TK4850E DC EV Charging Station Testing Device

1. Summary

TK4850 series is a series of high-efficiency testing instruments specially developed to address the problems of complex wiring, difficult handling, low testing efficiency, and high cost during the on-site testing of existing off-board chargers.

TK4850E is one of the all-in-one portable instruments specially designed for on-site testing of off-board chargers of electric vehicles. The instrument integrates a small DC load, supports load expansion, and supports using new energy vehicles as loads. The instrument is operated through a wireless tablet. A single device can complete the working error and clock time error test of the off-board chargers. It is easy to carry and a single person can easily complete the on-site verification of the off-board chargers.

2. Features

• With a built-in 8 kW DC load, a single device can test the off-board charger.

• Supports load expansion and can be connected to an external high-power resistive load for testing.

• It supports using new energy vehicles as loads to measure accumulated electric energy during the entire actual charging process, and supports the verification of Tesla chargers.

• Wide dynamic range measurement technology avoids measurement risks caused by charger output fluctuations.

• The ms-level electric energy refresh speed reduces the error caused by the asynchronous accumulation of electric energy between chargers and standard instruments, and improves the measurement accuracy of accumulated electric energy.

• Integration: A single device integrates the power measurement module, charging control guidance circuit, 8 kW DC load, etc., and a single device can complete the working error verification of off-board chargers, effectively improving efficiency.

• Fixed power: The system can preset the charging power and automatically control the start and stop of the charger.

• Ripple measurement: It has the function of measuring voltage and current ripple.

• Clock verification function: real-time clock display, which can complete the clock time error test of the charging pile.

• Temperature probe: A wired temperature probe is standard, which can complete on-site temperature measurement.

• Bluetooth temperature and humidity meter (optional accessory): An optional Bluetooth temperature and humidity meter can be connected to a tablet via Bluetooth to complete on-site temperature and humidity measurements and automatically record data.

• Traceable calibration: with dedicated calibration terminals to facilitate instrument calibration.

• Wireless tablet operation allows you to save on-site information by taking photos and complete automatic testing.

• With its own display screen, the working error test can be completed directly on the lower computer display screen.

• High reliability: The load uses high-reliability alloy resistors, which support 8 hours of continuous full-load operation. The equipment will not experience abnormalities such as overheating, and at the same time ensure accurate measurement.

• Safety protection: equipped with overvoltage protection, overcurrent protection, abnormal wind speed protection, and emergency stop switch;

• Portable: With the built-in load, the weight and volume of the equipment are minimized, and it is equipped with special retractable pull rods and rollers, so a single person can easily complete on-site inspections.

• Power supply mode: supports three modes: mains input, gun head power supply and built-in lithium battery power supply.

3. Application

4. Testing Items

• Working error: A single device can complete the working error test of charger.

• Clock verification: It has time synchronization function, real-time clock display, and clock time error test of the charger.

5. Appearance

6. Specification

6.1 DC Voltage/Current

Measurement		Accuracy Class
		Class 0.05	Class 0.1
Voltage	Range	1000 V	1000 V
	Measurement Range	200 V～1000 V	200 V～1000 V
Current	Range	250 A	250 A
	Measurement Range	1 A～250 A	1 A～250 A
Ripple	Voltage and Current Ripple Measurement Uncertainty (k=2)	0.05%*RG, valid value	0.1%*RG, valid value
	Ripple Measurement Bandwidth	≤ 1 kHz	≤ 1 kHz

6.2 Power/Energy Measurement

Voltage Range	Current Range	Measurement Uncertainty (k=2)
		Class 0.05	Class 0.1
200V~1000V	5 A ≤ I ≤ 250 A	0.05%*RD	0.1%*RD
	1 A ≤ I＜5 A	0.1%*RD	0.2%*RD

6.3 Load

Load	Load Power	8 kW
	Load Setting	16A@500V
	Heat Dissipation	Forced air cooling
	Protection	Overvoltage protection, overcurrent protection, abnormal wind speed protection

6.4 Clock

Clock Function	Timing Method	Satellite timing
	Measurement Uncertainty (k=2)	1s/d

6.5 Temperature (Wired Temperature Probe)

Temperature	Measurement Range	-30℃～60℃
	Maximum Allowable Error	0.5℃
Note: A Bluetooth temperature and humidity meter can be optionally equipped, please see the optional accessories list for details.

7. General Specification

Power Supply	Three power supply modes available: electric gun head, built-in lithium battery, and 220V mains power.。
Power Input	AC ( 220 ± 22 ) V, ( 50 ± 2 ) Hz
Communication Method	USB, LAN, WIFI, bluetooth
Temperature Performance	Working temperature: -25°C~55°C; Storage temperature: -30°C~70°C
Humidity Performance	Working humidity: < 80% @ 30°;C, < 70% @ 40°C, < 40% @ 50°C Storage humidity: <80% R H, no condensation
Size and Weight	Size(mm)：330(W)*315(D)*468(H) Weight: Approx 22kg

8. Ordering Information

9. Accessory List

S/N	Name	Specification	Qty	Note
1	TP2000 Handheld Bluetooth Temperature and   Humidity Meter	Temperature   measurement range: -30℃~60℃, maximum allowable error: 0.5℃ Humidity   measurement range: 0%~100%RH, maximum allowable error: 5% Powered by large-capacity   lithium battery. The built-in Bluetooth communication module can wirelessly transmit   temperature and humidity measurement data to the host through Bluetooth   communication, eliminating the need for users to manually enter data.	1	Optional
2	Vehicle   Charging Connector	CCS1-GBT DC American Standard to GB/T, 1000V, 250A	1	Optional
3	Vehicle   Charging Connector	CCS2-GBT DC European Standard to GB/T, 1000V, 200A	1	Optional
4	Vehicle   Charging Connector	ChadeMo-GBT DC Japanese Standard to GB/T, 500V, 125A	1	Optional
Note: The above   accessories need to be purchased separately and specified in the order   contract.

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