Monitoring Voltage Relay GRV8-VW
Key attributes
| Brand | Switchgear parts |
| Model NO. | Monitoring Voltage Relay GRV8-VW |
| Rated frequency | 50/60Hz |
| Series | GRV8 |
Product descriptions from the supplier
GRV8-VW isolation monitoring voltage relay is an intelligent protection device designed specifically for industrial automation and power systems. It integrates high-precision measurement, flexible configuration, and reliable protection, effectively ensuring the voltage safety of electrical equipment. Its innovative isolation monitoring technology can meet the voltage signal detection requirements under complex working conditions, and is an ideal solution for overvoltage protection and signal monitoring in power systems.
GRV8-VW Isolation Monitoring Voltage Relay Product Features:
1. Accurate measurement ensures reliability
By using True RMS measurement technology, complex waveform voltage parameters are accurately captured with a measurement accuracy of ± 1% over the full range, ensuring data authenticity even in industrial scenarios with severe harmonic interference.
2. Intelligent monitoring mode is optional
Supports independent monitoring or composite monitoring modes for overvoltage/undervoltage, with programmable threshold parameters. Users can flexibly configure protection strategies based on load characteristics to meet the differentiated voltage protection needs of different systems.
3. Dual contact independent control
Configure two sets of independently operable relay contacts (2CO), each set of contacts supporting normally open (NO)/normally closed (NC) mode switching, which can simultaneously monitor overvoltage and undervoltage states, as well as control different circuits separately.
4. Compact modular design
36mm ultra-thin width combined with 35mm standard card rail installation saves 75% of cabinet space, especially suitable for high-density distribution cabinets and mobile devices with limited space, supporting quick insertion and maintenance.
5. Isolation protection enhances safety
Built in 2000V electrical isolation barrier, effectively blocking strong electromagnetic interference, suitable for weak load capacity systems (such as PLC signal terminals) or voltage monitoring scenarios that require physical isolation, ensuring safe and stable signal acquisition.
| Function | Monitoring voltage |
| Supply terminals | A1,A2 |
| Rated supply voltage | AC/DC24-240V 50/60Hz |
| Monitoring voltage input terminal | V1,V2,V3,C |
| Monitoring voltage range | AC/DC15V-600V50/60Hz |
| Rated insulation voltage | 600V |
| Hysteresis | Only over or under:5%-20% adjustable;Over and under:fixed 3% |
| Supply/Reset indication | Green LED |
| Measurement error | ≤2% |
| Time delay | 0.1s-10s |
| Power up delay/Reset time | 0.1s-10s |
| knob setting accuracy | 10% |
| Output | 2xSPDT |
| Current rating | 5A/AC1 |
| Switching voltage | 250VAC/24VDC |
| Min.breaking capacity DC | 500mW |
| Output indication | Red LED |
| Mechanical life | 5×10⁶ |
| Electrical life(AC1) | 5×10⁴ |
| Operating temperature | -20℃to+55℃(-4°F to 131°F) |
| Storage temperature | -35℃to+75℃(-22°Fto158°F) |
| Mounting/DIN rail | Din rail EN/IEC 60715 |
| Protection degree | IP40 for front panel/IP20 terminals |
| Operating position | any |
| Overvoltage cathegory | III |
| Pollution degree | 2 |
| Max.cable size(mm²) | solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12) |
| Dimensions | 90mm×36mm×70mm |
| Weight | 100g |
| Standards | IEC60947-5-1 |
Related Products
-
GRW8-01 02 Temperature Monitoring Relay
-
Digital Timer Switch TS-GE2 Programmable Periodic Timer
-
Digital Timer Switch THC 822 16A Weekly Programmable
-
Digital Timer Switch THC 109-16A Light Dependent Relay ＆accessories
-
Digital Timer Switch THC 109B-16A Light Dependent Relay ＆accessories
-
Digital Timer Switch THC 15A Programmable Periodic Timer
-
Digital Timer Switch THC 20-1C Weekly Programmable
Related Knowledges
-
On-Line Testing for Surge Arresters Below 110kV: Safe and EfficientAn On-Line Testing Method for Surge Arresters at 110kV and BelowIn power systems, surge arresters are critical components that protect equipment from lightning overvoltage. For installations at 110kV and below—such as 35kV or 10kV substations—an on-line testing method effectively avoids the economic losses associated with power outages. The core of this method lies in using online monitoring technology to evaluate arrester performance without interrupting system operation.The test principle is bOliver Watts10/23/2025 -
Why Upgrade to Maintenance-Free Transformer Breathers?Maintenance-Free Moisture Absorption Technology for Oil-Immersed TransformersIn traditional oil-filled transformers, the temperature control system causes thermal expansion and contraction of insulating oil, requiring the sealing gel chamber to absorb significant moisture from the air above the oil surface. The frequency of manual silica gel replacement during patrols directly impacts equipment safety—delayed replacement can easily lead to oil degradation. Maintenance-free moisture absorbers revFelix Spark10/23/2025 -
What Is an MVDC Transformer? Key Applications & Benefits ExplainedMedium-voltage DC (MVDC) transformers have a wide range of applications in modern industry and power systems. The following are some key application areas for MVDC transformers: Power Systems: MVDC transformers are commonly used in high-voltage direct current (HVDC) transmission systems to convert high-voltage AC into medium-voltage DC, enabling efficient long-distance power transmission. They also contribute to grid stability control and power quality improvement. Industrial Applications: In inEdwiin10/23/2025 -
What Is MVDC Technology? Benefits, Challenges & Future TrendsMedium-voltage direct current (MVDC) technology is a key innovation in power transmission, designed to overcome limitations of traditional AC systems in specific applications. By transmitting electrical energy via DC at voltages typically ranging from 1.5 kV to 50 kV, it combines the long-distance transmission advantages of high-voltage DC with the flexibility of low-voltage DC distribution. Against the backdrop of large-scale renewable integration and new power system development, MVDC is emergEcho10/23/2025 -
Why Does MVDC Grounding Cause System Faults?Analysis and Handling of DC System Grounding Faults in SubstationsWhen a DC system grounding fault occurs, it can be classified as single-point grounding, multi-point grounding, loop grounding, or reduced insulation. Single-point grounding is further divided into positive-pole and negative-pole grounding. Positive-pole grounding may cause misoperation of protection and automatic devices, while negative-pole grounding may lead to failure to operate (e.g., relay protection or tripping devices). OnFelix Spark10/23/2025 -
Why Can't VT Be Shorted & CT Be Opened? ExplainedWe all know that a voltage transformer (VT) must never operate short-circuited, while a current transformer (CT) must never operate open-circuited. Short-circuiting a VT or opening the circuit of a CT will damage the transformer or create hazardous conditions.From a theoretical standpoint, both VTs and CTs are transformers; the difference lies in the parameters they are designed to measure. So why, despite being fundamentally the same type of device, is one prohibited from short-circuit operatioEcho10/22/2025
