TMR-DA-02... Type TMR Current Sensor

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TMR sensor

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Product information： TFY-TMR-Z80-003（铭牌型号：TMR-DA-02...型TMR电流传感器产品规格书A1.1_20260727(2).pdf

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Product Description

Scope of Application

This specification applies to Class B three-phase electric energy meters with direct connection.

Applicable Conditions

Atmospheric pressure: 63 kPa to 106 kPa, at altitudes below 4,000 m.

Climate and environmental conditions: No gases, vapors, chemical deposits, dust, or other corrosive or explosive substances that would adversely affect the insulation of the instrument transformer.

Ambient temperature and humidity are shown in Table 1.

Table 1: Ambient Temperature and Humidity Ranges

Conditions	Scope	Conditions	Scope
The specified operating temperature	-40℃~70℃	Annual average humidity	≤75%
Maximum operating temperature	-40℃~85℃	30 days (these days are naturally distributed throughout the year)	≤95%
Storage temperature	-40℃~85℃	It occasionally appears on other days.	≤85%

Reference Standard

JBT 10665-2016 “Miniature Current Transformers for Electric Energy Meters” JJG313-2010 “Verification Procedure for Measuring Current Transformers”

Q/GDW 11179.15-2023 “Technical Specification for Components Used in Electric Energy Meters – Part 15: Current Transformers” GBT 20840.8-2007 “Instrument Transformers – Part 8: Electronic Current Transformers”

Structural dimensions

Figure 1: Dimensional Drawing

Note: P1 and P2 are the primary current input terminals, and P1 and SCN-2P-1 are like-named terminals.

SCN-2P terminals: 1 (red) connects to the positive terminal of the current-sampling input, and 2 (black) connects to the negative terminal of the current-sampling input.

SCN-3P terminals: 3 (yellow) to VEE, 4 (black) to GND, and 5 (red) to VCC.

Electrical Requirements

Table 2 Electrical Characteristics

Characteristics	Parameter	Project	Parameter
Primary fundamental current	5A	Secondary fundamental current	2 mA
Maximum current at the primary side	80A	Secondary load	10Ω
Accuracy requirements	See Table 3.	Same-name port	See Figure 1.

The ratio error and phase error shall not exceed the values specified in Table 3 below.

Table 3 Limits for Ratio Error and Phase Error (at 23°C)

Accuracy class

Ratio error ±%

Phase error ±’

0.01Ib

0.05Ib

0.2Ib

1.2Ib

Imax

0.01Ib

0.05Ib

0.2Ib

1.2Ib

Imax

0.2S

0.75

0.35

0.2

Note: The difference between the error values at each current test point shall not exceed 0.2S‑class values. When a half‑wave is applied within the range of Ib to 1.2Imax, the variation in ratio error shall be no greater than ±0.2%, and the variation in phase error shall be no greater than 15′.

The absolute value of the current ramp‑up/ramp‑down error shall not exceed the values specified in Table 4 below.

Table 4: Limits for Load Current Rise and Fall Variation

Accuracy class	Ratio error variation ±%	Phase error variation
0.2	0.1	10

Note: The current range is 0.05Ib to Imax.

Other requirements

Serial number	Test conditions	Technical Requirements
1	Short-time overcurrent test Q/GDW 11179.15-2015 - 7.2.4	After testing, the change in ratio error is ≤ ±0.1%, and the change in phase error is ≤ 5’.
2	Temperature Rise Test Q/GDW 11179.15-2015 - 7.2.5	During the test, the enclosure temperature rise shall not exceed 25 K.
3	Power-frequency withstand voltage test Q/GDW 11179.15-2015 - 7.2.7	No destructive discharges were observed during the test.
4	Impulse Voltage Test Q/GDW 11179.15-2015 - 7.2.8	Following the test, no visible damage was observed, and the results comply with the error variation limits specified in Tables 3 and 4.
5	Insulation Resistance Test Q/GDW 11179.15-2015 - 7.2.9	The insulation resistance between the primary winding and the secondary winding shall not be less than 1000 MΩ (DC 500 V).
6	Mechanical Property Testing Q/GDW 11179.15-2015 - 7.3	There are no fractures at the secondary winding terminals.
7	High-temperature test Q/GDW 11179.15-2015 - 7.4.1	Following the test, no visible damage was observed, and the results comply with the error variation limits specified in Tables 3 and 4.
8	Low-temperature test Q/GDW 11179.15-2015 - 7.4.2	Following the test, no visible damage was observed, and the results comply with the error variation limits specified in Tables 3 and 4.
9	High-Temperature, High-Humidity Test Q/GDW 11179.15-2015 - 7.4.3	Following the test, no visible damage was observed, and the results comply with the error variation limits specified in Tables 3 and 4.
10	Temperature Shock Test Q/GDW 11179.15-2015 - 7.4.4	Following the test, no visible damage was observed, and the results comply with the error variation limits specified in Tables 3 and 4.

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