other Operating mode Mounting Degree of protection, internal components (IEC 60529) Degree of protection, terminals (IEC 60529) Enclosure material Screw mounting DIN rail mounting acc. to Flammability class Documentation number continuous operation any...