Bender PEM330 User manual

Power Quality and Energy Measurement
PEM330/PEM333
PEM330-333_D00004_00_D_XXEN/06.2013

2 PEM330-333_D00004_00_D_XXEN/06.2013
PEM333
Power Quality and Energy Measurement
PEM330/PEM333
Product description
The universal measuring device PEM330/333 is used to record and indicate electrical
quantities of a public electricity network. The scope of measurements ranges from currents
and voltages through energy consumption and performance to total harmonic distortion
and voltage quality assessment. The active energy measurements are in compliance with
the DIN EN 62053-22 class 0.5 S accuracy standard.The current inputs are connected via
external …/1 A or …/5 A measuring current transformers.
Typical application
• As a compact device for front panel mounting, the PEM330/333 is a replacement
for analogue indicating instruments
• Typical application in low and medium-voltage networks
(via measuring voltage transformer)
• Power quality monitoring
• Collection of relevant data for energy management systems
• Energy consumption allocation to cost accounting centers
Description of function
• Sampling rate of the measuring channels: 1,6 kHz
• Calculation of the total harmonic distortion THDU/THDI: up to the 15th harmonics
• Password protection
• Easy installation with mounting clips, no tools required
• Inputs and outputs (PEM333 only):
– 2 digital outputs
– 6 user-programmable setpoints (response values, response delay 0…9999 seconds)
– System protocol: 32 events, setup changes, DI/setpoint status changes, DO operations
• Communication (PEM333 only):
– Electrically isolated RS-485 interface (1,200 bit/s to 19,200 bit/s)
– Modbus-RTU protocol
Standards
The universal measuring device for Power Quality and Energy Measurement PEM330/PEM333
was developed in accordance with the following standards: DIN EN 62053-22 (VDE 0418
Part 3-22), DIN EN 61557-12 (VDE 0413-12)
Device features
• Accuracy class according to IEC 62053-22:
0.5 S
• Measured quantities
– Phase voltages UL1, UL2, UL3 in V
– Line voltages UL1L2, UL2L3, UL3L1 in V
– Phase currents I1, I2, I3in A
– Neutral current (calculated) I4in A
– Frequency fin Hz
– Phase angle for Uand Iin °
– Power per phase conductor S in kVA, P
in kW, Q in kvar
– Total power S in kVA, P in kW, Q in kvar
– Displacement factor cos (φ)
– Power factor λ
– Active and reactive energy import in
kWh, kvarh
– Active and reactive energy export in
kWh, kvarh
– Voltage unbalance in %
– Current unbalance in %
– Harmonic distortion (THD) for Uand I
– k-factor for I
• Programmable setpoint monitoring
(PEM333 only)
• LED pulse outputs for active and
reactive energy
• Modbus/RTU communication via RS-485
(PEM333 only)
• 2 digital outputs (PEM333 only)
• Demands of energy and current for
particular time frames
• Peak demands with timestamps
0.5S
PEM330 PEM333
RS-485 –
Digital inputs – 2
Digital outputs – 2
Sampling rate 1.6 kHz 1.6 kHz
THD calculation 15. 15.
Features

PEM330-333_D00004_00_D_XXEN/06.2013 3
Power Quality and Energy Measurement PEM330/PEM333
Operating elements
1 - Pulse LED: kWh
2 - Pulse LED: kvarh
3 - Display
4 - “SYSTEM” button: Selection (in the menu)
5 - “PHASE” button: Up (in the menu)
6 - “ENERGY” button: Down (in the menu)
7 - “SETUP” button: OK (in the menu)
Press the “SETUP” button > 1.5 s to enter/leave the Setup
menu.
kvarh
kWh
PEM333
LINETRAXX®
SYSTEM PHASE ENERGY SETUP
OK
1 2
3
4 5 6 7
Example for system set-up
Modbus TCP
Ethernet
BMS 1…12
Modbus
RTU
Fileserver
L
PEN
PE
L
N
PE
U
I
Modbus TCP
Modbus RTU
PAS
PEM7xx
U
I
NSHV
UV1
1…12
RCMS
UV2
U
I
U
I
U
I
RCMS
Modbus TCP
Modbus RTU
Modbus TCP
PEM5xx PEM5xx
Modbus RTU
PEM3xx
PEM7xx
CP700
3
U
I
Modbus RTU
PEM3xx
3
NSHV = Low-voltage main distribution board

