Kempower_Unit_datasheet.pdf
PDF 6 MB Posted
- Attached to
- Annex EV Chargers
- Solicitation number
- 2026-MPW-162
- Issued by
- Pierce County, Washington
About this file
This is a technical datasheet for the Kempower Power Unit C500, a modular DC fast charging system designed for electric vehicle infrastructure projects. The Kempower unit is the core component specified in Pierce County Public Works' Annex EV Chargers project (ITB 2026-MPW-162) in Tacoma, Washington, where two Level 3 DC fast chargers are required. The Power Unit C500 is available in three cabinet configurations (single, double, and triple) with scalable power output ranging from 50 kW to 600 kW maximum nominal power through combinations of 50 kW power modules. Each unit can simultaneously provide energy to up to 8 DC charging outputs using dynamic or static power management, with the Pierce County project specifying 200 kW Kempower units at 480V three-phase requiring manufacturer-supervised installation and a new 1000 kVA utility service connection. The datasheet provides detailed technical specifications including input voltage of 480 VAC ±6%, output voltage range of 150–920 VDC, operating temperature range of -30°C to +55°C, efficiency of 94% at full load, and compliance with multiple standards including IEC 61851 series, UL 2202, UL 2231-2, and CSA standards. The unit features WiFi/cellular/GPS connectivity, Ethernet, and OCPP 1.6j/2.0.1 protocol compatibility for integration with the Kempower ChargEye management solution.
The Kempower Power Unit C500 specifications indicate mechanical dimensions varying by cabinet type, with the single cabinet (C501) measuring 650 x 2195 x 841 mm and weighing between 280–400 kg depending on module configuration, while the triple cabinet (C503) measures 1850 x 2195 x 841 mm and weighs between 1,080–1,200 kg. The unit incorporates advanced protective features including over/undervoltage protection, surge protection, short circuit protection, overload protection, and earth leakage current monitoring. Environmental specifications include outdoor suitability with an enclosure rating suitable for outdoor use, operational noise below 60 dB at 1 meter distance, and derating requirements for ambient temperatures above 40°C and altitudes exceeding 2,000 meters. The product code interpretation system allows customization through branding options, ranging from unbranded units with black base and roof to branded configurations with custom colors and stickers. Electrical connections utilize DC power cables with terminals of 2 x 300 MCM/2 x 150 mm² per pole, 24 VDC control power cables, and RJ45 communications cables, with the rated current for a single charging output terminal limited to 200 A using power distribution modules.
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Technical Datasheet
Kempower Power Unit C500
The Kempower Power Unit is the heart of Kempower's flexible, modular and scalable DC charging system with dynamic power management.
One Power Unit can simultaneously provide energy for up to 8 DC charging outputs: Satellites or Pantographs. With different combinations of 50 kW power modules, the Power Unit's unique dynamic power management harnesses the full potential of on-demand power routing, saving both energy and costs.
A triple cabinet Power Unit can have up to twelve 50 kW power modules, providing a maximum nominal power of up to 600 kW.
With dynamic power management, the available charging power of all power modules is automatically distributed to all connected charging outputs, depending on the charging cable used and the requirements of the electric vehicles. With static power management, each power module provides pre-set charging power to one dedicated charging output.
Power range Adaptive voltage range
Up to 600 kW 150–920 v
KEMPOWER POWER UNIT C500 EN 1.50 NORTH AMERICA 09-2025 PUBLIC
SUBJECT TO CHANGE WITHOUT NOTICE © KEMPOWER 2025
1. Lifting lugs
2. WiFi/cellular/GPS antenna
3. Air outlet
4. Air inlet
5. Power module (1–4 pcs/cabinet)
6. Power distribution module
7. Control module
8. DC output
9. Main switch
10. AC supply cable entry
Charging power for up to 8 charging outputs, 8 single Satellites or 4 double Satellites
1–4 50 kW Power Modules per cabinet
Scalability with add-on Power Modules
Improved cost efficiency of the charging system
Lockable door for safety and easy access
Advanced charging control and customization with
Kempower ChargEye
Product code interpretation
C501•P160•N•D4•L•C0 Kempower Power Unit C500 single cabinet • 200 kw charging power • no vehicle connector • up to 4 dynamic outputs • ETL certification • unbranded
Item Code Description
Product type C501 Kempower Power Unit C500 single cabinetA
C502 Kempower Power Unit C500 double cabinetA
C503 Kempower Power Unit C500 triple cabinetA
Charging powerB P160 200 kW (4 modules)
P320 400 kW (8 modules)
P480 600 kW (12 modules)
Vehicle connector type N No connector
Power distribution modulesC D4 Up to 4 adaptive dynamic outputs 150–920 VDC
D6 Up to 6 adaptive dynamic outputs 150–920 VDC
D8 Up to 8 non-adaptive dynamic outputs 150–470 VDCD
R Static power distribution
Certification L North American version (ETL-approved product meeting UL and CSA requirements)
Branding C0 Unbranded: roof and base in black color, no stickers
Cn Branded: number (n) indicates branding, e.g. C8 AThe rated current of a single charging output terminal using a power distribution module is limited to 200 A.
BStandard operation. See Power performance for details.
