KMB SMY 133, Operating Manual

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1 General Description
The SMY 133 is specially designed for monitoring of energy and power quality in advanced power systems and
smart grids. The instrument is designed for installation to the panel. Its graphical display presents advanced
information locally without the necessity to use PC. It is suitable for a wide spectrum of automation tasks in
modern buildings and industrial plants as well as for power generation and transmission systems. For advanced
protection, the configuration of SMY 133 can be locked by a pin.
It is equipped with three voltage inputs and three current inputs. The default option X/5A uses common
X/5A or X/1A current transformers.
Warning ! The X/100mA, X/333 mV options is specially designed to be used only in combination with
provided external through-hole or clamp-on current sensors.
1.1 Version 2.0 improvements
ˆ
advanced calibration and higher precision
ˆ
optional six-quadrant meter - differentiates reactive energy through the direction of active power flow.
ˆ
improved, more precise and continuous measurement of harmonic phasors (amplitude, phase)
ˆ
advanced time synchronization options: NMEA, PPS, PPM, power frequency lock
ˆ
special rugged current inputs X/100 mA
ˆ
new option for current transformers and flex probes with 333 mV output
ˆ
modular firmware - Power Quality, ModBus Master, Ethernet-Serial (only for instruments, which have
booth interfaces) and General Oscillogram modules
ˆ
PQ module : power quality analysis according to EN 50160 ed. 3.
– voltage and current measurement class S according to IEC 61000-4-30 ed. 3
– inter-harmonics (IEC 61000-4-30 ed. 3, 61000-4-7 ed. 2)
– flicker severity indices ( P
inst
, P
st
a P
lt
class F3 as defined in IEC 61000-4-15 ed. 2)
– voltage interruptions, dips and swells
ˆ
RCS module : measurement, analysis and recording of the mains signaling voltage signals
1.2 Characteristic features
Connection and Measurement
ˆ
three measuring voltage inputs (L
1
, L
2
, L
3
) towards input N
ˆ
three inputs current sensors (I
1
, I
2
, I
3
)
ˆ
current input options
– X/5A and X/1A: standard CT with secondary nominal 5 A resp. 1A.
–
1