AC in, Relay out.

Connect PQ1 inputs to the AC line that feeds your system, and connect its relay contacts to your control computer's digital inputs.
Your software will know every time there is a sag, dip, swell, or impulse on the mains.
Ultra Low Cost.
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PQ1 Highlights & Uses

  1.  Voltage dips
  2.  Voltage swells
  3.  Interruptions
  4.  High frequency impulses / transients, 500 nanosecond response time
  5.  Front panel LED's and switches for simple installation and monitoring
  6.  Three relay contact outputs

Where Can You Use the PQ1?

PQ1 Application
  1. Semiconductor manufacturing equipment
  2. Medical equipment
  3. Elevator controls
  4. CNC machinery
  5. Monitoring power quality at circuit breaker panels
  6. Data centers and telecom
  7. Electric power grid surveys
  8. Building management systems

Technical Data Sheet

  1. PQ1 Power Quality Relay Full Data Sheet 1.20

Simplest possible interface

Simple interface: AC in, relay contacts out
AC power in, normally-closed relay contacts out. DIN-rail mount or chassis-mount. Pre-programmed with standard thresholds: SEMI F47, ITIC, CBEMA, IEC, ZA, MIL-STD, and more!
Automatically adapts to 50 Hz, 60 Hz, and 400 Hz, at any standard world-wide voltage: 100V, 110V, 120V, 200V, 208V, 220V, 230V or 240V (or higher with external step-down transformer). Comes pre-programmed to industry-standard thresholds
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PQ1 Downloads
Application Notes, Manuals, and Technical Information
PQ1 Application Notes   PQ1 Brochure & Specifications  
File Description Format / Size
PQ1 2 page Data Sheet. Release 1.21 PDF
>3,000 KB
PQ1 Presentation.pps PQ1 Slide show presentation PPS
13,052 KB
PSL Intro to Voltage Sags PSL’s short video introduction to voltage sags, showing some common causes and effects. MPG
21,043 KB
Request a price quotation PQ1 Specifications
PQ1 - General specifications
 
Minimum
Typical
Maximum
Notes
Nominal AC Voltage
100 Vrms
---
240 Vrms

Higher voltages possible with external step-down transformer
  1. Standard levels: 100 / 110 / 120 / 200 / 208 / 220 / 230 / 240 Vrms.
  2. May be installed phase-to-neutral or phase-to-phase, provided nominal voltage is in range.
  3. CAT II installation.
  4. 50 / 60 / 400 Hz.
  5. If an external step-down transformer is used, impulse threshold accuracy may be degraded.
Nominal AC current
---
< 10 mA
< 100 mA
  1. Maximum current occurs during rapid voltage increase. Current is non-sinusoidal and non-symetrical.
Relay contact outputs
---
---
300 mA, 30 V AC or DC
  1. Relay outputs are dry contacts.
  2. Contacts open when a problem is detected
  3. Minimum duration that contacts will be open is approximately 3 seconds, regardless of the event duration.
  4. Maximum duration that contacts will br open is the event duration plus the duration threshold.
Relay contact isolation from AC input
1500 Vrms
---
---
  1. Provides "Basic Insulation" per IEC 61010.
  2. Measured between AC input terminals (1 and 2 connected together) and all relay contact terminals (3, 4, 5, 6, 7, and 8 connected together).
Environmental:
Temperature
Max. Rel. Humidity
0°C
---
---
---
50°C
80% @ 31°C
  1. Designed for indore use.
  2. Install fully enclosed in a grounded (earthed) recognized metal enclosure.
  3. Max relative humidity 80% at up to 31°C decreasing linearly to 50% at 40°C.
  4. Transient overvoltage Category II:
    local level, appliances, portable equipment, etc.
  5. Pollution Degree 1:
    No pollution or only dry, non-conductive pollution occurs.
Maintenance
---
---
---
  1. There are no user-serviceable parts in the PQ1.
  2. The fuse is type T100mA 240V, and is factory-replaceable.
  3. There are no cleaning instructions for the PQ1.
Recommended Torque for Screw Terminals
---
0.8 N-m
or
7 in-lb
---
---

PQ1 - Accuracy
 
Minimum
Typical
Maximum
Notes
RMS voltage thresholds
---
±0,5% FS
±1,5% FS
  1. RMS calibrated.
  2. Sensed differentially as digital positive-peak-sense-equivalent, referenced to Terminal 1. Voltage harmonics may affect RMS accuracy, but any effect mimics the effect on an electronic load.
  3. IEC 61000-4-30 Class B.
  4. Accuracy specified at 50/60/400 Hz.
  5. 300 Vrms full scale.
Duration thresholds
---
±0,5 cycle
±1 cycle
  1. Duration thresholds are specified in milliseconds, but uncertainty is specified in cycles, e.g. a 100 millisecond duration threshold at 50 Hz (20 millisecond cycle) is 100 milliseconds ± 20 milliseconds.
  2. Applies to dip and swell thresholds.
Impulse threshold
400 Vpk
450 Vpk
500 Vpk
  1. Nominal impulse threshold is fixed at 450Vpk, regardless of nominal voltage, unlike dip and swell thresholds which are expressed in percent of nominal.
  2. Specified for positive 1.2 x 50 uS impulse, per IEC 61000-4-5.
  3. Useful response from 500x10-9 seconds to 200x10-6 seconds.
  4. Sensed differentially as positive peak, referenced to Terminal 1, through high-pass filter, i.e. the impulsive difference from the fundamental sine wave is sensed.
Frequency threshold
---
±0,05 Hz
±0,1 Hz
  1. Measured by timing successive zero-crossings through an 800 Hz 1-pole low-pass filter.
  2. IEC 61000-4-30 Class B.
  3. Frequency is measured only during start-up, Clear events, and Test events.
  4. 400 Hz = 1~3 ms period; 60 Hz = 15~18 ms period; 50 Hz = 19~22 ms period. Any other period duration causes frequency initialization to repeat.

PQ1 - Immunity
 
Minimum
Typical
Maximum
Notes
RMS voltage immunity:
dips, swells, interruptions
0 Vrms (500 ms),
70 Vrms (continuous)
---
300 Vrms
  1. The same immunity level applies regardless of the setting on the Nominal Voltage switch.
  2. At approximately 350 Vrms for more than 100 milliseconds, a factory-replaceable fuse may open.
  3. Hold-up time: continues to operate properly at 0 Vrms for a minimum of 500 ms (100Vrms) to 3 seconds (240Vrms).
  4. When power is removed for longer than the hold-up time, all relay outputs will show an event.
  5. Memory of events is retained forever, regardless of absence of power.
    Memory can only be cleared by pressing the Clear button.
  6. Exceeds the requirements of IEC 61000-6-2, Table 4, Section 4.4 and 4.5
Fast transient immunity
±2kV, 5/50 ns, 5 kHz rep
---
---
  1. Test standard IEC 61000-4-4.
  2. Exceeds the requirements of IEC 61000-6-2, Table 4, Section 4.2
Surge immunity
±2kV, 1.2/50 us
±4kV, ±500A, 100 kHz ring wave
---
  1. Test standard IEC 61000-4-5.
  2. Exceeds the requirements of IEC 61000-6-2, Table 4, Section 4.3. Line-to-earth surge requirements do not apply.
  3. Excessive surge may cause a factory-replaceable fuse to open.
Radio frequency common mode immunity
10V, 150 kHz ~ 80 MHz, 1kHz AM
---
---
  1. Test standard IEC 61000-4-6.
  2. May cause variations in RMS reading.
  3. Exceeds the requirements of IEC 61000-6-2, Table 4, Section 4.1.
PQube Compliance
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