Power Monitoring Products PQ3K & PQ5K

General Purpose Power Quality & Energy Monitoring

The PQ3K and PQ5K are cost effective meters that combine general purpose PQ detection (with waveform recording) and full 4 quadrant energy monitoring in one instrument. Wide-ranging applications include utility, facility, manufacturing, petrochemical, mission critical and more.

The PQ3K is housed in a 144mm x 144mm panel mounted enclosure that includes a high-resolution color TFT display.

The PQ5K is housed in a DIN mounted enclosure with an optional high resolution TFT color display.

Both are compliant with IEC 61000-4-30 Edition 3 Class A with a certification from an independent laboratory for trustworthy PQ measurements. These instruments detect and can record waveforms for sags/dips, swells, interruptions, as well as recording flicker, harmonics, RVC and more, all in parallel with complete energy metering capabilities. Digital I/O provides the ability to read alarms along with internal logic control to generate state/condition-based alarms. IEC 61850, Modbus and Profinet are available for remote communications with 3rd party SCADA and other monitoring systems.

Specifications:

PQ3KPQ5K

Inputs

Voltage
Channels: (4) AC
Nominal Voltage: 57.7 … 400 VLN, 100 … 693 VLL
Overload capacity: 480 VLN, 832 VLL (permanent)
Nominal frequency: 42 … 50 … 58 Hz, 50.5 … 60 … 69.5 Hz

Current
Channels: (4) AC
Nominal Current: 1 … 5 A (max. 7.5 A)
Overload capacity: 10 A (permanent), 100 A, 5×1 s, interval 300 s

Sampling rate: 18 kHz

 
Types of Connections
Single phase
Split phase
3 or 4-wire balanced load
3-wire balanced load [2U, 1I]
3-wire unbalanced load, Aron connection
3 or 4-wire unbalanced load
4-wire unbalanced load, Open-Y

I/O-Interfaces
DIGITAL INPUTS PASSIVE (standard)
Nominal voltage: 12/24 V DC (30 V max.)
DIGITAL INPUTS ACTIVE (optional)
Open circuit voltage: ≤ 15 V
RELAYS (optional)
Contacts: Changeover contact
Load capacity: 250 V AC, 2 A, 500 VA; 30 V DC, 2 A, 60 W
DIGITAL OUTPUTS 2 (standard)
Nominal voltage: 12/24 V DC (30 V max.)

ANALOG OUTPUTS (optional)
Linearization: Linear, kinked
Range: ± 20 mA (24 mA max.), bipolar
Accuracy: ± 0.2 % von 20 mA
Burden: ≤ 500 Ω (max. 10 V/20 mA)

FAULT CURRENT MONITORING For grounded systems (optional)
Number of meas. channels: 2 (2 measurement ranges each)
Measurement range :1 (1A) Earth current measurement
• Measuring transformer: 1/1 up to 1/1000 A
• Alarm limit: 30 mA up to 1000 A
Measurement range: 2 (2mA) RCM with connection monitoring
• Measuring transformer: Residual current transformer 500/1 up
to 1000/1 A
• Alarm limit: 30 mA up to 1 A

TEMPERATURE INPUTS (optional)
Number of channels: 2
Measurement sensor: Pt100 / PTC; 2-wire

 
Inputs

Voltage
Channels: (4) AC
Nominal Voltage: 57.7 … 400 VLN, 100 … 693 VLL
Overload capacity: 520 VLN, 900 VLL (permanent)
Nominal frequency: 42 … 50 … 58 Hz, 50.5 … 60 … 69.5 Hz

Current
Channels: (4) AC
Nominal Current: 1 … 5 A (max. 7.5 A)
Overload capacity: 10 A (permanent), 100 A, 5×1 s, interval 300 s

Sampling rate: 18 kHz

 
Types of Connections
Single phase
Split phase
3 or 4-wire balanced load
3-wire balanced load [2U, 1I]
3-wire unbalanced load, Aron connection
3 or 4-wire unbalanced load
4-wire unbalanced load, Open-Y

I/O-Interfaces
DIGITAL INPUTS PASSIVE (standard)
Nominal voltage: 12/24 V DC (30 V max.)
DIGITAL INPUTS ACTIVE (optional)
Open circuit voltage: ≤ 15 V
DIGITAL OUTPUTS 2 (standard)
Nominal voltage: 12/24 V DC (30 V max.)
RELAYS (optional)
Contacts: Changeover contact
Load capacity: 250 V AC, 2 A, 500 VA; 30 V DC, 2 A, 60 W

ANALOG OUTPUTS (optional)
Linearization: Linear, kinked
Range: ± 20 mA (24 mA max.), bipolar
Accuracy: ± 0.2 % von 20 mA
Burden: ≤ 500 Ω (max. 10 V/20 mA)

FAULT CURRENT MONITORING For grounded systems (optional)
Number of meas. channels: 2 (2 measurement ranges each)
Measurement range: 1 (1A) Earth current measurement
• Measuring transformer: 1/1 up to 1/1000 A
• Alarm limit: 30 mA up to 1000 A
Measurement range: 2 (2mA) RCM with connection monitoring
• Measuring transformer Residual current transformer 500/1 up
to 1000/1 A
• Alarm limit: 30 mA up to 1 A

TEMPERATURE INPUTS (optional)
Number of channels: 2
Measurement sensor: Pt100 / PTC; 2-wire



