KMB SML 133 Operating Manual

The instrument measures line and phase voltages, currents, active, reactive and apparent powers,
power factors, THD and harmonics of voltages and currents, as well as frequency in single-phase and
three-phase low, medium and high voltage power systems.
Built-in electricity meter measures electric energy in four quadrants, as well maximum active power
demand.
The instrument further allows informative measurement of temperatures within a switchboard cabinet
using an inbuilt temperature sensor.
Besides actual values, average values during preset time window are evaluated too. Maximum and
minimum values of them are registered.
The instrument feature three voltage and three fully isolated current measuring inputs.
Nominal range of the voltage inputs can be in range from 57.7/100 up to 400/690 V
The current inputs can be either the „X/5A", i.e. with 5 A
can be adopted for connection to special miniature through-hole („Pxxx"-type) or split core („Sxxx"-
type) ) current transformers. These transformers are part of instrument shipment and they can be
simply installed on measured cables. Therefore, they are convenient in applications where use of
standard xxx/5 A CTs is impossible or not optimal. As assortment of the shipped CTs starts at 5A
nominal current model, they can be installed at secondary circuit of standard xxx/5 A CTs.
The instrument can be optionally equipped with two relays with programmable function or solid-state
outputs that can be used as electricity meter impulse outputs and one digital input for general state
monitoring.
Power supply of standard instrument models has universal range 85 ÷ 275 V
Optional power supply range is 20 ÷ 75 V
The instruments can be equipped with an RS 485 or Ethernet communication interface. Then the
ENVIS software allows remotely viewing data measured. For custom design systems, the Modbus
communication protocol can be used too.
Dr. M. Horákové 559, 460 06 Liberec 7, Czech Republic
tel. +420 485 130 314, fax +420 482 736 896
email : kmb@kmb.cz, internet : www.kmb.cz
SML 133
Multifunctional Meter

Operating Manual

Firmware 1.0 / 2014
nominal range (for standard CTs), or they
AC
DC.
6 / 2014
KMB systems, s.r.o.
,optionally.
AC
or 80 ÷ 350 V
AC DC.