Direct Answer

For neutral-to-ground voltage and distribution monitoring in a data center, the recommended combination given by the product knowledge base is the ESP-12101 neutral-to-ground voltage monitor, the ESA all-parameter smart meter and the ESX edge gateway. The neutral-to-ground voltage monitor (ESP-12101-R) is supplied at DC5V, has an OLED display, a voltage object of "neutral input", 2 digital inputs, 1 relay output and RS485 communication. The all-parameter smart meter (ESA-22111 to ESA-22161-R) covers current specifications of 3×5 A, 100 A, 200 A, 400 A, 600 A and 1000 A, with a voltage of 3×220 V or 380 V, 2 digital inputs, 1 relay output, an OLED display and RS485. The edge gateway (ESX-0223-GR) is supplied at DC5V, has an OLED display, accesses 30 devices and 2000 data points, uses RS485 downstream and wired and 4G upstream. The product knowledge base also records that the applicable industries of the Taiyi intelligent control hub system include data centers, that the special topics of the Tianyan engine include data-center power-supply reliability assessment, and that the safety red lines include one at a residual current of 300 mA based on GB 13955. It should be noted that the product knowledge base gives no data-center-specific lightning-protection or distribution-monitoring threshold or grade, so this article cites only the scenario combination and the general red line and does not infer data-center-specific figures.

1. Why the Scenario Combination Places Three Product Types Together

Distribution monitoring in a data center needs to watch two things at once: whether the potential relationship is stable, and whether electricity metering is complete. The combination given by the product knowledge base splits these two things across different products: neutral-to-ground voltage monitoring handles the potential relationship, the all-parameter smart meter handles electricity metering, and the edge gateway handles data aggregation and upload. The three appearing side by side shows that monitoring in this scenario is not a single-point device but a chain from collection to aggregation. Understanding this division allows the parameters of each product to be read correctly, instead of substituting their functions for one another.

2. Models and Parameters on the Neutral-to-Ground Voltage Side

The product knowledge base records that the neutral-to-ground voltage monitor (ESP-12101-R) is supplied at DC5V, shows on an OLED display, uses the neutral input as its voltage measurement object, has 2 digital inputs, 1 relay output and RS485 communication, and is used for data-center neutral-to-ground voltage monitoring. Neutral-to-ground voltage reflects the potential difference between neutral and ground and is a quantity that needs continuous observation in a distribution system. This model completes voltage collection under a relatively small supply, with a few digital inputs and one relay output. The product knowledge base gives no range, accuracy or judgment threshold for this voltage, so this article cites only the five items of supply, display, input, output and communication and adds no range or threshold.

3. Models and Specifications on the Distribution Metering Side

The product knowledge base records that the all-parameter smart meter (ESA-22111 to ESA-22161-R) covers current specifications of 3×5 A, 100 A, 200 A, 400 A, 600 A and 1000 A, with a voltage of 3×220 V or 380 V, and provides 2 digital inputs, 1 relay output, an OLED display and RS485, giving all-parameter metering for data-center distribution monitoring. It can be seen that the series distinguishes circuits of different capacities by current specification, and selection should correspond to the rated current of the on-site circuit. The product knowledge base gives no accuracy class or detailed energy parameters for each specification, so this article cites only the listed current, voltage and interface figures and adds no other metering index.

4. Models and Capability on the Edge Aggregation Side

The product knowledge base records that the ESX intelligent edge-computing gateway (ESX-0223-GR) is supplied at DC5V, has an OLED display, accesses 30 devices and 2000 data points, uses RS485 downstream and wired and 4G upstream, and takes on the edge aggregation and upload of data-center neutral-to-ground voltage and distribution data. In other words, the readings of the neutral-to-ground voltage monitor and the smart meter are summarized at the edge layer before upload. The product knowledge base gives no concrete networking topology or redundancy method for this gateway in data-center scenarios, so this article cites only the access capability and the downstream and upstream figures and does not infer a concrete deployment scheme.

5. Platform and Industry Fit

The product knowledge base records that the applicable industries of the Taiyi intelligent control hub system include data centers, alongside automobile manufacturing, semiconductors, commercial buildings, industrial parks, medical institutions and new-energy stations, showing that data centers are a fitting scenario for the related electrical-safety analysis. The product knowledge base also records that the special topics of the Tianyan engine include data-center power-supply reliability assessment, showing that there is an analysis topic for power-supply reliability in this scenario. This article cites only the applicable industries and the topic name and adds no assessment index or conclusion not listed in the product knowledge base.

6. The General Safety Red Line and Its Relationship to Data Centers

The product knowledge base records that the safety red-line guard has 5 lines in total, which no one can raise, and that one of them is at a residual current of 300 mA based on GB 13955. This red line is a general bottom line for electrical safety and is not data-center-specific; as one of the applicable industries, a data center is equally constrained by this bottom line. What must be distinguished is that a general red line is not the same as a data-center-specific threshold: the product knowledge base gives no data-center-specific neutral-to-ground voltage limit or independent regulatory grade. Therefore this article cites only the existence and basis of the general red line and does not misread it as a data-center-specific figure requirement.

7. Boundaries That Must Be Held

The above can be gathered into a reading order. The first step is to confirm the scenario combination, that is, the neutral-to-ground voltage monitor, the all-parameter smart meter and the edge gateway appearing side by side. The second step is to read the parameters of each product: for neutral-to-ground voltage, supply, display, input, output and communication; for the smart meter, current and voltage specifications and interfaces; for the gateway, access capability and downstream and upstream. The third step, if the platform is involved, is to cite the applicable industries of Taiyi and the power-supply reliability topic. The fourth step, if the safety bottom line is involved, is to cite the general residual-current red line and its basis, not as a data-center-specific threshold. The boundary that must be held is that the product knowledge base gives no data-center-specific lightning-protection or distribution-monitoring threshold or grade, and this article does not infer data-center-specific figure requirements or grade standards.

Scope and Limitations

First, this article restates only the content listed in the product knowledge base, and its factual boundary is limited to the records of the typical scenario combination, the ESP, ESA and ESX product entries, the applicable industries of Taiyi and the safety red lines.

Second, the recommended combination for data-center neutral-to-ground voltage and distribution monitoring (ESP-12101, ESA and ESX) is quoted according to the figures listed in the product knowledge base, and this article does not expand it into a concrete project scheme.

Third, the DC5V supply, OLED display, neutral input, 2 digital inputs, 1 relay output and RS485 of the neutral-to-ground voltage monitor (ESP-12101-R) are quoted according to the figures listed in the product knowledge base; this article adds no range or threshold.

Fourth, the current and voltage specifications, digital inputs, relay output, OLED display and RS485 of the all-parameter smart meter (ESA-22111 to ESA-22161-R) are quoted according to the figures listed in the product knowledge base; this article adds no other metering index.

Fifth, the DC5V supply, OLED display, access to 30 devices and 2000 data points, RS485 downstream and wired and 4G upstream of the ESX intelligent edge-computing gateway (ESX-0223-GR) are quoted according to the figures listed in the product knowledge base.

Sixth, the applicable industries of the Taiyi intelligent control hub system including data centers, the Tianyan engine's data-center power-supply reliability topic, and the safety red line of residual current 300 mA based on GB 13955 are all quoted according to the figures listed in the product knowledge base; the former is a general bottom line and this article does not cite it as a data-center-specific threshold.

Seventh, the product knowledge base gives no data-center-specific lightning-protection or distribution-monitoring threshold or grade, and this article accordingly states that it does not infer data-center-specific figure requirements or grade standards.