Instrument Power
Standard nominal voltage: 110…230 V AC, 130…230 V DC
Optional nominal voltage: 24 … 48 V DC
Optional nominal voltage: 110 … 200 V AC, 110 … 200 V DC
Consumption: ≤ 30 VA, ≤ 13 W

 
Basic Uncertainty According IEC/EN 60688
Voltage, current: ±0.1 %
Power: ±0.2 %
Power: factor ±0.1°
Frequency: ±0.01 Hz
Imbalance: U, I ±0.5 %
Harmonic: ±0.5 %
THD: V, I: ±0.5 %
Active energy: Class 0.5S (IEC/EN 62 053-22)
Reactive energy: Class 0.5S (IEC/EN 62 053-24)







Instrument Power
Standard nominal voltage: 100…230 V AC, 130…230 V DC
Optional nominal voltage: 24 … 48 V DC

Optional nominal voltage: 110 … 200 V AC, 110 … 200 V DC
Consumption: ≤ 27 VA, ≤ 12

Basic Uncertainty According IEC/EN 60688
Voltage, current: ±0.1 %
Power: ±0.2 %
Power factor: ±0.1°
Frequency: ±0.01 Hz
Imbalance: U, I ±0.5 %
Harmonic: ±0.5 %
THD: V, I ±0.5 %
Active energy: Class 0.5S (IEC/EN 62 053-22)
Reactive energy: Class 0.5S (IEC/EN 62 053-24)





Interfaces

ETHERNET (standard)
100Base TX; RJ45 socket
Mode: 10/100 MBit/s, full/half duplex, auto-negotiation
Protocols: Modbus/TCP, http, NTP (time synchronization)

IEC61850 (optional)
Ethernet 100BaseTX, RJ45 sockets, 2 ports
Mode: 10/100 Mbit/s, full/half duplex, auto-negotiation. Protocol: IEC61850, NTP

PROFINET IO (optional)
Conformance class: CC-B
100BaseTX, RJ45-Buchsen, 2 ports
Mode: 10/100 Mbit/s, full/half duplex, auto-negotiation
Protocol: PROFINET, LLDP, SNMP

MODBUS/RTU (optional)
RS-485, max. 1200 m (4000 ft)
Baud rate: 9.6 to 115.2 kBaud

TIME REFERENCE Internal clock
Clock accuracy: ± 2 minutes/month (15 to 30°C)
Synchronization via NTP server or GPS

Environmental Conditions, General Information

Operating temperature without UPS: –10 to +55 °C

Operating temperature with UPS: 0 to +35 °C
Storage temperature: –25 to +70 °C
Temperature influence: 0.5 x basic uncertainty per 10 K
Long-term drift: 0.5 x basic uncertainty per year
Others Application group II (IEC/EN 60 688)
Relative air humidity <95 % without condensation
Operating altitude: ≤2000 m above NN
Only to be used in buildings!
Mechanical Properties
Housing material: Polycarbonate (Makrolon)
Flammability: class V-0 according UL94, self-extinguishing, not dripping, free of halogen
Weight: 800 g

Safety
Current inputs are galvanically isolated from each other.
Protection class II (protective insulation, voltage inputs via protective impedance)
Pollution degree 2
Protection IP54 (front), IP30 (housing), IP20 (terminals)
Measurement category U: 600 V CAT III, I: 300 V CAT III
Interfaces

ETHERNET (standard)
100Base TX; RJ45 socket
Mode: 10/100 MBit/s, full/half duplex, auto-negotiation
Protocols: Modbus/TCP, http, NTP (time synchronization)

IEC61850 (optional)
Ethernet 100BaseTX, RJ45 sockets, 2 ports
Mode: 10/100 Mbit/s, full/half duplex, auto-negotiation. Protocol: IEC61850, NTP

PROFINET IO (optional)
Conformance: class CC-B
100BaseTX, RJ45-Buchsen, 2 ports
Mode: 10/100 Mbit/s, full/half duplex, auto-negotiation
Protocol: PROFINET, LLDP, SNMP

MODBUS/RTU (optional)
RS-485, max. 1200 m (4000 ft)
Baud rate: 9.6 to 115.2 kBaud

TIME REFERENCE Internal clock
Clock accuracy: ± 2 minutes/month (15 to 30°C)
Synchronization via NTP server or GPS

Environmental Conditions, General Information

Operating temperature without UPS: –10 to +55 °C

Operating temperature with UPS: 0 to +35 °C
Storage temperature: –25 to +70 °C
Temperature influence: 0.5 x basic uncertainty per 10 K
Long-term drift: 0.5 x basic uncertainty per year
Others: Application group II (IEC/EN 60 688)
Relative air humidity: <95 % without condensation
Operating altitude: ≤2000 m above NN
Only to be used in buildings!
Mechanical Properties
Housing material: Polycarbonate (Makrolon)
Flammability: class V-0 according UL94, self-extinguishing, not dripping, free of halogen
Weight: 800 g

Safety
Current inputs are galvanically isolated from each other.
Protection class II (protective insulation, voltage inputs via protective impedance)
Pollution degree 2
Protection IP54 (front), IP30 (housing), IP20 (terminals)
Measurement category U: 600 V CAT III, I: 300 V CAT III

Published by PQTBlog

Electrical Engineer

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