DAE INSTRUMENT SMB350, User Manual, Page: 8 / 32

SMB350 User’s Manual
Page 8
1.4 Specifications
Item Descriptions
Common Voltage

A/B/C/N
Channels

SMB350-4
4 channels of 3p4w or 3p3w or 12 channels of 1p2w

SMB350-8
8 channels of 3p4w or 3p3w or 24 channels of 1p2w
Current Measurement

Depends on dedicated CT type
Voltage Measurement

Max Voltage : 80~350 VAC (L-N), 600 VAC (L-L)

Frequency : 50 or 60 Hz
Display

2 lines by 16 characters LCD for displaying measurement
parameters
Auxiliary Power

AC 120 or 240V, ±10%, 50 or 60 Hz
Settable Parameters

Address, baud rate, CT ratio for each channel from 1~250
(equivalent range 1~1,250A)
Operating Environment

-30~50
o
C (-22~122
o
F)

0~95% non-condensing
Power Consumption

6VA
Mounting

DIN rail
Host Communication

RS485-1 port

Physical Interface: RS485

Protocol: Modbus/RTU

Baud rates: 1200, 2400, 4800, 9600 bps

Modbus address: 1 to 254

Data format: 8/n/1

Default address = last 2 digits of serial number,
baud rate = 9600

Default address and baud rate can be changed on meter or
through Modbus
Touch Panel Interface

RS485-2 port

Baud rates: 1200, 2400, 4800, 9600 bps

Modbus address: 1 to 254

Default: address = 1,
baud rate = 9600 , can be changed on meter
Measured Parameters

Voltage (L-N), Voltage (L-L), Current (A)

kW, kWh, kVAr, kVArh, kVA

Power Factor (PF), Frequency (Hz)
Measurement Category

CAT III
Accuracy (*)

0.5% from 1% to 100% of rated load
Dimensions
(W x H x D)

9.92" x 3.74" x 2.4" (252 x 95 x 61 mm)
Net Weight

SMB350-4
：
680g

SMB350-8
：
710g
* Based on DAE
’s solid-core CT @ PF=1