What products does Hirotronix supply?

Hirotronix supplies industrial automation sensors, machine safety systems, operator controls, level measurement systems, and automation components.

Where is Hirotronix located?

Hirotronix is located in Mississauga, Ontario, Canada.

Does Hirotronix provide worldwide service?

Yes, Hirotronix supplies automation and sensor solutions worldwide.

DOLD RK 9872/802 – Phase monitor

Brand

DOLD

Part number

RK 9872/802

Order number

0070024

Phase monitor

Reliability monitoring of 3-phase voltage systems on:- Undervoltage- Overvoltage
Fast fault location
Preventive maintenance
Space saving
Very fast response time approx. 30 ms

Ask an engineer

Price and lead time on request — add this part to your quote list and we will reply with pricing and availability.

Brand	DOLD
Housing width	17.5 mm
Output contacts	1 C/O contact
Enclosure design	Distribution board
Phases	3
Order number	0070024

The space saving phase monitors RK 9872/802 and RK 9872/803 from the Varimeter family monitors under- and overvoltage as well as phase sequence in 3-phase systems. The response values are fixed. When connecting the measuring voltage to the inputs L1-L2-L3 and fault free system the relay switches on. After detecting undervoltage or overvoltage on one or more phases for longer than 30 ms, the relay drops out. The phase monitor measures the arithmetic mean value of the 3-phase voltages against N.

Features

According to IEC/EN 60255-1
Detection of under-/overvoltage in 3-phase voltage systems
Without separate auxiliary voltage
LED-Indication for operation voltage and contact position
De-energized on trip (output relay not activated in case of error)
With fixed response value for undervoltage
With fixed response value for overvoltage
Width: 17.5 mm

Technical specifications

1- / 3-phase	3
Enclosure design	Distribution board
Measuring range max.	400 V
Output contacts	1 C/O contact
Standard measuring range	3/N AC 400/230 V
Width	17,5 mm
Type	RK 9872/802

Available variants

Contact equipping	1 changeover contact
Nominal voltage	3/N AC 400 / 230 V
Approvals and Markings	UKCA
Variant	Ruhestromprinzip. Überwachung auf Unterspannung 0,8 UN. Überwachung auf Überspannung 1,15 UN. Schnelle Reaktionszeit