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A Panel Display Meter is a digital instrument mounted on an electrical panel or switchgear door to measure and display one or more electrical parameters — such as voltage, current, frequency, power, or power factor. Unlike analog gauges or simple digital voltmeters, a Panel Display Meter often includes true RMS sampling, programmable alarms, and communication ports (RS485 / Modbus). It serves as the operator’s real‑time window into the health of low‑ or medium‑voltage circuits.
| Fonksiyon | Tipik Veriler / Performans |
|---|---|
| Parameter measurement | Voltage (L‑N / L‑L), current (per phase), frequency, active/reactive power, power factor |
| True RMS sampling | Yes, up to 15th or 31st harmonic |
| Accuracy class | Voltage/current: ±0.5% of reading; Power: ±1.0% |
| Display type | LED (red/green) or LCD with backlight |
| Update rate | 0.5 – 2 seconds (adjustable) |
| Overload withstand | 2× rated voltage continuous; 20× rated current for 1 second |
This table helps engineers and procurement teams quickly match the right panel display meter to their system requirements.
| Parametre | Common Value Range |
|---|---|
| Input voltage range (direct connection) | 0 – 600V AC (L‑N) |
| Input current (via CT secondary) | 1A or 5A AC |
| Auxiliary power supply | AC 85–265V or DC 24V, 48V, 110V, 220V |
| Display digits | 4‑digit or 3‑line multi‑function |
| Communication | RS485 (Modbus RTU), optional Ethernet / Profibus |
| Digital inputs | 2 – 4 programmable (dry contact) |
| Digital outputs | 2 – 3 relay outputs (normally open) |
| Operating temperature | -10°C to +60°C |
| Panel cutout size | 96×96 mm, 72×72 mm, or 48×96 mm (common) |
Where a Panel Display Meter Proves Its Real Value
A good panel display meter is not a one‑size‑fits‑all readout. Below are typical situations where our panel display meter catches hidden drift in voltage, flags imbalanced currents before breakers trip, and gives maintenance crews a clear second‑by‑second view of load changes.
Keeps readings accurate even under strong harmonic distortion. While cheaper meters can misread by 10% or more with VFD loads, this Panel Display Meter stays within ±0.5% error across 3‑phase unbalanced systems.
Lets the meter act as a simple controller, not just a display. You can set over‑voltage or under‑current thresholds directly on the Panel Display Meter and connect its relays to a buzzer or shunt trip – no PLC needed.
Eliminates voltage compatibility headaches in retrofit panels. Electricians often install this Panel Display Meter without swapping the existing control transformer, because it accepts anything from 110V AC to 220V DC.
Makes energy monitoring and data logging straightforward. Instead of buying an extra communication module, every Panel Display Meter comes ready to talk to SCADA or a cloud gateway, saving panel space and cost.
Fits standard cutouts and prevents unauthorised changes. Once the configuration is set, a parameter lock on the Panel Display Meter keeps operators from accidentally resetting CT ratios or alarm setpoints.
Simplifies troubleshooting of intermittent faults. When a mysterious voltage dip occurs only once a week, the Panel Display Meter’s internal memory shows the exact value and time of the event, cutting analysis time dramatically.
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Yes. A single 3‑phase Panel Display Meter typically shows voltage (L‑L and L‑N), current per phase, frequency, power, and power factor, replacing three or four analog meters.
Average‑responding meters are accurate only for pure sine waves. A true RMS Panel Display Meter is essential when your load includes VFDs, rectifiers, or LED lighting – otherwise you may see readings 20‑30% lower than the actual value.
For primary current above 5A or 10A, yes. This Panel Display Meter accepts standard 1A or 5A CT secondary inputs. For low‑current circuits (<5A), direct connection may be possible – check the specification sheet.
Yes. ZHIMING offers auxiliary power versions from 24V DC up to 220V DC, including 48V DC. Just order the correct model code or use the universal AC/DC supply that covers 80‑265V AC/DC.
Enter the programming menu (protected by a password), navigate to “system setup”, and key in your primary CT value (e.g., 600A for 600/5A CT). The Panel Display Meter automatically scales the current reading – no external scaling resistors needed.
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