Class 3200 Meter - E-Mon

CLASS 3200 METER2.0 INTERNAL ELECTRONIC ASSEMBLIESThe units are comprised of two major subassembly boards, the main power board andthe display board. Both circuit boards are mounted inside a UL Type 1 or Type 4Xenclosure.MAINPOWERBOARDDISPLAYBOARDM333072.1 Main Power BoardFig. 1. Internal Electronic Assemblies.Connections to this board include the MAIN Power Input and current sensors.TheMAIN Power Input terminals are positions one through four on the four position screwterminal block, TB1. These terminals are covered with a protective shield for safetypurposes. The current sensor assemblies interface to TB2, TB3 and TB4. Eachterminal block corresponds to an input voltage phase; care must be exercised toensure that each current sensor is connected to the correct terminal block. One threeterminal screw connector is provided for RS-485 communications.TB1POSITIONS1-4RS-485TB2, TB3,TB4Fig. 2. Main Power Board Connections.M3330862-0390-02 6