Motor Purge Control System MPC

for Zone 1 and 2

.7-3711-6.10/.M.0

Features

Automatically functioning Ex px purge system for electric motors
Fail-safe control – SIL 2
Purging/operation status display

Marking

Zone 1, ATEX:
II 2(1)G Ex de [ia Ga px] IIC T4 Gb
Zone1, IECEx:
Ex de [ia Ga px] IIC T4 Gb
Zone 2, ATEX:
II 3G Ex nA nC [ic pz] IIC T4 Gc

Guidelines/Norms

2004/108/EC
94/9/EC

Ambient temperature

-20 °C to +40 °C

Certification

DMT 99 ATEX E 082

IECEx BVS 13.0039

NEPSI GYJ13.1200

CSA 2654548

KCS KTL 13-KB4BO-0634

NCC 14.02972 X

Description

Motor Purge Control System consisting of a Motor Purge Controller – MPC and a Motor Purge Valve – MPV (outlet valve) is a unit allowing a safe operation of electric motors in a hazardous environment.

The explosion protection is ensured by means of a pressurised enclosure with leakage loss compensation. The Motor Purge Control System monitors, controls and regulates the purging gas supply for the Ex p motor.

Any malfunctioning in the system or the purging gas supply will be reported reliably and deactivated by safely isolating the Ex p motor.

Technical data *

Protection class	IP 55 (internal components IP 65)
Structure	inside the protective housing
Dimensions	see data sheet
Material	Enclosure material: sheet steel (stainless steel on request) Varnish: RAL 7035
Pressure	Pressure measuring range: 0 to 25 mbar
Purging time	Purge time: 0 to 99 minutes (settable)
Pipe fittings	Supply of purge gas Inlet: R 1″ internal thread MPC S2 R 1½” internal thread MPC S3 Outlet: R 1″ internal thread Signal lines: 3 x pipe connection 10 mm
Voltage	AC 230 V (AC 115 V) ± 10 %
Power	P = approx. 20 W/AC 230 V
Connection	Connection terminals: 2.5 mm²