Yaskawa R1000 Series Power Regenerative Unit - Manual (Page 207)

D.3 UL Standards
YASKAWA ELECTRIC TOEP C710656 08B YASKAWA Power Regenerative Unit - R1000 Instruction Manual 207
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D.3 UL Standards
◆ UL Standards
The RU mark applies to products in the United States and Canada and it means that UL has performed product testing and
evaluation and determined that their stringent standards for product safety have been met. For a product to receive UL
certification, all components inside that product must also receive UL certification.
Figure D.3
Figure D.3 RU Mark
◆ UL Standards Compliance
This regenerative unit is tested in accordance with UL standard UL508C and complies with UL requirements. To ensure
continued compliance when using this regenerative unit in combination with other equipment, meet the following
conditions:
■ Conditions of Acceptability
1. The Current Suppression Reactor shall be installed on the input of R1000 Series device.
2. The R1000 (open type) device and its peripherals shall be installed in a suitable enclosure in the end use.
3. The R1000 Series of Power Regenerative devices shall be connected to a VFD which incorporates Solid State Short
Circuit Protection Circuitry and was found to comply with the High Fault Current Short Circuit Test without additional
testing when:
a) The R1000 series uses solid state short circuit protection circuitry for compliance with the Short Circuit Test, Section
45 of UL508C, 3rd edition; and
b) The solid state short circuit protection circuitry is used in accordance with 45.1.3 of UL508C, 3rd edition.
4. Optional Power Coordinating Reactor may be specified in the end use application. An equivalent, UL Listed or
Recognized, Power Coordinating Reactor can be substituted in place of Yaskawa’s Power Coordinating Reactor
provided the minimum impedance is 3%, calculated as follows:
L = [0.03
× E (Drive Input Rated Voltage)] / [ × 2 × π × f (Input Rated Frequency) × I (System Rated Current)]
5. AC Input Fuse shall be connected to the input side of the Current Suppression Reactor.
■ Installation Area
Do not install the regenerative unit to an area greater than pollution degree 2 (UL standard).
■ Ambient Temperature
IP00/Open Type enclosure: -10 °C to +50°C (14°F to 122°F)
IP20/NEMA Type 1 enclosure: -10 °C to +40°C (14°F to 104°F)
■ Main Circuit Terminal Wiring
Yaskawa recommends using closed-loop crimp terminals on all regenerative unit models. To maintain UL/cUL or CSA
approval, UL Listed or CSA Certified closed-loop crimp terminals are specifically required when wiring the regenerative
unit main circuit terminals on models 2A0035 to 2A0105, 4A0035 to 4A0300. Use only the tools recommended by the
terminal manufacturer for crimping. Refer to
Closed-Loop Crimp Terminal Recommendations on page 212 for
closed-loop crimp terminal recommendations. The wire gauges listed in the following tables are Yaskawa
recommendations. Refer to local codes for proper wire gauge selections.
Note: The mark indicates the terminals for protective ground connection as defined in IEC/EN 60417-5019.
Grounding impedance:
200 V: 100
Ω or less
400 V: 10 Ω or less
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