VARIMETER NA voltage and frequency monitors for grid feed-in systems

DOLD's VARIMETER NA series provides voltage and frequency monitors for grid monitoring when decentralized, in-house power generation systems feed energy into the public grid. DOLD describes them as a safe, standards-compliant solution. Setup takes just two rotary switches, and preprogrammed parameters let the devices go into service quickly according to the applicable standard or guideline.

All four monitors are 70 mm wide and conform to DIN EN 60255-1. The RP 9800 suits generator sets above 30 kVA under the VDEW directive, disconnecting on rising or falling voltage and frequency and on a deviating 10-minute mean, with separate output relays for frequency and voltage. The RP 9810 follows VDE-AR-N 4105:2011-08 and DIN VDE 0126-1-1:2013-08, has a BG ETEM certificate of conformity and a fail-safe 2-channel design.

The RP 9811 and RP 9812 are also 2-channel, check section switches by their response time and offer enabling inputs; the RP 9812 adds isolated grid detection. Let us know which standard your installation follows and we'll help you choose the right model.

• Voltage and frequency monitoring for grid feed-in
• Configured with two rotary switches
• RP 9810 to VDE-AR-N 4105:2011-08
• RP 9800 for generator sets above 30 kVA
• RP 9812 adds isolated grid detection