Power Quality and Energy Measurement PEM330/PEM333
4 PEM330-333_D00004_00_D_XXEN/06.2013
Wiring diagram
D+
P1 (RS-485)
D - SH
DO13
• l11 l12 l22 l32L1L2L3N• l21• l31
DO14 DO23 DO24 DI1DI2 DIC A2/ - A1/+
US
L1
L1
I11
I12
I21
I22
I31
I32
L2
L2
L3
L3
N
N
DO13 DO14
DO23 DO24
DI1 DI2 DIC
4 3
2
1
1 - Connection to the system to be monitored:
The measuring leads should be protected with appropriate fuses.
2 - Supply voltage. Line protection by a fast-acting 6-A fuse.
If being supplied from an IT system, both lines have to be
protected by a fuse.
3 - Digital inputs
4 - Digital outputs (N/O contacts)
Three-phase 4-wire system (TN, TT, IT systems)
The PEM can be used in three-phase 4-wire systems, independent
of the type of distribution system (TN, TT, IT system).
Three-phase 3-wire system
The PEM can be used in three-phase 3-wire systems.
The line-to-line voltage must not exceed AC 400 V.
Connection via voltage transformers
The coupling via measuring voltage transformers allows the use
of a measuring device in medium and high voltage systems. The
transformation ratio in PEM330/PEM333 can be adjusted (1…2200).
Connection diagram voltage inputs
L1 L2 L3 N
PEM
Ri
AC 400 V/230 V
L1 L2 L3
PEM
Ri
AC 400 V
N
L1 L2 L3 N
PEM
Ri
LV / MV / H
V

PEM330-333_D00004_00_D_XXEN/06.2013 5
Power Quality and Energy Measurement PEM330/PEM333
Technical data
Insulation co-ordination
Measuring circuit
Rated insulation voltage 300 V
Overvoltage category III
Pollution degree 2
Supply circuit
Rated insulation voltage 300 V
Overvoltage category II
Pollution degree 2
Supply voltage
Rated supply voltage US95…250 V
Frequency range of USDC, 44…440 Hz
Power consumption ≤ 3 VA
Measuring circuit
Measuring voltage inputs
UL1-N,L2-N,L3-N 230 V
UL1-L2,L2-L3,L3-L1 400 V
Measuring range 10… 120 % UN
Rated frequency 45…65 Hz
Internal resistance (L-N) > 500 kΩ
Measuring current inputs
External measuring current transformer
should at least comply with accuracy class 0.5 S
Burden n.A., internal current transformers
Measuring range 0.1… 120% IN
PEM330/333
IN5 A
Measuring current transformer ratio 1…6000
PEM330-251/PEM333-251
IN1 A
Measuring current transformer ratio 1…30000
Accuracies (of measured value/of full scale value)
Phase voltage UL1-N, UL2-N, UL3-N ±0.2 % of measured value
Current ± 0.2 % of measured value + 0.05 % of full scale value
Neutral current I41 % of full scale value
Frequency ± 0.02 Hz
Phase position ± 1 °
Active energy measurement according to DIN EN 62053-22 (VDE 0418 Part 3-22)
r.m.s. voltage measurement according to DIN EN 61557-12 (VDE 0413-12), chapter 4.7.6
r.m.s. phase current measurement according to DIN 61557-12 (VDE 0413-12), chapter 4.7.5
Frequency measurement according to DIN EN 61557-12 (VDE 0413-12), chapter 4.7.4
Interface*
Interface/protocol RS-485/Modbus/RTU
Baud rate 1.2…19.2 kbits/s
Cable length 0…1200 m
Shielded cable (shield connected to terminal SH on one side) recommended: J-Y(St)Y min. 2 x 0.8
Switching elements*
Outputs 2 N/O contacts
Operating principle N/O operation
Rated operational voltage AC 230 V DC 24 V AC 110 V DC 12 V
Rated operational current 5 A 5 A 6 A 5 A
Minimum contact rating 1 mA at AC/DC ≥ 10 V
Inputs 2 electrically separated digital inputs
Imin 2.4 mA
UDI DC 24 V
Environment/EMC
EMC DIN EN 61326-1
Operating temperature -25…+55 °C
Climatic class acc. to DIN EN 60721
Stationary use 3K5
Classification of mechanical conditions acc. to DIN EN 60721
Stationary use 3M4
Connection
Connection screw-type terminals
Other
Degree of protection, installation IP20
Degree of protection, front IP54
Operating manual TGH1476
Weight ≤ 550 g
* PEM333 only

Bender GmbH & Co. KG
P.O.Box1161•35301Gruenberg•Germany
LondorferStraße65•35305Gruenberg•Germany
Tel.:+496401807-0•Fax:+496401807-259
E-mail:[email protected]•www.bender-de.com BENDER Group
Subject to change! – PEM330-333_D00004_00_D_XXEN/06.2013 / Schw / © Bender GmbH & Co. KG, Germany
Dimension diagram
Dimensions in mm
96
80
62
96
91
18 1862
9691
Panel cut out
Dimensions in mm
92
92
Interface Digital inputs/outputs Current input Type Art. No.
– – 5 A PEM330 B 9310 0330
1 A PEM330-251 B 9310 0331
RS-485 2/2 5 A PEM333 B 9310 0333
1 A PEM333-251 B 9310 0334
Ordering information