Okay, I need to create a concise and detailed summary of the RP800 Digital Protection Relay document. Let me start by reading through the provided text carefully to understand all the key points.
First, the main features mentioned are that the RP800 is a self-powered and dual-powered protection relay. It uses three standard current transformers for self-powering and provides current measurements. Also, it can be powered by auxiliary supplies like 24-230Vac/dc or a USB cable from a laptop or power bank. That's important because it offers flexibility in power sources.
Next, the document lists several ANSI code protections: 50 (instantaneous phase overcurrent), 51 (inverse time phase overcurrent), 50G (instantaneous measured neutral overcurrent), 51G (inverse time measured neutral overcurrent), SHB (second harmonic blocking), 49 (thermal overload), 52 (breaker wear monitoring), and PGC (programmable logic control). These are all standard protection functions, which is a big plus for users needing multiple protections in one device.
The internal commissioning battery is mentioned, which is a lithium battery with a 20-year lifespan. This is useful for maintaining settings when the relay is off. The metallic box has high EMC and wide temperature range, ensuring reliability in various environments. Low startup levels are also noted, which is good for power efficiency.
The test menu allows testing the trip circuit before powering up, which is a safety feature. There are four configurable LEDs that can be checked when the relay is turned on, which helps in monitoring status. Self-diagnosis via LEDs and outputs is another point, aiding in troubleshooting.
Self-powered technology is highlighted, which reduces the need for external batteries and lowers operating costs. The compact size makes installation easier, as shown in the figures. The functions diagram includes components like internal 5VDC battery, RTC, trip output, RS485 port, and various settings groups. The connections diagram shows the layout of current inputs, trip coil, and other components, with examples provided.
The relay has a low power consumption, which is efficient. It includes a local micro USB port and a remote RS485 port for communication, supporting Modbus RTU or DNP3.0 protocols. The trip output is for a low power coil (24 Vdc – 135 mJ), and there are three configurable inputs and outputs. The Load Data Profiling feature records up to 168 events with a circular mode and configurable sampling rate from 1 to 60 minutes.
Non-volatile RAM stores up to 1024 events and DFR-20 fault reports, along with 10 oscillographic records in COMTRADE format. The internal RTC maintains date and time without power. Oscillography is downloaded via the communication port, and the SICom program is used for saving in COMTRADE format.
The installation and maintenance of external batteries are eliminated, which is a significant benefit. The dimensions and cutout details are provided, showing the relay's compact design. The connections diagram example includes specific wiring details, which might be important for users setting it up.
I need to make sure the summary covers all these points without getting too technical. Start with the main purpose: meeting reliability, ease of use, and maintenance needs. Then list the key features like self-powered and dual power options, the various protection functions, internal battery, EMC and temperature range, low startup current, test menu, LEDs, and self-diagnosis. Mention the communication ports and their protocols, the trip output specifications, configurable inputs/outputs, Load Data Profiling with event recording, non-volatile memory, RTC, oscillography download, and the benefits of no external batteries. Also, note the compact size and installation details. Avoid any markdown and keep it in English. Make sure it's concise but includes all the important aspects. Check for any technical terms that need to be explained briefly, but since the user wants a summary, maybe just list them without explanation. Ensure that the summary flows logically, starting from the main features, then technical specs, and finally the benefits. Also, include the contact information at the end as per the original text. Let me structure this step by step to cover all points without missing anything.
Mevoco’s RP800 Digital Protection Relay is a high-reliability, user-friendly device designed for medium voltage applications. It offers self-powered and dual-powered (self-power + auxiliary) options, utilizing three standard current transformers for power and current measurement, or auxiliary 24–230Vac/dc supplies, including USB or power bank connectivity. Key features include:
- ANSI code protections: 50 (instantaneous phase overcurrent), 51 (inverse time phase overcurrent), 50G/51G (neutral overcurrent), SHB (second harmonic blocking), 49 (thermal overload), 52 (breaker wear monitoring), and PGC (programmable logic control).
- Internal lithium battery (20-year life) for commissioning and data retention.
- High EMC and temperature resistance in a metallic enclosure.
- Low startup current: 75mA (3-phase) / 160mA (single-phase).
- Test menu for trip circuit verification before activation.
- 4 configurable LEDs for status indication, with memory of previous states when powered on.
- Self-diagnosis via LEDs and outputs (WATCHDOG function).
- Communication ports: Local micro USB and remote RS485 (Modbus RTU/DNP3.0).
- Trip output: Low-power coil (24 Vdc – 135 mJ).
- 3 configurable inputs/outputs.
- Load Data Profiling: 168 circular records, adjustable sampling rate (1–60 min).
- Non-volatile RAM: Stores 1,024 events, 20 DFR fault reports, and 10 oscillographic records in COMTRADE format, with internal RTC for timekeeping.
- Compact design for easy installation, with dimensions and cutout details provided.
The relay eliminates the need for external battery installation, reducing operational costs. It supports efficient troubleshooting and maintenance through its integrated diagnostics and configurable interfaces. Contact [email protected] for more details.
