Model# 456
600V
Low Voltage Potential Transformer
- The primary and secondary terminals are No. 10-32 screws into 3/8″ deep brass inserts and fitted with one lock washer and one flat washer and are contained in a sealable terminal cover.
- The core and coil assembly is encased in a thermoplastic shell and filled with resin.
- These transformers are designed for operation lineto- line. They may also be operated line-to-ground or line-to-neutral, at reduced voltage, (58% of rated volts).
- It is desirable to use a 5.0 amp BBS type fuse in the secondary to protect the transformer.
- With six exceptions these transformers are ANSI C57.13 group 1. Those marked * are group 2.
- IEC Rated models are available.
- Fuse blocks containing type KTK-R (class CC) fuses can be fitted.
- When primary fuses are requested, the ratings will be as given in the table.
- This page contains a circle diagram for the estimation of the errors for other than rated burdens.
- When only one fuse is used, it must be connected into the line side (H1) terminal wiring. This will prevent the presence of voltage at the H1 terminal for a ruptured fuse in the neutral (H2) terminal wiring for line-to-neutral connected transformers.
Overview
Insulation Level(0.6kV) – (10kV BIL Full Wave)
Thermal Rating500 VA at 30°C amb. – 300 VA at 55°C amb.
Weight25 Lbs
Accuracy
Accuracy Class0.3 W, X, M, and 0.6Y
Input
Volts0-69.3V thru 0- 600V
Frequency60Hz
Output
Standard120V
LR89403
E93779
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Detailed Model Specifications
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| Catalog Number | Input Voltage | Output Voltage | Turn Ratio | Accuracy Class | Thermal Rating 60Hz at 30°C Amb. | Thermal Rating 60Hz at 55°C Amb. | Insulation Class | Weight |
|---|---|---|---|---|---|---|---|---|
| 456-069 | 69.3V | 120V | 0.58:1 | 0.6 W, X, M, Y | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-120 | 120V | 120V | 1:1 | 0.6 W, X, M, Y | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-208 | 208V | 120V | 1.73:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-240 | 240V | 120V | 2:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-277 | 277V | 120V | 2.31:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-288 | 288V | 120V | 2.4:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-300 | 300V | 120V | 2.5:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-346 | 346V | 120V | 2.88:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-480 | 480V | 120V | 4:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-600 | 600V | 120V | 5:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-069F | 69.3V | 120V | 0.58:1 | 0.6 W, X, M, Y | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-120F | 120V | 120V | 1:1 | 0.6 W, X, M, Y | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-208F | 208V | 120V | 1.73:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-240F | 240V | 120V | 2:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-277F | 277V | 120V | 2.31:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-288F | 288V | 120V | 2.4:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-300F | 300V | 120V | 2.5:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-346F | 346V | 120V | 2.88:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-480F | 480V | 120V | 4:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-600F | 600V | 120V | 5:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-069FF | 69.3V | 120V | 0.58:1 | 0.6 W, X, M, Y | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-120FF | 120V | 120V | 1:1 | 0.6 W, X, M, Y | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-208FF | 208V | 120V | 1.73:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-240FF | 240V | 120V | 2:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-277FF | 277V | 120V | 2.31:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-288FF | 288V | 120V | 2.4:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-300FF | 300V | 120V | 2.5:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-346FF | 346V | 120V | 2.88:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-480FF | 480V | 120V | 4:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-600FF | 600V | 120V | 5:1 | 0.3 W, X, M | 500 VA | 300 VA | 0.6kV | 25Lbs |
| 456-069 | 69.3V | 120V | 0.58:1 | 0.6 W, X, M, Y | 500 VA | 300 VA | 0.6kV | 25Lbs |
Resources
View engineering resources and whitepapers.