Description
SHZF2/SHZF3 SCR Power Controller
4
Ametek HDR Power Systems
Rev 2
Table 1.2 General Specifications of SHZF2/SHZF3 Models
Input line voltage:
*
120, 240, 400, 480, or 575 Vac,
+10%, -15% , Three-phase
Line frequency: *
50 or 60 Hz
Current rating:
*
As indicated by model number (refer to Table 1.1)
Thermostat contact rating:
120 Vac, 5 A; resistive
Input Signal:
Non-isolated
Isolated
0 to 1.5 V (min); 0 to 10 V (max)
0 to 6 mA (min); 0 to 20 mA (max)
Control methods:
1. Potentiometer, 5 k
Ω
, 1/2 watt (Customer-supplied).
2. Dry contact closure (customer-supplied).
3. Temperature or process controller
**
Control signal input impedance:
Non-isolated input
Isolated input
1500
Ω
500
Ω
Control signal isolation:
From SCRs
2,500 Vac
From ac power input lines
2,500 Vac
From chassis
500 Vac
Power output:
Power output linearity versus
control signals input
+3%
Power SCRs protection:
Current surge
Subcycle I² T semiconductor fuse.
Transient voltage spikes (dv/dt)
Metal Oxide Varistor (MOV) and R-C snubber across each SCR pair; all
SCRs have PIV rating of 1,400 V.
Three-phase voltage
imbalance
5% maximum from leg to leg
SCCR Rating
100kA
Miscellaneous:
Zero-firing timebase
Variable see 6.3
Controls:
ZERO and SPAN potentiometers; 10-turn, screwdriver-adjustable.
Approvals
UL/cUL (E151547), CE
Fan-cooling power (as applicable):
For 90 A through 225 A units
0.30 amperes, 35 VA (50 Hz)
0.28 amperes, 46 VA (60 Hz)
Ambient Temperature range:
Environment
32 ºF to 122 ºF ( 0 ºC to 50 ºC) surrounding air
Pollution degree 2
Overvoltage Category III
Storage
14 ºF to 158 ºF ( -10 ºC to 70 ºC)
Weight per unit
Current Rating
SHZF2
SHZF3
15 through 30 A
60 through 225 A
6 lbs
33 lbs
2.7 kg
15 kg
11 lbs
33 lbs
5 kg
15 kg
Outline and mounting:
See appropriate drawing in Appendix
* Specify with order
** If you will be using temperature/process controller, specify its output; e.g., 4-20 mA, 0-10 Vdc, 2-10 Vdc,
etc. with your order.
NOTE: The SHZF2/SHZF3should be tested or operated with an adequate load since an open output will have
line voltage at the load connections.
Summary of Contents for SHZF2 SCR Series
Page 6: ...Table of Contents SHZF2 SHZF3 SCR Power Controller iv Ametek HDR Power Systems Rev 2...
Page 8: ...Safety Instructions SHZF2 SHZF3 SCR Power Controller 2 Ametek HDR Power Systems Rev 2...
Page 12: ...Options SHZF2 SHZF3 SCR Power Controller 6 Ametek HDR Power Systems Rev 2...
Page 24: ...Operation SHZF2 SHZF3 SCR Power Controller 18 Ametek HDR Power Systems Rev 2...
Page 32: ...Troubleshooting SHZF2 SHZF3 SCR Power Controller 26 Ametek HDR Power Systems Rev 2...
Page 46: ...Appendix SHZF2 SHZF3 SCR Power Controller 40 Ametek HDR Power Systems Rev 2...
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Page 48: ...503 Lakeview Plaza Blvd Ste C Worthington Ohio 43085 USA...
