IN LINE THREE PHASE CURRENT PROVING SWITCH

The YWRI-43 is a direct connected three phase current proving switch adjustable from 250mA-10 Amp. External current transformers cannot be used with the YWRI-43 as the device is for current proving of small three phase loads such as used in the HVAC/BMS sector. Each phase is connected in series through the device. The current is monitored on its own supply, hence a separate auxiliary supply is not required.

On connection of the supply/load the green LED illuminates, when the load exceeds the adjustable setpoint on all three phases the SPCO relay output will energise and the red LED will illuminate. Should the load then fall below the set level on any of the three phases, less a nominal 1% hysteresis the output relay will de-energise and the red LED will be extinguished.

Supply & Measuring:

Measurement ranges: 250mA-10A

Max over current: 15A for 1sec

Hysteresis: Nominal 1% fixed

Repeat accuracy: <±1%

Power consumption: 5VA

Three phase voltage: 415V L-L ±10%

Relay outputs:

Output: Relay SPCO

Rated: 8A/250VAC AC1

Mechanical life: 30 Million ops

Electrical life: 200K at 10A/250VAC

General:

Operating temperature: -20°C to +65°C

Storage temperature: -20°C to +65°C

Max cable size: 4mm

UK CA, CE marked: Yes

In accordance with:
EN61000-6-1: 2007
EN61000-6-3: 2007
EN61010-1: 2002

Housing material: Polycarbonate, Auto extinguishable to UL 94 V-0

TYPE

YWRI-43 / 250mA-10A