Satec PM130P Installation And Operation Manual page 9

Automatic return to the main screen is available after 30 seconds
of uninterrupted use.
Setup is menu driven, with optional password protection.
Communications are available using an RS-485 standard, with
ASCII/Modbus or ASCII/DNP3.0 protocols. 120 user assignable
registers are available. Transmitter and receiver status are
displayed on the status information page (see Chapter 6).
One multi-purpose relay (optional) is provided for energy pulsing
(KYZ) or alarm and remote control. Up to 16 setpoints can be
assigned to the relay.
Four time operation counters are provided which are operated
and released by user-defined triggers. These are for counting total
generator time or transformer or power line time overload.
External synchronization of the power demand interval is
provided through communications in the PM130E.
Three user-selectable options are provided:
Power calculation mode (P.cAL):
Mode 1: Reactive power calculation (rEAc)
Mode 2: Non-active power calculation (nAct)
Mode 1 is recommended for electrical networks with low
harmonic distortion (voltage THD < 5%, current THD < 10%);
Mode 2 is recommended for all other cases. (
not measure harmonics; contact your distributor for information on
instruments that provide harmonic measurement).
Energy rollover value (roll – PM130E only)
This option specifies the point at which the energy value rolls
over to zero. For example, if the roll value is 10.E4, then the
energy counter has 4 digits, i.e., energy is displayed up to 9999
kWh (kvarh, kVAh) with resolution 1 kW-hour.
Roll value Maximum Energy
10.E4 9999 kWh (kvarh, kVAh)
10.E5 99999 kWh (kvarh, kVAh)
10.E6 999.99 MWh (kvarh, kVAh)
10.E7 9999.9 MWh (kvarh, kVAh)
10.E8 99999. MWh (Mvarh, MVAh)
2
Active power P and reactive power Q are measured
directly and apparent power S = √ P
Active power is measured directly, and apparent
power S = V × I (V, I - rms voltage and currents)
and non-active power N = √ S
2 2
+ Q
2 2
- P
The PM130 does
Resolution
1 kWh (kvarh, kVAh)
1 kWh (kvarh, kVAh)
10 kWh (kvarh, kVAh)
100 kWh (kvarh, kVAh)
1 MWh (Mvarh, MVAh)
Chapter 1 Introduction