CWith 300 A charging cables:
350 A (rated) in +77 ˚F/+25 ˚C. Requires at least 2 output terminals and a specific hardware configuration.
DPower curve according to Figure 1.
General electrical specifications
Input voltage 480 VAC ±6%
Network type TN-S, TN-C, TN-C-S
Input frequency 50...60 Hz
Overvoltage category III (IEC 60664-1)
Main circuit breaker breaking capacity 65 kA
Power factor at full load 0.92
Output voltage 150...920 VDC
Efficiency at full load 94%
Idle power 20 VA
Standby power C501: 50 W
C502: 100 W
C503: 150 W
Environmental specifications
Operating temperature −22...131 °F/−30...+55 °C
Current deratingA Charging current decreases 1.5% for every 1.8 °F/1 °C rise in temperature above 104 °F/+40 °C
Maximum altitude without derating 6,562 ft./2000 m
Altitude derating Charging current decreases 1.4% for every 328 ft./100 m rise above 6,562 ft./2000 m
Operational noise level < 60 dB at 3.3 ft./1 m distance
Storage temperature Storage and transport temperature range
−40…140 °F/−40…+60 °C
Ambient air humidity < 95% relative humidity
Enclosure rating Suitable for outdoor use AThermal performance applies only to a standard, unbranded Kempower Power Unit.
Connections and protocols
WiFi 2.4/5 GHz (802.11 b/g/n)
Cellular/GPS LTE-FDD, LTE-TDD, WCDMA, GSM
Ethernet RJ45, IEEE 802.3/802.3u
OCPP 1.6j/2.0.1
Connectivity Kempower ChargEye solution
Electrical connections (between Power Unit and vehicle connectors)
DC power cable per vehicle connector (terminals 2 x 300 MCM/2 x 150 mm² per pole)
Control power cable (24 VDC)
Communications cable (RJ45)
Electrical protections
Over/undervoltage
Surge protection
Short circuit
Overload protection
Earth leakage current monitoring
Device overtemperature
Power performance
Product type
Number of Power Modules
Number of independent AC supply cablesA
Charging power
Input current per supply cable at 400 V
Input current per supply cable at 480 V
Charging power
Input current per supply cable at 400 V
Input current per supply cable at 480 V
Standard operation Continuous operation
C501
1 1 50 kW 91 A 76 A 40 kW 73 A 61 A
2 1 100 kW 181 A 151 A 80 kW 145 A 121 A
3 1 150 kW 272 A 227 A 120 kW 218 A 182 A
4 1 200 kW 362 A 302 A 160 kW 290 A 242 A
C502
5 2 250 kW 91 A 76 A 200 kW 73 A 61 A
6 2 300 kW 181 A 151 A 240 kW 145 A 121 A
7 2 350 kW 272 A 227 A 280 kW 218 A 182 A
8 2 400 kW 362 A 302 A 320 kW 290 A 242 A
C503
9 3 450 kW 91 A 76 A 360 kW 73 A 61 A
10 3 500 kW 181 A 151 A 400 kW 145 A 121 A
11 3 550 kW 272 A 227 A 440 kW 218 A 182 A
12 3 600 kW 362 A 302 A 480 kW 290 A 242 A AEach cabinet has a dedicated supply cable.
Figure 1. Power curve – standard operation
150–470 VDC 470–920 VDC
Figure 2. Power curve – continuous operation
150–470 VDC 470–920 VDC
Compliance to standards
IEC 61851-1, IEC 61851-21-2, IEC 61851-23
UL 2202, UL 2231-2
CSA Std. c22.2 No. 281.2, CSA Std. c22.2 No. 107.1
FCC 47 CFR Part 15 Subpart B, Class A
Options
Customized branding Branding options, such as custom colors and stickers Contact Kempower for availability, pricing, and minimum order quantity
Steel base Installation kit for a single cabinet, for flat surface assembly
Mechanical dimensions
Size (W x H x D)
C501: 25.6 x 86.4 x 33.1 in./650 x 2195 x 841 mm
C502: 49.2 x 86.4 x 33.1 in./1250 x 2195 x 841 mm
C503: 72.8 x 86.4 x 33.1 in./1850 x 2195 x 841 mm
Product code Weight
C501P40… 617 lb./280 kg
C501P80… 705 lb./320 kg
C501P120… 794 lb./360 kg
C501P160… 882 lb./400 kg
C502P200… 1,499 lb./680 kg
C502P240… 1,587 lb./720 kg
C502P280… 1,676 lb./760 kg
C502P320… 1,764 lb./800 kg
C503P360… 2,381 lb./1080 kg
C503P400… 2,469 lb./1120 kg
C503P440… 2,557 lb./1160 kg
C503P480… 2,646 lb./1200 kg
Measurements 1 86.4 in./2195 mm 4 33.1 in./841 mm 7 72.8 in./1850 mm 2 25.4 in./645 mm 5 32.5 in./825 mm 3 25.6 in./650 mm 6 49.2 in./1250 mm
Kempower Inc.
2530 S Tricenter Blvd, Durham, NC 27713 USA
KEMPOWER AND CHARGEYE ARE TRADEMARKS OF KEMPOWER OYJ, REGISTERED IN THE U.S. AND OTHER COUNTRIES AND REGIONS
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