Cut Sheet

CSI-2004 (Section 26 22 13) Page 3 of 3 SPS# 19, Rev: 01
2.3 BASIC REQUIREMENTS:
A Single-phase, common core construction. Convection air cooled.
B Insulation Class: 105°C system [130°C][180°C][other]
C Temperature Rise: 55°C [80°C][115°C][other]
D Standard impedance at 60Hz: 4.6% to 8.5% (up to 500VA), 3.6% to 4.6% (501VA to 1500VA)
and 2.5% to 3.6% (1501VA to 5000VA).
E Transformer core construction: high grade, fully processed silicon steel laminations or better.
F Coil conductors: continuous copper windings, with soldered terminations.
G Impregnation: vacuum impregnated polyester resin.
H All units up to 1500VA have encapsulated coils encased in molded covers.
I Transformers up to 1500VA shall terminate in molded terminal block. Terminal block screw must
incorporate standard SEMS captive washer and combination Phillips/slot screw.
J Mounting Plate: standard heavy steel mounting plate or feet welded to core.
K Secondary Fuse Kits: all molded units must be supplied with standard 13/32” x 1 ½”, midget/type
CC fuse clips with necessary voltage links and jumpers to also be supplied.
L Sound level to meet NEMA ST-20.
M cULus listed, [CE Mark]
N Built to NEMA ST-1 and in accordance with all applicable UL, CSA and ANSI/IEEE standards.
OPTIONS:
• 13/32” x 1 ½”, midget/type CC Primary Fuse Kits.
• CE mark approved finger safe primary and secondary terminal covers for fused and non-fused
transformers.
• Lead kits for alternative termination.
2.4 ACCEPTABLE PRODUCT AND MANUFACTURER:
A HPS I
MPERATOR® molded, machine tool rated control transformer by Hammond Power
Solutions Inc. (Canada: 1-888-798-8882 / U.S.: 1-866-705-4684).
B Substitutions are permitted, subject to meeting all requirements of this specification and also
having written approval by engineering 10 days prior to bid closing.
3 EXECUTION
3.1 INSTALLATION
A Verify nameplate data.
B Check for damage and loose connections.
C Mount transformer to comply with all applicable codes.
D Coordinate all work in this section with all work of other sections.
E Prior to energizing transformer, verify primary and secondary voltages.