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Sentry Equipment Corp | Sample Sequencer
6.3.1 Power Connection
The Sample Sequencer contains a universal power supply. The power supply is capable of
accepting an input voltage range of 100-240 VAC and frequency of 50 or 60 Hz. The Sample
Sequencer will automatically operate with power supplied in this range. A power supply lead of 16
2
AWG (1.3 mm
) copper wire is recommended.
It is recommended the Sample Sequencer be connected to an electrical outlet or outlet strip with
surge suppression and filtering. A suitable external over-current protection device such as a fuse
(Class CC, 2A, Time delay) or circuit breaker (C trip curve, 2 A) is recommended for both the hot
(L) and neutral (N) leads. Using this method, the plug will serve as the disconnect device. A 16
o
AWG, 60
C, VW-1, 600V, type SJT cord is recommended for non-detachable connections. For
permanent connections the use of a flexible S0W cable or better must be used. Sizing must be
in accordance to the CEC.
The mains and output terminal are rated within the following condition:
Mains terminals rated up to 300V, 10A, 12-28 AWG, PA insulating material, Inflammability class
V0, Type: Plug, 3 position, and screw connection.
Output terminals rated up to 300V, 8A, 14-30AWG, PA insulating material, Inflammability class V0,
Type: Plug, 6 or 8 position, and screw connection.
For permanently connected installations:
- A switch or circuit breaker shall be included in the building installation.
- It shall be in close proximity to the equipment and within easy reach of the OPERATOR.
- It shall be marked as the disconnecting device for the equipment.
The cord and plug shall comply with the following standards:
Table 2: Power Cord Requirements
Location
United States
Canada
European
Community
If desired, the Sample Sequencer may also be hard wired to instrument-quality power using
appropriate certified conduit, fittings, and wiring. A suitable external over-current protection device,
such as a fuse (Class CC, 2A, Time delay) or circuit breaker (C trip curve, 2 A), and disconnect
device is recommended. The over-current protection and disconnect devices shall be installed on
both the hot (L) and neutral (N) leads. The disconnect device shall be located near the equipment
and marked with appropriate ON(1) OFF(O) markings as specified by local codes. For fixed wiring
methods, the ground conductor shall have green with a yellow stripe as the insulation. During
connection of the power wire the grounding lead must be suitably routed and long enough so that
it is the last conductor to take the strain. Installation should be performed by qualified personal in
accordance with local codes and procedures.
Figure 44 shows the power connections on the board.
44
Cord
ANSI/UL 817
CSA C22.2 No. 21 or
C22.2 No. 49
IEC 60227 or 60245
5
ANSI/UL 498
CSA C22.2 No. 21 and C22.2 No. 42
Appropriate IEC standard
Plug
SPD 5.5.15
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