Hitachi Microscope & Magnifier S-3400N Manual De Usuario
1.2 Installation Requirements
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NOTICE: (a) Line power fluctuation should be slow, and no abrupt fluctuation is allowable.
(b) Allowable line voltage fluctuation is ±10 % max.
(c) This instrument over-voltage category is "CAT.II".
(d) The instrument provides Main ELB of the following type.
(c) This instrument over-voltage category is "CAT.II".
(d) The instrument provides Main ELB of the following type.
Leakage current breaker (CE conforming)
Rated current : 20 A
Trip current : 30 mA
Short-circuit interrupting capacity : 5 kA (Not be connected to supplies capable of
Rated current : 20 A
Trip current : 30 mA
Short-circuit interrupting capacity : 5 kA (Not be connected to supplies capable of
delivering more than 5 kA.)
Conforms to IEC/EN 60947-2
(2)
Notes concerning local preparation step down transformer
• A step-down transformer that meets the relevant standards and regulations of the
• A step-down transformer that meets the relevant standards and regulations of the
country/region of use is required. The Hitachi installation engineer will verify the
suitability of the transformer upon its installation.
suitability of the transformer upon its installation.
• The step-down transformer must be self-protected against secondary overload or short
circuit. Alternatively the MAIN-ELB overcurrent device (specifications listed above) of
the Main Unit may be suitable to protect certain transformers. If relevant the Hitachi
installation engineer will verify the transformer/circuit breaker combination upon
installation.
the Main Unit may be suitable to protect certain transformers. If relevant the Hitachi
installation engineer will verify the transformer/circuit breaker combination upon
installation.
• The step-down transformer (primary & secondary windings and protective earth) is
connected to a terminals of the Main Unit that are sized M5 and suitable only for
prepared (ring lug terminals). Please prepare the relevant cables for the transformer to
the Main Unit. The Hitachi installation engineer will install the transformer and verify all
connections.
prepared (ring lug terminals). Please prepare the relevant cables for the transformer to
the Main Unit. The Hitachi installation engineer will install the transformer and verify all
connections.
• In the area of CE marking, the step-down transformer must be an isolating and double
insulated type in accordance with IEC/EN 61558-1 and IEC/EN 61558-2-4 standard.
(3)
External mains disconnection
Prepare an external mains disconnection device with the required isolation and lock-off/out
characteristics for use in the electrical supply to the Main Unit. This disconnection device
shall be located in close proximity to the equipment and within easy reach of the operator.
It shall be marked as the disconnecting device for the equipment.
Prepare an external mains disconnection device with the required isolation and lock-off/out
characteristics for use in the electrical supply to the Main Unit. This disconnection device
shall be located in close proximity to the equipment and within easy reach of the operator.
It shall be marked as the disconnecting device for the equipment.
(4)
An M5 ring lug terminal is equipped at the end of the input AC cord (ring lug terminal size:
5.3 mm in inside diameter, 9.5 mm in outside diameter), and the length of the input cord is
10 m.
5.3 mm in inside diameter, 9.5 mm in outside diameter), and the length of the input cord is
10 m.
1.2.4 Grounding
Terminal
Connect the instrument to ground based on the standard of your country.
Avoid sharing the ground terminal with other power equipments. Be sure to ground the
instrument independently. The image trouble and the malfunction of the equipment might be
caused when sharing.