Specifications

49
Control and Lighting Transformer Unit, continued
Rating kVA
(1)
(1) In NEMA Type 12 applications (non-ventilated 3 kVA and larger transformers), to maximize the transformer’s life, we recommend that the transformer
not be loaded to greater than 50% of its nameplate rating. Number in parentheses indicates approximate derated rating. However, in many
applications, NEMA Type 1 with gasket design (vented and filtered doors) may be sufficient.
Recommended Primary Protection
(Amperes)
Bulletin
2195
Space
Factor
(4)
(4) Adding options may increase the space factor of the unit
Bulletin
2196
Space
Factor
(4)
Bulletin
2196Z
Space
Factor
(4)
Bulletin
2197
Space
Factor
(4)
Bulletin
2197Z
Space
Factor
(4)
380V 400V 415V
SINGLE PHASE—110/115 Volt secondary with one 1-pole circuit breaker
0.5
15
(2)
(2) 30 A fuse clip rating for Bulletin 2196 and 2196Z
15
(2)
15
(2)
1.0 1.0 — 1.0 —
0.75
1
1.5 1.5 1.5
1.6
2.0 2.0 2.0
2
3 (1.5)
1.5 2.5 2.0 2.5 2.0
SINGLE PHASE—110/220 Volt secondary with two 1-pole circuit breakers
Transformer secondary wired and protected for 220V phase-to-phase, 110V phase-to-center tap neutral.
5 (2.5)
20
(2)
——1.5 2.5 2.0 2.5 2.0
7.5 (3.7)
20
(2)
——
10 (5)
30
(2)
——
15 (7.5)
50
(3)
(3) 60 A fuse clip rating for Bulletin 2196
——
2.0 3.0 — 3.0 2.5
SINGLE PHASE—115/230 Volt secondary with two 1-pole circuit breakers
Transformer secondary wired and protected for 230V phase-to-phase, 115V phase-to-center tap neutral.
5 (2.5) —
20
(2)
— 1.5 2.5 2.0 2.5 2.0
7.5 (3.7) —
20
(2)
—
10 (5) — 30 —
SINGLE PHASE— 120/240 Volt secondary with two 1-pole circuit breakers Transformer secondary wired and protected for 240V
phase-to-phase, 120V phase-to-center tap neutral.
5 (2.5) — —
20
(2)
1.5 2.5 2.0 2.5 2.0
7.5 (3.7) — —
20
(2)
10 (5) — — 30
15 (7.5) — —
50
(3)
2.0 3.0 — 3.0 2.5