Setra Systems L series Specifications download pdf (Page 18)

A Typical 230V Single-Phase Panel

Setup (US Wire Colors)

Connect the Black L1 voltage lead to Voltage L1, Red L2 voltage lead to L2 voltage, White Neutral voltage

lead to neutral. CT1 would monitor L1 loads and CT2 would monitor L2 loads. Based on the above

guidelines, CT3 can be used if the Blue L3 voltage lead is connected to either L1 or L2. As long as voltage

lead L3 and CT3 are in-phase, the Power Patrol meter will provide correct kW readings. If the Blue L3

voltage lead was connected to L2 voltage source, then CT3 could monitor any L2 branch circuit. Or, if the

Blue L3 voltage lead was connected to L1 voltage source, then CT3 could monitor any L1 branch circuit.

A Typical 115V Single-Phase Panel

Setup

Connect the Black L1 voltage lead to Voltage L1 (hot), Red L2 voltage lead to Neutral, and White N

voltage lead to neutral. CT1 would monitor the L1 load. CT3 can be used if the Blue L3 voltage lead is

connected to L1. CT3 could then monitor any L1 branch circuit.

System Values

System values are the sum of L1 + L2 + L3 measurements. System values may not be meaningful since

two different devices or loads can be monitored by a single Power Patrol element.

When paired with the right voltage phase, each CT provides individual kW/kWh readings for that CT

channel.

COM—Communications LED

The Power Patrol COM LEDs signal the following communication information.

POWER PATROL (SERIAL COMMUNICATION ONLY)

BACnet

Modbus

Description

Steady Green

Power is applied to the meter.

Flashing Green

The meter is communicating.

Steady Red

Communications failure, or talking with BACnet while the meter is in

Modbus mode.

Flashing Red

The meter is receiving communication on the bus for a meter at

another address.

Table II-2: Serial COM LED Signals

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 89 90

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Setra Systems L series Specifications Page 18